Добавил:
kiopkiopkiop18@yandex.ru t.me/Prokururor I Вовсе не секретарь, но почту проверяю Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:

Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_3594_Библиотеки_им_академика_М_И_Перельмана

.pdf
Скачиваний:
0
Добавлен:
29.08.2026
Размер:
89 Мб
Скачать
2 • Epidemiology of Vascular Trauma 25
https://t.me/medicina_free
1. MILITARY CONFLICT
Warfare since the 2000s has lost many of the character­istics that dened previous engagements, such as World War I (WWI), World War II (WWII), Korea, and Vietnam. Current conict is a “war among the people,” where “people
in the streets and houses and elds are the battleeld. Military engagements can take place anywhere, with civilians around, against civilians, in defense of civilians. Civilians are the targets, objectives to be won, as much as an opposing force.”3 As such,
vascular trauma inicted by high-energy military ballistic projectiles and purpose-built or improvised blast weaponry can affect two populations-at-risk: combatants and non­combatant (civilians).
Vascular Trauma in Combat Troops
It is important to remember that military combatants repre­sent a specic demographic group. Compared with civilian injuries, military arterial injury occurred predominantly in males in their twenties (25 vs. 32 years and 98.7% vs. 82% males, respectively).4 Furthermore, the predominant mechanisms of injury to US and UK soldiers (Afghanistan) are either improvised explosive devices (48%) or gunshot wounds (29%).5 Contemporary data conrms that exsan­guination is the major cause of death in fatally wounded soldiers.
6–9
It is also estimated that 80% of arterial injuries sustained in combat affect the extremities.10 More than 70% of these are associated with blast injuries.
Vascular injury rates seem only to have increased as war­fare has become more sophisticated: allied surgeons in WWI noted vascular trauma rates of 0.4% to 1.3%11; DeBakey characterized the vascular injury burden in WWII as affect­ing 0.96% of all patients; later, in the Korean and Vietnam wars, the rate of vascular injury was judged to be higher, at 2% to 3%.
12–16
Coalition militaries engaged in combat operations in Afghanistan and Iraq have invested substan­tially in detailed trauma registries in order to capture injury data. Such databases have been used to characterize miscel­laneous injury patterns so that force protection (e.g., body armor or vehicle design) and treatment protocols can be continually updated and aligned to contemporary trauma archetypes. Interestingly, present rates of wartime vascular trauma conrm a much higher prevalence than in previous campaigns, some as high as 7.1%.
17–20
with arterial injury rates being reported by
10
A comparative study of the outcomes of major arterial injuries in military and civilian populations was under­taken by Markov et al.4 One-quarter of all military arterial injuries were not amenable to control by tourniquet appli­cation or compression (noncompressible arterial injuries [NCAIs]). Military arterial injuries were shown to have a lower incidence of NCAIs compared with the civilian pop­ulations (28% vs. 61%). These differences were attributed to a higher rate of blunt trauma to the torso in the civilian setting, as a result of motor vehicle collisions. Blast injuries were the predominant mechanism of injury in military settings (69%), while the civilian population was equally affected by either blunt or penetrating trauma (50% and 50%, respectively). No difference in mortality was found between matched military and civilian cohorts where com­pressible arterial injuries were involved (2% military vs.
4.1% civilian). However, their study suggested that NCAIs
carried a lower mortality in the military setting (4.2% vs.
12.16%). This was potentially attributed to the use of body armor and implementation of combat casualty care strat­egy. This includes advanced military resuscitative strategies and the necessary infrastructures that allow rapid evacua­tion and prehospital care.
A comprehensive study summarizing recent US military experience (13,076 cases) analyzed vascular injuries from the United States Joint Theater Trauma Registry (JTTR) (2002–09).21 It dened battle-related injuries as those suf­ciently severe to prevent return to duty into the combat theater. The specic incidence of vascular injury (“total incidence injury”) was found to be 12%, while the inci­dence of injuries requiring surgery (“operative incidence”) was found to be 9%. The study also identied differences in vascular injury rates between troops deployed to Iraq (12.5%) and Afghanistan (9%). Other differences included causative mechanism, with blast accounting for 74% and 67% of injuries in Iraq and Afghanistan, respectively (with an overall contribution of 73%). There was no difference in the anatomical distribution of the injuries, nor the “died of wounds” (DOW) rate (6.4%) between theaters. Wounds were principally sustained to the extremities (79%), torso (12%), and cervical regions (8%). In the torso, the most commonly injured vessels were the iliac arteries (3.8%), fol­lowed by the aorta (2.9%), the subclavian arteries (2.3%), and the inferior vena cava (IVC) (1.4%). In the neck, 109 carotid injuries accounted for 7% of injuries. It was noted that the vascular injury burden borne by the extremities was remarkably similar to that noted by DeBakey in WWII. In contrast, the higher contemporary rate of cervical and aortic injury was attributed to increased survivability and far-shortened medivac times.
Overall, the authors concluded that the rate of vascular injury in these wars was ve times that previously reported from Vietnam and Korea. The early reported incidence of vascular injury was estimated at around 4.4% to 4.8%, based on data published from US military hospitals in
17,18
Iraq.
However, when this analysis includes nonoperated cases and vascular injury that was unrecognized on recep­tion, the prevalence can be as high as 7%.18 This marked increase in vascular injury rates is striking and not entirely clear. In addition to increased wound survivability, possible reasons include:
1. the very high rate of blast-related injury etiology in these
campaigns,
2. overestimation of the population-at-risk in earlier
reports (thus deating the denominator), or
3. more accurate capture of “minor” nonoperated vascular
wounds (adding to the numerator).
In a similar but smaller British study, Stannard et al. scrutinized the records of 1203 UK servicemen injured through enemy action between 2003 and 2008.20 Unlike the US JTTR, the British JTTR dataset also included patients who were killed in action (KIA)—that is, who died before reaching a medical treatment facility22 (an aspect of injury burden not scrutinized in US accounts). Characterization of injury was made from clinical data and from postmortem examinations conducted by the UK Coroner system. It was determined that 9.1% of this cohort sustained injuries to
26 SECTION 1 Setting the Stage
https://t.me/medicina_free
named vessels. Blast wounds accounted for 54% torsocer­vical injuries and 76% of extremity wounds, respectively. Critically, the study showed that more than half of patients who sustained an injury to a named vessel died before any surgical intervention could be undertaken. Injury to named vessels in the thorax and aorta proved almost universally fatal. Cervical vascular injuries also proved highly lethal, with 13 of 17 patients affected eventually succumbing. Two-thirds of the vascular injuries sustained involved the extremities. Almost half of these patients survived, albeit with eventual amputations in a signicant proportion. The limb salvage (primary assisted patency) rate was 84%. This UK group concluded that while favorable limb-salvage rates are achievable in casualties able to withstand revasculariza­tion, torso vascular injury is not usually amenable to suc­cessful surgical intervention.
The rate of lower limb amputation following vascular injury to the extremities is important, being a major cause of disability and avoidable mortality. Lower limb arterial injuries are thought to be caused predominantly by blast injuries (70%) or gun-shot wounds (30%). The common­est affected vessels in penetrating limb injuries include the supercial femoral artery, the popliteal artery and the pos­terior tibial arteries, each being affected in around 20% of cases.10 Perkins et al. studied 579 injured extremities in US service members from the wars in Iraq and Afghani­stan.23 Their primary amputation rates were 8.5%, with salvage attempts occurring in 91% of patients. Tissue loss and damage control were the principal reasons for primary amputations. Secondary amputations occurred in 15.5% of limbs. Early secondary amputations were associated by nonviable or infected tissue, while late ones with poor limb function. 57% of amputations were transtibial, while 30% were transfemoral. It is also important to note that 82.7% of those undertaking limb salvage were amputation free at 10 years. This highlights the signicant threat that military vascular injuries pose to the lower limbs, but also the value of attempting limb revascularization within adequately prepared trauma infrastructures.
10,23
Vascular Trauma among Local National Populations
Few studies have examined the burden and impact of vas­cular trauma in civilians injured in time of war. The regis­tries of military trauma systems may be biased toward data collection among their own troops, or in such cases where information is captured there is usually no data on long­term outcomes due to lack of follow-up in war-aficted societies. In a study by Clouse et al. analyzing vascular casualties treated at a Level IIIa US facility in Iraq, 30% were civilians while and 24% were local national combat forces.17 Extremity vascular injuries were signicantly more prevalent in US forces compared with the local popula­tion (81% vs. 70%). Vascular injury to the torso was sig­nicantly less common in US forces (4% vs. 13%), but neck injuries occurred with similar prevalence (14% vs. 17%). The authors hypothesized that the lack of protective body armor might increase the nonextremity vessel injury rate in the Iraqi population. Interestingly, vascular injuries were noted to be overrepresented in the local nationals: although
40% of those admitted to the facility were of Iraqi origin, they made up to 51% of the vascular injury cohort.
Deployed military hospitals are primarily congured and resourced for the care of their own nation’s soldiers, so understanding the additional burden presented with a large local national population of injured civilians, insurgents, and military remains important. In a supplementary report from the Air Force Theater Hospital in Balad, Iraq,24 it was determined that the incidence of vascular trauma among 4323 locals treated at the facility was 4.4%. The authors focused on extremity injuries—which affected 70% of vas­cular casualties—and observed that the median length of stay from presentation to denitive wound closure was 11 days. Casualties underwent a median of three operations. Notably, the age range was 4 to 68 years and included 12 pediatric injuries. Mortality was 1.5% with signicant com­plications in 14% but despite this a 95% limb salvage rate was recorded.
This experience matches earlier reports. Sfeir et al.25 described a population of 366 lower limb–wounded vas­cular cases, sustained by a mixed population of combatant and noncombatants during the Lebanese civil war over a 16-year period ending in 1990. Two-thirds of patients had received gunshot wounds. Patients included 118 who had popliteal arterial injuries, 252 with femoral injuries and 16 who had tibial vessel injuries. The overall mortality rate was 2.3% with no mortality in the popliteal and tibial injury group whereas there were nine deaths in the femoral inju­ries group. The overall amputation rate was 6% (11.7% for the popliteal injuries group). Mirroring more contemporary experience, the authors associated failure of limb salvage with physiological instability, delay in repair (of more than 6 hours from injury), and presence of long bone fracture.
2. CIVILIAN VASCULAR INJURY
The overall impact of vascular trauma in civilian society is largely unknown in societies without recourse to large pop­ulation datasets. Even in the United States, which is served by the National Trauma Data Bank (NTDB),b large-scale studies are few. Overall, regional variations in incidence and MOI of vascular trauma occur based on socioeconomic and political challenges faced by the populations studied. Vas­cular trauma in the civilian setting is also seen as a major consumer of hospital resources, longer hospital stay, greater use of critical care resources, as well as higher blood transfusion requirements.28 Rapid access to adequate trauma care facilities is universally considered to be of major importance in achieving good outcomes.
26,27
In 2010, Demetriades et al. attempted to characterize the nature of vascular trauma in 22,089 patients—including children—drawn from a general trauma population of more than 1.8 million case les recorded on the NTDB system.29 Accepting the almost inevitable reporting bias that accompanies analysis of such retrospective data, it was determined that the overall incidence of vascular injury during the study period (2002–06) was 1.6%. Four-fths of the injured were male, and the average age was 34 years.
26–28
being associated with
a
Level III facility is equivalent to a major trauma center (MTC).
b
NTB: a national trauma registry administered by the American College
of Surgeons and receiving data from more than 900 trauma facilities.
2 • Epidemiology of Vascular Trauma 27
https://t.me/medicina_free
It was reported that 51% sustained a penetrating mecha­nism; the top four mechanisms of injury were motor vehi­cle collisions, rearm injuries, stab wounds, and falls from height. Just under one-quarter were shocked on admission, and over half had an Injury Severity Score of more than 15. Abdominal injuries and chest injuries accounted for more than 24.8% and 23.8% of the trauma burden, respectively, with arm and leg injuries accounting for 26.5% and 18.5%. Adult mortality was 23.2%; vessels associated with the highest amputation rates were the axillary artery (upper limb amputation rate of 6.3%) and popliteal artery (lower limb amputation rate of 14.6%).29 This impressive dataset summarized national epidemiological data; but what is of concern to individual trauma and vascular surgeons is the local epidemiology of vascular injury among their patients, because this will determine workload, case mix, and outcome.
Another American cohort of 5858 patients from NTDB (2012) analyzed traumatic abdominal and pelvic vascu­lar injuries. The overall mortality for this group was 25%. Blunt trauma accounted for 57% of injuries, while 40% were caused by penetrating trauma. Those with penetrat­ing injuries were 1.72 more likely to die than those with blunt trauma. Men had a higher incidence of penetrating trauma compared with women (48% vs. 17%). This study highlighted once again the poor outcomes of vascular trun­cal injuries, especially when associated with penetrating trauma.
30
Data from a major UK trauma center suggested that vascular injury occurred in 4.4% of consecutive trauma admissions between 2005 and 2010.28 Vascular injuries in this cohort had a 18% death rate, with the highest mortality being seen in those with blunt injuries to junctional areas. In this UK-specic cohort, stab wounds were the common­est cause of vascular injury, being ve times more com­mon than gun-shot wounds. However, patients with blunt injuries were more severely injured. Arterial injuries repre­sented 87% of the vascular trauma, while 13% were venous in nature. 47% of injuries were central in nature, with 35% affecting the extremities and 20% junctional areas.
Civilian trauma has also been changed by the fact that ter­rorism is now no longer an isolated phenomenon associated with the developing world. An estimated eightfold increase in terrorist attacks was noted between 2000 and 2014.31 Recent attacks, including the Boston Marathon bomb­ing,32 the Paris attacks, attacks,
d,34
have provided an evolving picture of terror-
c,33
as well as the recent UK terrorist
related vascular injuries in civilian populations. Many of these have been associated with a multitude (and often com­bined) mechanism of injuries, including improvised explo­sive devices (IED), stabbing, and motor vehicle-induced injuries. Injury patterns in this population are different from those seen in military circumstances, as civilians lack ballistic-proof equipment and communities may not be pre­pared for these attacks. Different studies of civilian trauma in Israel (2000–2005) showed that vascular trauma was more common in terrorist-related compared with non– terrorist-related scenarios (10% vs. 1%).26 Specically,
c
Paris terror attacks (2015): Charlie Hebdo and Bataclan.
d
UK terror attacks (2017): Manchester Arena bombing, London Bridge
attack, and Westminster Bridge attack.
vascular trauma occurred in 8.6% of explosion casualties and was associated predominantly with penetrating inju­ries.27 Individuals with vascular trauma also had a higher injury severity score and a mortality rate ve times greater than those with nonvascular trauma (22.9% vs. 4.9%, respectively). The lower-extremities and head/neck areas were the most common anatomic regions to suffer vas­cular trauma (37% and 25%, respectively). Data from the Boston Marathon bombing also showed that 66% of patients admitted to hospital had suffered lower extremity injuries, with 22% undergoing amputation.
These studies concluded that vascular trauma is associ-
ated with poorer outcomes in the civilian population
32
26,27
and that the higher incidence of vascular injuries in terror­related scenarios requires integration of a vascular surgeon as part of the trauma team.
Urban Populations
Inner-city populations in countries such as the United States and South Africa experience high rates of interper­sonal violence, often mediated by low-energy handgun or bladed weaponry. South Africa has an intentional homicide rate of 32 per 100,000. In the United States this is 4.8 per 100,000, while in the UK it is considerably less, at 1.7 per 10,000.
35–37
However, there is signicant regional variation in violence rates even within societies where violent injury is common. For instance, in South Africa, Limpopo expe­rienced 762 murders in 2009–10, while Gauteng experi­enced 3444 murders over the same time frame.35 Similarly, the murder rate in non-suburban US cities is approximately twice that of suburban areas.36 Of course, the relationship between urban concentration and population homicide rates is not universal. Australia has an overall murder rate of 1.2 per 100,000, yet the homicide rate in the sparsely populated Northern Territories is 3.96 per 100,000, com­pared with 0.8 in Victoria State.38 The degree to which national and urban murder statistics translate to violent vascular injury is difcult to quantify, but it is unsurpris­ing to note that the majority of classical reports detailing the burden, type, and outcomes from vascular trauma come from urban institutions serving inner-city and poorer populations. As described earlier, population-wide data garnered from the National Trauma Data Bank suggests the contemporary overall prevalence of vascular injury in patients is 1.6%21 whereas that presenting for treatment in urban areas has been quoted as 2.3% in a New York Level I trauma center39 and 3.4% in a Level II center in El Paso, Texas.40 These reports typify the perceived demographic as almost always male and usually young. Mortality is approx­imately twice that of nonvascular patients39 and penetrat­ing trauma is overrepresented in vascular patients, with the El Paso authors recording a 40% penetrating injury mecha­nism in vascular patients against a rate of 10% in the gen­eral trauma population.
The largest US single center study of vascular trauma to date was published in 1988 and emanated from Houston.41 It typies the experience of many large inner-city urban trauma facilities and was undertaken with the aim of deriv­ing epidemiological conclusions that would guide trauma­center and health logisticians. The study encompassed a 30-year period, describing 5760 cardiovascular injuries in 4459 patients. The authors set themselves the task of
28 SECTION 1 Setting the Stage
https://t.me/medicina_free
accounting for the entire vascular injury cohort, rather than restricting themselves to specic vessels, utilizing multiple corroborative documentary sources rather than a single registry. Their study conrmed that the burden of vascular trauma in the city was being borne by young men (86% male, average age 30 years), 90% of whom had been injured by rearms (gunshot wound 51.5%; shot­gun injury 6.8%) or knives (31.1%). The study once again demonstrated that the wound pattern in civilian circum­stances, even where ballistic penetrating injury is the norm, does not follow that seen in wartime. Torso and neck inju­ries accounted for two-thirds of all injuries treated, while lower extremity injuries (including the groin) comprised only a fth. Whereas very few soldiers with injuries to the large vessels of the abdomen are seen by military surgeons, trauma to the abdominal vasculature accounted for 33.7% of the total vascular injury cohort seen in Houston—a fact attributed to the maturation of the city’s Emergency Medi­cal Services. Trends in epidemiological factors—including changes in the local population, changes in local crime patterns (noting the increased burden of trauma that accompanied criminal narcotic activity), and provision of health-care infrastructure—were carefully described. The authors noted a sixfold surge in vascular trauma, with 163 and 1069 injured patients in the rst and last respective 5 years of the study period, although as they did not detail the denominator data (total number of trauma patients treated for each time period), it was not possible to assess for trends in the proportion of patients with vascular trauma. Fur­thermore, trauma scores, physiology, and crude outcome measures such as mortality were not given, thereby limiting characterization of case mix and reducing the utility of this impressive dataset for the purposes of comparison. Despite these drawbacks, this classic study serves as template for other investigators seeking to describe vascular trauma epi­demiology among their communities.
42
South Africa urban centers have reported a number of large series of vascular injuries pertaining to individual ves­sels and bodily regions,43 though overall burdens of impact are less clear. Data from Sydney and Perth in Australia have reported vascular trauma rates of 1% to 1.8% with pen­etrating trauma mechanisms contributing up to 42% of
44,45
cases. size the relative rarity of noniatrogenic vascular trauma in the general and university hospital setting alike
Reports from individual centers in the UK empha-
46–48
; how­ever, the rates of vascular trauma among certain inner-city populations may approach those seen in North American centers. In 2011, a 6-year study in the lead trauma cen­ter for London determined that 256 patients (4.4%) out of 5823 trauma admissions sustained vascular injury.28 Penetrating trauma caused 135 vascular injuries (53%), while the remainder resulted from blunt trauma patients, who were more severely injured (median Injury Sever­ity Score [ISS] 29) compared with those with penetrating trauma (median ISS 11) and had greater mortality rates (26% vs. 10%) and higher limb amputation rates (12% vs. 0%). These differences remained when comparing injuries in each anatomical zone. Blunt vascular trauma patients were twice as likely to require massive blood transfusions (47% vs. 27%) and had a vefold longer hospital stays (median 35 days vs. 7 days) when compared with patients with penetrating vascular trauma. Recent development of
a national trauma registry and trauma systems approach in the UK National Health Service will allow better plotting of the impact of vascular trauma, especially with regard to inner-city “hot spots.”
49
Rural Populations
Large vascular series are dominated by urban centers, but non-urban and rural populations have discrete epide­miological injury profiles and patients who have bespoke requirements, particularly regarding timely access to vascular care. Endeavors by North American research­ers studying trauma systems serving rural populations have shed light on injury patterns in these more isolated settings.
In 1982, Koivunen et al. reviewed 89 Missourians, one­third of whose injuries were farm related, and found that the delay between injury and arrival at the center aver­aged 3.4 hours. Their study also found that 82% of the injuries involved extremities, and 35% of the injuries were ligated, with an overall amputation rate of 16.4% and a mortality rate of 5.6%. The complication rate associated with vascular repair was 12.4%. The authors noted that the majority of complications and all deaths and amputa­tions were in patients suffering trauma from farm, indus­trial, and motor-vehicle accidents.50 In the largest North American series to date, Oller examined 1148 vascu­lar injuries suffered by 978 patients reported from eight trauma centers in a largely rural state. Over the course of the study, vascular trauma accounted for 3.7% of all trauma cases entered on the trauma registry. The amputa­tion rate was 1.3% among those with extremity injuries, which accounted for 47% of the total cohort. The authors reached broadly similar conclusions to the Missouri group with respect to rural vascular injury patients—four-fths of whom were transferred in from peripheral facilities—in that these patients were older, had a higher incidence of blunt trauma, had longer inpatient admissions, and had higher mortality rates (14.2%). They argued that, for opti­mum care, trauma services catering to rural patients with vascular injuries must congure their systems to enable prompt identication, resuscitation, and early transport of vascular injury patients to major trauma centers for denitive care.
51
Lifestyle and Socioeconomic Factors
Obesity. Obesity is an ever-growing problem in developed societies and one associated with poor outcome in polytrauma patients.
52–55
Simmons et al. studied 115 patients with lower­extremity vascular injuries over a 5-year period ending in 2005 and dichotomized the group by a body mass index (BMI) of 31 or more.54 Interestingly, they found that obese patients in general exhibited no difference in amputation rate or mortality, although a BMI of greater than 40 was not associated with a favorable outcome. Ethnicity. A study by Moreira et al.56 identied racial disparities in mortality outcomes after arterial trauma. They suggested that minority populations sustaining vas cu­lar arterial injuries have a higher rate of adjusted mortality compared with Caucasian victims. A different study by Hicks et al. also suggested that older Afro-Caribbean victims (>65 years) of vascular trauma “were nearly ve times more
likely to experience death or amputation after vascular trauma
2 • Epidemiology of Vascular Trauma 29
https://t.me/medicina_free
than their Caucasian counter-parts.57 This may be related to access to adequate trauma facilities, although Moreira’s study suggested that the use of open and endovascular techniques was similar across the different groups studies. Poverty. In North America, poverty is increasingly recognized as a determinant of outcomes from trauma.
58–60
It is unclear to what extent these factors are intrinsic drivers of outcome and to what extent they represent summary descriptors of multiple competing and compounding subfactors. In order to answer this, Crandall sought a more homogeneous trauma grouping and thus examined the fate of patients with lower-extremity vascular injury to investigate the impact of race and insurance status.61 Using a large NTDB population of 4928 patients, the authors found that those who were of Latino, African American, Asian American, or Native American origin had a signicantly higher odds ratio of death (1.45), as did the uninsured cohort (1.62). The African American and Latino cohorts made up 51.1% and 19%, respectively, of penetrating vascular patients, but these groups only contributed 12.1% and 10.5% to the blunt-injury cohort. When the outcomes were stratied by mechanism of injury, no difference was found with respect to mortality in bluntly injured patients, whatever their insurance status or race. Penetrating trauma patients who were uninsured had signicantly worse mortality, but race only trended toward statistical signicance in the prediction models studied.
3. TRAUMA AT THE EXTREMES OF AGE
Pediatric Trauma
Pediatric vascular trauma is a rare phenomenon, account­ing for less than 2% of pediatric hospital admissions.62 Nev­ertheless, it has a large potential for long-term functional consequences. Therapy in this patient group, whether surgical or conservative, requires the surgeon to take into account the developmental needs of the child. Interest­ingly, the majority of vascular arterial injuries in this group appear to be treated by vascular rather than pediatric sur­geons. This highlights potential clinical and training chal­lenges as non–pediatric-trained vascular surgeons have to adapt adult techniques to children in the absence of subspe­cialist training, national guidelines, or long-term outcomes
63,64
data.
Specic challenges are posed by children receiving care in war zones, where sophisticated armed conict occurs in the proximity of civilian populations. Over 4000 children were treated in US Military Hospitals in Iraq and Afghani­stan between 2002 and 2011,64 of which 3.5% had a vas­cular injury. The majority of these were boys (79%) who had suffered penetrating trauma (95.6%), predominantly to the limbs (38% upper and 28% lower limbs) or the torso (25.4%). Blast injuries (58%) and gunshot wounds (37%) were the predominant mechanism of injury. For­tunately, limb salvage rates were 95%. Nevertheless, the consequences of these injuries need careful consideration, as almost 1 in 10 children died. Of the children that died the majority (71.4%) had sustained vascular injuries to the chest, abdomen, or pelvis. These included trauma to the major abdominal vessels or injuries to the hepatic and mes­enteric arteries leading to nonsurvivable visceral ischemia.
This offers a unique perspective of the outcome differences in pediatric vascular injuries in the context of armed con­ict, where the pediatric vascular injury rate is almost six times higher than in the civilian setting (3.5% vs. 0.6%).
In the civilian population, vascular injury rates are simi­larly low in children atric trauma.62 The predominant mechanism of vascular injury in children is penetrating trauma.
65–70
accounting for 0.6%–1% of pedi-
69,70
In the United
29,64
States, this is associated with rearm trauma and motor vehicle collisions (MVC) (36.9% and 34%, respectively).62 Upper limb trauma was most frequent anatomic site of vas­cular injury (35%). Mortality in this patient group was asso­ciated with shock at presentation and penetrating injuries.
In a 12-year-long study by Klinker et al.,70 1.1% of all trauma admissions in patients younger than 18 years were associated with vascular injury. The prevalence of vascu­lar trauma with blunt injury was 0.4%, whereas that with penetrating trauma was 4.5%. Notably, there were as many wounds caused by glass injury as there were by gunshots. The burden of extremity vascular trauma resulted in a 10% overall amputation rate, most of whom had mangled extremi­ties secondary to train or lawnmower accidents. Mortality reached almost 10% (frequently associated with head injury), but unlike pediatric vascular injury in armed conict, there was a virtual absence of thoracic aortic injury in this cohort.
70
Barmparas et al. analyzed pediatric vascular injury among 251,787 US National Trauma Data Bank patients 15 years of age or younger29 and compared them with an adult vascular trauma patient cohort. The prevalence of pediatric vascular injury was noted to be 0.6% against an overall rate of 1.6%. Pediatric patients had lower ISS scores with a high, but less frequent, incidence of penetrat­ing injury (41.8% vs. 51.2%). There were clear differences in injury patterns. In contrast to adults, pediatric patients exhibited signicantly more blunt and penetrating upper extremity vascular injuries but sustained less penetrat­ing chest and abdominal vascular injuries. The upper arm bore the brunt of pediatric vascular injury; brachial ves­sel trauma occurred in 13.2%, with forearm vessel injury in 22%. The incidence of blunt thoracic aortic injury was much lower in children, involving 8.9% of all blunt pediat­ric vascular trauma cases versus 26.1% in bluntly injured adults, with a linear relationship between age and inci­dence of aortic injury. Mortality was signicantly lower in the pediatric cohort when compared with adults (13.2% vs. 23.2%)—a difference that persisted even after correct­ing for compounding differences such as ISS, low GCS, and mechanism. There was no difference in the frequency of lower-extremity amputation between adult and pediatric patients (9.1% in children vs. 7.5% in adults). The authors drew attention to the fact that, despite the survival advan­tage observed in pediatric patients, the rate of penetrating injury was sobering and a fth of children who had been shot died from their injuries.
In summary, the incidence of pediatric vascular injury is thankfully low. Nevertheless, this represents a high-risk area of surgical practice, where vascular surgeons may encounter unfamiliar clinical circumstances.
Geriatric Trauma
There have been fewer studies of the epidemiology of vas­cular injury in geriatric patients. Patients over the age of 65
30 SECTION 1 Setting the Stage
https://t.me/medicina_free
represent a relatively small proportion (7.6%) of all individ­uals suffering traumatic vascular injury. The mechanism of injury in this population is predominantly blunt trauma, sustained in the majority of cases by MVCs and falls (59.2% and 14.0%, respectively, compared with 23.6% and 3.6% in individuals <65 years of age).71 Despite the relatively rare occurrence of vascular injury, these individuals do pose signicant clinical challenges due to the associated burden of occlusive vascular disease, stiffer vasculature, less resil­ient physiology, and concurrent polypharmacy. Addition­ally, geriatric patients display higher ISS scores compared with the nongeriatric adult population sustaining vascular trauma. Cumulatively, these factors are reected in a mor­tality rate that is four times higher in the geriatric vascular trauma patient compared with the adult one. Anatomically, vascular injury in patients over 65 predominantly affected the thoracic vasculature (40%) with 33% displaying dam­age to the thoracic aorta. Other differences in injury pattern included higher rates of penetrating neck and arm injury and more blunt chest and abdominal vascular injuries. The authors described a linear increase in thoracic aortic injuries with increasing age and a corresponding decrease in inju­ries to the forearm vessels and femoropopliteal axis. Inter­estingly, no signicant difference in amputation rates was described between older (2.5%) and younger (3.0%) patient cohorts in terms of overall, upper limb, or lower limb injury patterns. The younger patient cohort was signicantly more likely to undergo fasciotomy (9.6% vs. 2.8%), although the authors were unable to account for this. Overall mortality was signicantly higher in the older cohort when compared with younger adults (43.5% vs. 21.6%). Being over 64 years was associated with an odds ratio of death of 3.9 after adjusting for sex, ISS, low GCS, presence of shock, mecha­nism of injury, and body region of injury. Unsurprisingly, older patients had longer intensive care unit stays, although overall inpatient length of stay of 10.2 days did not differ signicantly compared with the younger cohort.
4. IATROGENIC VASCULAR INJURY
Vascular surgeons are increasingly encountering vessel trauma resulting from inadvertent iatrogenic misadven­ture during open surgery or endovascular intervention. This may represent the chief cause of vascular trauma in peaceful countries where percutaneous cardiac, neurologi­cal, and endovascular therapies are practiced. One Euro­pean review of the burden of iatrogenic vascular trauma estimated incidence of 35% to 42%.72 However, even in developing countries, this may account for a signicant proportion of the vascular injury workload.73 The advent of coronary angiography and angioplasty has created a new niche of traumatic vascular injuries, mainly related to bleeding and pseudoaneurysm formation in the iliofemoral segment. Traditional injury patterns resulting from high femoral punctures led to noncompressible bleeding from the external iliac artery in the pre-peritoneal and retroperi­toneal spaces. Low-puncture sites are similarly associated with arteriovenous stula formation.74 With the advent of micropuncture access and a shift to radial approaches to the coronary vessels, a new generation of iatrogenic iliac injuries have arisen. These are associated with large bore access for endovascular reconstructive procedures, such as
endovascular aneurysm repair (EVAR), thoracic endovas­cular aneurysm repair (TEVAR), and transcatheter aortic valve replacement (TAVI). Newer iatrogenic injuries are also associated with failed percutaneous closure devices and heavy-duty cannulation for ECMO. Future challenges confronting the trauma vascular surgeon may also result from the rapid insertion of REBOA catheters.
Arterial complications associated with retrograde cath­eterization of the common femoral artery carry a major complication rate under 1%.
74,75
Minor complication (e.g.,
puncture site hematoma) have been reported in up to
12.5% of patients,76 although the majority of studies report these in less than 10% of cases.77 Variation in this com­plications rate depends on whether vascular catheteriza­tion is diagnostic in nature or followed by an intervention using a large bore device (10-fold difference in complication rate).78 Irrespective of incidence, femoral and external iliac injuries carry nontrivial morbidities, leading to increased hospital stay (2.7 vs. 4.5 days)79 and increased blood trans­fusion requirement (39%). Furthermore, one study sug­gested that retroperitoneal bleeding from femoral arterial punctures is associated with a 6.6% rate of mortality.80 In addition, major femoral bleeding in the context of percuta­neous coronary intervention has been associated with an increased 30-day mortality, as well as a decreased long-term survival.
79
Overall, the incidence of femoral arterial puncture site bleeding is thought to have reduced over time. A large series reports a reduction from 8.4% to 3.5% over a 10-year period.79 This may be associated with a large number of factors, including color Doppler ultrasound–guided access, transition to a radial approach in coronary catheterization, and the replacement of post-procedural manual compres­sion with vascular closure devices (VCD). Nevertheless, as coronary intervention is increasingly performed thr­ough the radial approach, a degree of deskilling should be expected when radial operators attempt unavoidable femo­ral access. This may lead to a future rise in the prevalence of groin complication. In the context of transfemoral cath­eterization for coronary interventions, risk factors for com­plications include female gender, the presence of peripheral arterial disease, and left-sided punctures.
75
Less common complications of femoral arterial access include pseudoaneurysms (0.1%–0.2% for diagnostic pro­cedures; 3.5%–5.5% for interventional procedures),81 AV stula formation (<1%),82 and arterial dissections (0.2%).75 Vascular rupture is usually associated with angioplasty and stenting in the context of balloon overination, device oversizing, and intrinsic arterial pathology, such as arteri­tis or inltrating calcied plaque.74 Although rare (0.1%), this can have catastrophic consequences, especially when occurring in the aortoiliac segment.
In Sweden, where repairs for vascular trauma constitute
1.3% of all emergency and elective vascular workloads, a review of national vascular registry data revealed that iat­rogenic etiology accounted for 48% of all vascular injuries, with penetrating trauma and blunt trauma accounting for 29% and 23%, respectively.83 The most commonly injured vessel was the right femoral artery, in keeping with compli­cations from endovascular interventions. As expected the iatrogenic group was older, with a median age of 68 and had a higher incidence of comorbid conditions such as cardiac
2 • Epidemiology of Vascular Trauma 31
https://t.me/medicina_free
disease (58%) and renal dysfunction (18%) than patients injured by noniatrogenic etiologies. Mortality was approxi­mately double that of noniatrogenic patients (4.9% vs.
2.5%). The authors noted that iatrogenic vascular trauma had increased over the 1993–2004 study period by 150% and attributed this to the increased uptake of endovascular procedures. Two small but recent studies from both provin­cial and tertiary referral vascular centers in England, where 71% to 73% of all vascular injuries were found to be iatro­genic in nature,
48,84
echoed these results. Both studies found worse outcomes in the iatrogenic group compared with the noniatrogenic cohorts, with patients undergoing noncar­diac or peripheral vascular interventions faring the worst following their iatrogenic injury.
Vascular trauma following ECMO is often associated with the large 16 to 20 Fr cannulas used for accessing the com­mon femoral artery. These increase the risk of thromboem­bolic events, especially in women and those with peripheral arterial disease. The rate of ECMO-related lower limb isch­emia is thus reported as being anything between 10% and 70%85, while local complications (dissections, pseudoan­eurysms, or retroperitoneal bleeds) occur in 7% to 14% of patients.86 While the risk-benet balance of this interven­tion is justiable, vascular surgeons should be aware of this new cohort of patients requiring adaptation of their vascu­lar trauma skills.
Vascular closure devices have provided advances in reduc­ing time to hemostasis and facilitating early ambulation after percutaneous arterial puncture.87 Although generally considered to be safe, VCDs have nevertheless created addi­tional opportunities for arterial damage if improperly used. In a combined cohort of coronary and peripheral interven­tions, VCDs were shown to have a complication rate of 3.9% (2.2% major and 1.7% minor complications) and a device failure rate of 7.8%.88 These are not infrequent errors which can lead to bleeding, as well as femoral artery occlusion. Differences in vessel-closure technologies between various devices, operator experience, re-do interventions and ath­eromatous vessels walls all play a role in arterial damage following VCD use. It is important to note however that a Cochrane review found no differences in vascular injuries between VCD use and manual compression.87 Furthermore, the complication prole of VCDs is superior to the traditional alternative of manual compression alone.
78
Venous iatrogenic injury is most commonly encountered in the placement of central venous catheters (CVC). It is esti­mated that 5 million CVCs are inserted annually.89 Consid­ering that 2% of CVC suffer from misplacement (even with ultrasound guidance) these result in a signicant number of venous injuries.
90–92
Furthermore, CVCs are seen as train­ing procedures, consequently being placed by practitioners with a various degree of experience. While the majority of CVC-associated venous injuries are related to puncture site hematomas, insertion of lines in the internal jugular and subclavian veins can be associated with inadvertent punc­ture of adjacent major arteries or mediastinal structures, leading to potentially noncompressible arterial hemorrhage.
Inferior vena cava lters are a second major area of venous injuries, with complications occurring during insertion and retrieval, as well as during use (IVC penetra­tion). Access site bleeding has been reported in 6% to 15% of patients.93 Caval perforation is a second lter-associated
complication, made worse by concomitant anticoagulation or damage to other organs in the pericaval space, such as the duodenum.94 Prompt removal of IVC lters remains therefore the wisest strategy for vascular surgeon wishing to avoid caval trauma.
Venous angioplasty poses a nal category of venous injury. This is often related to the treatment of central venous or upper limb venous stenosis. Post-procedural bleeding due to vein rupture is reported as occurring in 2% to 6% of cases, with the highest morbidity associated with intrathoracic venous rupture that cannot be externally compressed.
95,96
In summary, the broad advances in endovascular tech­nology, often deployed by nonvascular or training physi­cians, can create a multitude of vascular injuries which can result in noncompressible hematomas, formation of AV stulae, and pseudoaneurysms, as well as vessel rupture. While the incidence of these injuries is thankfully low, their occurrence has a veritable traumatic etiology with all its associated catastrophic outcomes. This makes endovascu­lar iatrogenic injury a worthy target of the skills specic to the vascular trauma surgeon.
Summary
Vascular injury remains a costly consequence of contem­porary trauma burden—both in human and material met­rics. Current trauma epidemiology conrms that this injury type remains a global blight. The contribution of vascular injury to mortality and morbidity is relatively well under­stood within discrete populations, such as the coalition forces ghting in Afghanistan and Iraq (12%). Incidentally, this represents a much higher rate than that encountered in historical armed conicts, such as Korea and Vietnam. However, granularity of data for the same injury types in the civilian populations is much lower due to a lack of sys­tematic data collection and analysis.
It is important to note that the incidence and prevalence of vascular trauma is not well investigated worldwide. Available data suggests that the prevalence of vascular trauma is lower in civilian trauma cohorts, who exhibit dif­ferent patterns of injuries from military populations. Iatro­genic trauma is an evolving niche for the vascular surgeon, which remains in a dynamic state as a result of technologi­cal innovation and novel applications of endovascular tech­niques. Pediatric and geriatric vascular trauma pose further population-specic challenges to the trauma-vascular sur­geon. Vascular surgical care is particularly challenging in children that have been the victims of armed conict. Con­sequently, if vascular injury is to be managed in a holistic manner, robust trauma systems and systematic collection of metadata is needed in order to obtain accurate epide­miological knowledge. More importantly, if this data is to be analyzed in a context-adjusted manner, an understand­ing of social, political and economic circumstances is man­datory. These will ultimately inform resource utilization, system design and trauma prevention strategies that will impact favorably on patient outcomes.
References
1. Merrill RM. Introduction to Epidemiology. 5th ed. London: Jones and
Bartlett Publishers; 2010.
32 SECTION 1 Setting the Stage
https://t.me/medicina_free
2. Caps MT. The epidemiology of vascular trauma. Semin Vasc Surg.
1998;11:227–231.
3. Smith General Sir Rupert. The utility of Force, London, 2005, Allen Lane.
4. Markov NP, DuBose JJ, Scott D. Anatomic distribution and mortality
of arterial injury in the wars in Afghanistan and Iraq with compari­son to a civilian benchmark. J Vasc Surg. 2012;56(3):728–736.
5. Tubb CC, Oh JS, Do NV, etal. Trauma care at a multinational United
Kingdom-Led Role 3 Combat Hospital: resuscitation outcomes from a multidisciplinary approach. Mil Med. 2014;179(11):1258.
6. Holcomb JB, McMullin NR, Pearse L, et al. Causes of death in U.S.
Special Operations forces in the global war on terrorism 2001–2004. Ann Surg. 2007;245:986–991.
7. Champion HR, Bellamy RF, Roberts CP, et al. A prole of combat
injury. J Trauma. 2003;54:S13–S19.
8. Kelly JF, Ritenour AE, McLaughlin DF, etal. Injury severity and causes
of death from Operation Iraqi Freedom and Operation Enduring Free­dom: 2003–2004 versus 2006. J Trauma. 2008;64:S21–S26.
9. Bellamy RF. The cause of death in conventional land warfare: implica-
tions for combat casualty care research. Mil Med. 1984;149:55–62.
10. Sharrock AE, Tai N, Perkins Z, etal. Management and outcome of 597
wartime penetrating lower extremity arterial injuries from an inter­national military cohort. J Vasc Surg. 2019;70(1):224–232.
11. Bowlby A, Wallace C. The development of British surgery at the front.
Brit Med J. 1917;1:705–721.
12. DeBakey ME, Simeone FA. Battle injuries of the arteries in World War
II: an analysis of 2471 cases. Ann Surg. 1946;123:534–579.
13. Hughes CW. The primary repair of wounds of major arteries: an anal-
ysis of experience in Korea in 1953. Ann Surg. 1955;141:297–303.
14. Hughes CW. Arterial repair during the Korean War. Ann Surg.
1958;147:555–561.
15. Rich NM, Hughes CW. Vietnam vascular registry: a preliminary
report. Surgery. 1969;65:218–226.
16. Rich NM, Baugh JH, Hughes CW. Acute arterial injuries in Vietnam:
1,000 cases. J Trauma. 1970;10:359–369.
17. Clouse WD, Rasmussen TE, Peck MA, etal. In-theater management of
vascular injury: 2 years of the Balad vascular registry. J Am Coll Surg. 2007;204(4):625–632.
18. Sohn VY, Arthurs ZM, Herbert GS, et al. Demographics, treatment,
and early outcomes in penetrating vascular combat trauma. Arch Surg. 2008;143:783–787.
19. Fox CJ, Gillespie DL, O’Donnell SD, etal. Contemporary management
of wartime vascular trauma. J Vasc Surg. 2005;41:638–644.
20. Stannard A, Brown K, Benson C, etal. Outcome after vascular trauma
in a deployed military trauma system. Br J Surg. 2011;98:228–234.
21. White JM, Stannard A, Burkhardt GE, etal. The epidemiology of
vascular injury in the Wars in Iraq and Afghanistan. Ann Surg. 2011;253:1184–1189.
22. AAP-6, NATO Glossary of terms and denitions 2010. North Atlantic Treaty Organisation NATO Standardisation Agency, 2010.
23. Perkins ZB, Yet B, Glasgow S, etal. Long-term, patient-centered out-
comes of lower-extremity vascular trauma. J Trauma Acute Care Surg. 2018;85(1S Suppl 2):S104–S111.
24. Peck M, Clouse D, Cox M, etal. The complete management of extrem-
ity vascular injury in a local population: a wartime report from the 332nd Expeditionary Medical Group/Air Force Theater Hospital, Balad Air Base. J Vasc Surg. 2007;45:1197–1205.
25. Sfeir RE, Khoury GS, Kenaan MK. Vascular trauma to the lower extrem-
ity: the Lebanese war experience. Cardiovasc Surg. 1995;3(6):653–657.
26. Heldenberg E, Givon A, Simon D, etal. Civilian casualties of terror-
related explosions: The impact of vascular trauma on treatment and prognosis. J Trauma Acute Care Surg. 2016;81(3):435–440.
27. Heldenberg E, Givon A, Simon D, etal. Terror attacks increase the risk
of vascular injuries. Front Public Health. 2014;30(2):47.
28. Perkins ZB, De’Ath HD, Aylwin C, etal. Epidemiology and outcome of
vascular trauma at a British Major Trauma Centre. Eur J Vasc Endovasc Surg. 2012;44(2):203–209.
29. Barmparas G, Inaba K, Talving P, et al. Pediatric vs adult vascu-
lar trauma: a National Trauma Databank review. J Pediatr Surg. 2010;45:1404–1412.
30. Talbot E, Evans S, Hellenthal N, et al. Abdominal and pelvic vas-
cular injury: a National Trauma Data Bank study. Am Surg. 2019;85(3):292–293.
31. Sharrock AE, Remick KN, Midwinter MJ. Combat vascular injury:
inuence of mechanism of injury on outcome. Injury. 2019;50(1): 125–130.
32. Gates JD, Arabian S, Biddinger P, et al. The initial response to the
Boston marathon bombing: lessons learned to prepare for the next disaster. Ann Surg. 2014;260(6):960–966.
33. Lesaffre X, Tourtier JP, Violin Y, et al. Remote damage control during the attacks on Paris: lessons learned by the Paris Fire Brigade and evo­lutions in the rescue system. 2017;82(6S suppl 1):S107–S113.
34. Gulland A. It wasn’t a medical miracle – we made our own luck: les-
sons from London and Manchester terror attacks. BMJ. 2017;19:358.
35. http://www.saps.gov.za/statistics/reports/crimestats/2011/categories/
murder.pdf. Accessed November 2011.
36. http://www.fbi.gov/about-us/cjis/ucr/crime-in-the-u.s/2010/crime-
in-the-u.s.-2010/tables/10tbl01.xls. Accessed December 2011.
37. http://www.unodc.org/unodc/en/data-and-analysis/homicide.html. Accessed November 2011.
38. Recorded crime victims. 4510.0. Australian Bureau of statistics
2009.
39. Loh S, Rockman C, Chung C, etal. Existing trauma and critical care
scoring systems underestimate mortality among vascular trauma patients. J Vasc Surg. 2011;53:359–366.
40. Galindo RM, Workman CR. Vascular trauma at a military level II
trauma center. Curr Surg. 2000;57:615–618.
41. Mattox K, Feliciano DV, Burch J, etal. Five thousand seven hundred
sixty cardiovascular injuries in 4459 patients: epidemiologic evolu­tion 1958 to 1987. Ann Surg. 1989;209:698–705.
42. Bongard F, Dubrow T, Klein S. Vascular injuries in the urban battle-
ground: experience at a metropolitan trauma center. Ann Vasc Surg. 1990;4:415–418.
43. Bowley D, Degiannis E, Goosen J, et al. Penetrating trauma in
Johannesburg, South Africa. Surg Clin N Am. 2002;82:221–235.
44. Gupta R, Rao S, Sieunarine K. An epidemiological view of vascular
trauma in Western Australia. Aust NZ J Surg. 2001;71:461–466.
45. Sugrue M, Caldwell E, D’Amours S, etal. Vascular injury in Australia.
Surg Clin N Am. 2002;82:211–219.
46. Golledge J, Scriven MW, Fligelstone LJ, etal. Vascular trauma in civil-
ian practice. Ann R Coll Surg Engl. 1995;77:417–420.
47. Magee TR, Collin J, Hands LJ, etal. A ten year audit of surgery for vas-
cular trauma in a British teaching hospital. Eur J Vasc Endovasc Surg. 1996;12:424–427.
48. De’Ath HD, Galland RB. Iatrogenic and non-iatrogenic vascular
trauma in a district general hospital: a 21-year review. World J Surg. 2010;34(10):2363–2367.
49. Stannard A, Brohi K, Tai N. Vascular injury in the United Kingdom.
Perspect Vasc Surg Endovasc Ther. 2011;23:27–33.
50. Koivunen D, Nichols WK, Silver D. Vascular trauma in a rural popula-
tion. Surgery. 1982;91:723–727.
51. Oller D, Rutledge R, Thomas C, et al. Vascular injuries in a rural
state: a review of 978 patients from a state trauma registry. J Trauma. 1992;32:740–746.
52. Byrnes MC, McDaniel MD, Moore MB, etal. The effect of obesity on
outcomes among injured patients. J Trauma. 2005;58:232–237.
53. Hoffmann A, Lefering R, Gruber-Rathmann M, et al. The impact of BMI on polytrauma outcome. Injury. 2011. https://doi.org/10.1016/j.
injury.2011.05.029.
54. Simmons JD, Duchesne JC, Ahmed N, et al. The weight of obesity in patients with lower extremity vascular injuries. Injury. 2010. https://
doi.org/10.1016/j.injury.2010.04.025.
55. Brown CV, Neville AL, Rhee P, etal. The impact of obesity on the out-
comes of 1153 critically injured blunt trauma patients. J Trauma. 2005;59:1041–1052.
56. Moreira CC, Farber A, Rybin D, etal. Racial differences in treatment
approaches and mortality following arterial trauma. Vasc Endovascu- lar Surg. 2015;49(7):180–187.
57. Hicks CW, Canner JK, Zarkowsky DS. Racial disparities after vascular
trauma are age-dependent. J Vasc Surg. 2016;64(2):418–424.
58. Rosen H, Saleh F, Lipsitz S, etal. Downwardly mobile: the accidental
cost of being uninsured. Arch Surg. 2009;144:1006–1011.
59. Dozier KC, Miranda Jr MA, Kwan RO, et al. Insurance coverage is
associated with mortality after gunshot trauma. J Am Coll Surg. 2010;210:280–285.
60. Maybury RS, Bolorunduro OB, Villegas C, etal. Pedestrians struck by
motor vehicles further worsen race- and insurance-based disparities in trauma outcomes: the case for inner-city pedestrian injury preven­tion programs. Surgery. 2010;148:202–208.
61. Crandall M, Sharp D, Brasel K, et al. Lower extremity vascular inju-
ries: increased mortality for minorities and the uninsured? Surgery. 2011;150:656–664.
2 • Epidemiology of Vascular Trauma 33
https://t.me/medicina_free
62. Eslami MH, Saadeddin ZM, Rybin DV, etal. Trends and outcomes of
pediatric vascular injuries in the United States: an analysis of the National Trauma Data Bank. Ann Vasc Surg. 2019;56:52–61.
63. Bonasso PC, Gurien LA, Smith SD, et al. Pediatric vascular trauma
practice patterns and resource availability: a survey of American College of Surgeon-designated pediatric trauma centers. J Trauma Acute Care Surg. 2018;84(5):758–761.
64. Villamaria CY, Morrison JJ, Fitzpatrick CM, et al. Wartime vascular
injuries in the pediatric population of Iraq and Afghanistan: 2002-
2011. J Pediatr Surg. 2014;49(3):428–432.
65. Whitehouse WM, Coran AG, Stanley JC, et al. Pediatric vascular
trauma: manifestations, management, and sequelae of extremity arterial injury in patients undergoing surgical treatment. Arch Surg. 1976;111:1269–1275.
66. Meagher Jr DP, Defore WW, Mattox KL. Vascular trauma in infants
and children. J Trauma. 1979;19:532–536.
67. Myers SI, Reed MK, Black CT, etal. Noniatrogenic pediatric vascular
trauma. J Vasc Surg. 1989;10:258–265.
68. De Virgilio C, Mercado PD. Noniatrogenic pediatric vascular trauma: a
ten-year experience at a level I trauma center. Am Surg. 1997;63:781–
784.
69. Linda M, Harris MD. Hordines John. major vascular injuries in the
pediatric population. Ann Vast Surg. 2003;17:266–269.
70. Klinkner DB, Arca MJ, Lewis BD, et al. Pediatric vascular inju-
ries: patterns of injury, morbidity, and mortality. J Pediatr Surg. 2007;42(1):178–182. discussion 182–3.
71. Konstantinidis A, Inaba K, Dubose J, et al. Vascular trauma in
geriatric patients: a national trauma databank review. J Trauma. 2011;71(4):909–916.
72. Fingerhut A, Leppaniemi AK, Androulakis G, etal. The European
experience with vascular injuries. Surg Clin North Am. 2002;82: 175–188.
73. Igun GO, Nwadiaro HC, Sule AZ, Ramyil VM, Dakum NK. Surgical
experience with management of vascular injuries. West Afr J Med. 2001;20:102–106.
74. Ge BH, Copelan A, Scola D, et al. Iatrogenic percutaneous vascular
injuries: clinical presentation, imaging, and management. Semin Intervent Radiol. 2015;32(2):108–122.
75. Dencker D, Pedersen F, Engstrøm T, etal. Major femoral vascular access
complications after coronary diagnostic and interventional proce­dures: a Danish register study. Int J Cardiol. 2016;202:604–608.
76. Rae IM, Uddin MM, Ossei-Gerning N, et al. Patients undergo-
ing PCI from the femoral route by default radial operators are at high risk of vascular access-site complications. EuroIntervention. 2014;9(10):1189–1194.
77. Dariushnia SR, Gill AE, Martin LG. Quality improvement guidelines
for diagnostic arteriography. J Vasc Interv Radiol. 2014;25(12):1873–
1881.
78. Arora N, Matheny ME, Sepke C, et al. A propensity analysis of
the risk of vascular complications after cardiac catheterization procedures with the use of vascular closure devices. Am Heart J. 2007;153(4):606–611.
79. Doyle BJ, Ting HH, Bell MR, etal. Major femoral bleeding complica-
tions after percutaneous coronary intervention: incidence, predic­tors, and impact on long-term survival among 17,901 patients
treated at the Mayo Clinic from 1994 to 2005. JACC Cardiovasc Interv. 2008;1(2):202–209.
80. Bhatty S, Cooke R, Shetty R. Femoral vascular access-site complica-
tions in the cardiac catheterization laboratory: diagnosis and man­agement. Interv. Cardiol. 2011;3(4):503–514.
81. Hirsch AT, Haskal ZJ, Hertzer NR. ACC/AHA 2005 Practice Guide-
lines for the management of patients with peripheral arterial disease (lower extremity, renal, mesenteric, and abdominal aortic). Circula- tion. 2006;113(11):e463–e654.
82. Kelm M, Perings SM, Jax T. Incidence and clinical outcome of iatro-
genic femoral arteriovenous stulas: implications for risk stratica­tion and treatment. J Am Coll Cardiol. 2002;40(2):291–297.
83. Rudström H, Bergqvist D, Ogren M, etal. Iatrogenic vascular injuries
in Sweden. A nationwide study 1987–2005. Eur J Vasc Endovasc Surg. 2008;35:131–138.
84. Bains SK, Vlachou PA, Rayt HS, etal. An observational cohort study
of the management and outcomes of vascular trauma. Surgeon. 2009;7(6):332–335.
85. Pillai AK, Bhatti Z, Bosserman AJ, et al. Management of vascular
complications of extra-corporeal membrane oxygenation. Cardiovasc Diagn Ther. 2018;8(3):372–377.
86. Roussel A, Al-Attar N, Alkhoder S, et al. Outcomes of percutane-
ous femoral cannulation for venoarterial extracorporeal membrane oxygenation support. Eur Heart J Acute Cardiovasc Care. 2012;1(2): 111–114.
87. Robertson L, Andras A, Colgan F, etal. Vascular closure devices for
femoral arterial puncture site haemostasis. Cochrane Database Syst Rev. 2016;7:3.
88. Klein-Wiele O, Baliota M, Kara K, etal. Safety and efcacy of clip-based
vs. suture mediated vascular closure for femoral access hemostasis: a prospective randomized single center study comparing the Star­Close and the ProGlide device. Catheter Cardiovasc Interv. 2018;91(3): 402–407.
89. Ryder M. Peripheral access options. Surg Oncol Clin N Am.
1995;4(3):395–427.
90. Takasugi JK, O’Connell TX. Prevention of complications in perma-
nent central venous catheters. Surg Gynecol Obstet. 1988;167(1): 6–11.
91. Hull JE, Hunter CS, Luiken GA. The Groshong catheter: initial expe-
rience and early results of imaging-guided placement. Radiology. 1992;185(3):803–807.
92. Morris SL, Jaques PF, Mauro MA. Radiology-assisted placement
of implantable subcutaneous infusion ports for long-term venous access. Radiology. 1992;184(1):149–151.
93. Joels CS, Sing RF, Heniford BT. Complications of inferior vena cava l-
ters. Am Surg. 2003;69(8):654–659.
94. Grewal S, Chamarthy MR, Kalva SP. Complications of inferior vena
cava lters. Cardiovasc Diagn Ther. 2016;6(6):632–641.
95. Aruny JE, Lewis CA, Cardella JF, etal. Quality improvement guidelines
for percutaneous management of the thrombosed or dysfunctional dialysis access. J Vasc Interv Radiol. 2003;14(9 Pt 2):S247–S253.
96. Korneld ZN, Kwak A, Soulen MC, Patel AA. Incidence and manage-
ment of percutaneous transluminal angioplasty-induced venous rupture in the “stula rst” era. J Vasc Interv Radiol. 2009;20(6): 744–751.
3
https://t.me/medicina_free
Systems of Care in the Management of Vascular Injury
DONALD H. JENKINS, DOUGLAS M. POKORNY, and PHILIP M. EDMUNDSON
Trauma Systems Overview
Managing severe injuries requires the timely intervention of multidisciplinary teams, as well as the coordination of prehospital care and resuscitation begun at the point of injury. Fundamentally, trauma systems save lives by rapidly delivering critically injured patients in optimal condition to specialist surgical teams. The delivery of these patients to specialized trauma centers has repeatedly demonstrated signicant reductions in mortality compared with non­specialist centers.
A regional trauma system is a public health model that seeks to optimize outcomes among injured patients for a dened population.2 A true trauma system treats trauma as a disease entity. The system covers the whole patient pathway, from prehospital care, transportation, and the acute man­agement of injury through the reconstruction and rehabili­tation phases. Included in this public health approach is a responsibility for injury prevention in order to actively reduce the burden of disease in the population. This approach also includes a strong commitment to system-wide data collec­tion and analysis, which is utilized for performance improve­ment across the entire spectrum of patient care.
A trauma system goes beyond simply designating one hospital as a “Level I trauma center” conjoined with bypass protocols that send all injured patients to this institution. While this model may improve care for the severely injured, it has the potential to worsen outcomes for less seriously injured patients treated at the same center. Patients with mild to moderate injuries—who constitute 85% of all trauma patients—will suffer from de-prioritization within an overloaded hospital. Systems that comprehensively address the needs of patients within a given area (so-called “inclusive trauma systems”) incorporate all acute hospi­tals in a region and have been shown to produce better outcomes for a patient population. sive system are designated according to their capabilities and institutional commitments. In the United States, lev­els of capability are designated with a system from level I to level IV. In the United Kingdom, centers are designated as major trauma centers (MTCs), which manage severely injured patients, and trauma units (TUs), which manage mild and moderately injured patients. Other countries and military entities have similar tiered levels of care.
Patients with vascular injuries are among the prime beneciaries of the organized delivery of trauma care. The prompt resuscitation and early delivery of patients with active hemorrhage or ischemic limbs to a multidisciplinary
1
3,4
Hospitals in an inclu-
vascular-trauma service can save lives and limbs. Addition­ally, there tends to be considerable overlap in the personnel, expertise, resources, and infrastructure required to deliver complex trauma care and complex vascular care. These synergies can improve outcomes for both trauma and non­trauma emergency vascular patients alike.
Key Components of a Trauma System
The purpose of a regional trauma system is to reduce death and disability following injury, while ensuring efcient use of resources and personnel. Not all hospitals can be staffed and equipped to manage all injuries. Major trauma patients must be identied early in their clinical course and directed to denitive care in a exible and error-tolerant system that can deliver high quality clinical outputs. Key facets of a trauma system therefore include the following:
1. A prehospital care system that is closely integrated into the trauma system, with dened protocols to expedite patient triage
2. A regional trauma coordinating system integrating prehospital and hospital care to identify and deliver patients to a place of denitive care quickly and safely with proper notication to the hospital team
3. A network of hospitals with dened capability and capacity, and with predetermined transfer agreements for optimizing casualty ow
4. Specialized and designated regional trauma centers that have responsibility for the management of injured patients in the region
5. Acute rehabilitation services to improve outcomes and restore casualties back to productive roles in society
6. A continuous process of system evaluation, gover­nance, and performance improvement across the trauma network
7. Ongoing training and education for all healthcare professionals involved in the care of injured patients
8. An active injury prevention program to reduce the burden of injury for the population that the trauma system serves
9. A responsibility toward research into trauma and its effects, to continuously improve care and outcomes following injury
10. A system-wide plan for response to disaster and mass casualty incidents
34