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Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_6022_Библиотеки_им_академика_М_И_Перельмана

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andexpertiseofatraumacenterinoptimizingcareforacuteSCIalsoinfluence the risk of pressure injury development (92). Indeed, individuals initially admittedtoanon-SCIlevelonetraumacenterwerealmostthreetimesaslikely todevelopapressureinjurywhencomparedtopersonswhoreceivedcareatan organizedSCItraumacenter(34%vs.12%,respectively)(92).Inasubsequent study, specialized SCI trauma centers for acute care (26.7%) also reported substantially lower rates of pressure injury after initial SCI occurrence when compared to nonspecialized trauma centers (51.5%), which further confirmed theimportanceofdedicatedSCI-specificcenters(93).Personshospitalizedina nonspecialized trauma center were also more likely to suffer from multiple pressureinjuriesthanthosetreatedinaspecializedSCItraumacenter(24.2%vs.
2.2%,respectively)(93).Regardingtiminganddurationofpressureinjury,50% ofhospital-acquiredpressureinjuriesoccurredwithin30daysofadmissionand themediantimeforclosureofpressureinjuryduringhospitalizationwas31days (94). Thus, pressure injury development remains a significant source of morbidityinthenewlyinjuredindividual.
Earlyinterventionandcontinuedvigilanceisimportantinthepreventionof pressureinjuries.Intheinstancethatanactualpressureinjurydevelops,timely detectionallowsfortheimplementationofeffectivetreatmentstrategiesthatcan minimize associated morbidity,mortality,and cost associatedwith these often preventablecomplications. Furtherdetails onpressureinjuries arediscussedin
Chapters29and30.
GASTROINTESTINALCOMPLICATIONS
Thereisriskofanumberofcomplicationsof the gastrointestinal (GI) system during the first month of SCI, which include reflex ileus (4.6%), acute gastroduodenalulcerationandhemorrhage(4.2%),andpancreatitis(11.5%)(95–
97). Individuals with cervical and upper thoracic injuries exhibited higher GI
complicationrates thanthosewith lower thoracicorlumbosacral injuries(98). Given that acute abdominal pathology is challenging to identify in the SCI population, a low-level threshold is needed to avoid underdiagnosis or misdiagnosisofGIcomplications.
ColonicmotilityimpairmentoccursearlyafterSCI.Anadynamicileusisa functional obstruction of the intestinal tract without the actual presence of mechanicalblockage.Ileusoccursmostoftenduringthefirst2daysafterinjury andmostcommonlyimproveswithin2to3daysofonset(99).Duringtimeof
ileus,absentorhypoactivebowelsoundsmaybepresent(96).Ileusisthoughtto be caused by acute loss of both sympathetic and parasympathetic innervation duringspinalshock(99).Diagnosiscanbemadethroughphysicalexamination and radiographic imaging. Subsequent bowel distension and insufficient eliminationmayresultinnauseaandemesis,poorlungexpansion,anorexia,and inadequatevenousreturn(3).
Managementofileuscaninvolvebowelrestwithatemporarilyhaltinoral feeding. Nasogastric decompression (without suction) is instituted until the return of bowel sounds (99). Pharmacologic approaches include prokinetic agents such as metoclopramide, which help to increase gastric motility. Metoclopramide acts predominantly in the foregut through cholinergic and dopaminergicreceptors(100).However,cautionisadvisedregardingprolonged useofmetoclopramide,giventheserioussideeffectsincludingawarningwith linkage to tardive dyskinesia (101,102). In cases of persistent ileus, erythromycinmayalsobetrialed(103).IleussecondarytoSCImayalsorespond toneostigmineorintravenouslidocaine(104,105).
Unsurprisingly,pepticulcerperforationhasthehighestoccurrencewithinthe firstmonth after initial injurywithreported rates from 1% to5.5%(106,107). ThegreatestriskforGIbleedisduringtheinitial3to17dayspostinjury(107). Afteracuteinjury,stressulcerprophylaxiswitheitherhistamine-2(H2)receptor antagonistorprotonpumpinhibitors(PPIs)isrecommendedforatleast4weeks inallindividuals(108).PPIsmaybemoreeffectiveinpreventingbleedingwhen compared to H2 blockers, but prolonged use of PPIs may be associated with increasedriskofClostridiumdifficileinfection(3).Cliniciansshouldweighthe risks versus benefits of prolonged courses of PPIs beyond 4 weeks. Corticosteroid use is associated with increased risk of GI bleeding and ulcer perforationinhospitalizedpatients(109).
Additionally, Pirolla et al. demonstrated an incidence rate for acute pancreatitis of 11.53% in acute SCI (97). As such, the authors recommend screeningforpancreatitiswithserumamylaseandlipaselevelsintheindividual with acute SCI (97). Further imaging with CT or MRI may be required secondary to limited physical examination findings in SCI patients, given the potentialabsenceofsensation.Theoccurrenceofacutepancreatitisorelevated pancreatic enzymes are more likely in patients with complete neurological injuries(AISA),cervical-orthoracic-levelneurologicalinjuries,orpresenceof an adynamic ileus (97). Steroid use is also associated with acute pancreatitis (110).
WithregardtotheupperGItract,cliniciansshouldmaintainalowthreshold for screening for dysphagia in individuals with cervical-level SCI. The occurrence of dysphagia in those diagnosed with acute tetraplegia was 41% (111).Significantpredictorsfordysphagiaincludetracheostomyandmechanical ventilation,spinalsurgeryutilizingananteriorcervicalapproach,thepresenceof a halo-vest, and older age (112,113). Early detection of dysphagia allows for appropriate dietary modifications and reduction in potential respiratory complications,such as aspiration pneumonia. Enteralfeedingis preferred over the parental route and can be safely initiated within 72 hours of injury as medically appropriate (114). Indeed, early eternal nutritional support is associatedwithimprovedoutcomes,decreasedcomplicationrates,anddecreased lengthofstayinmultitraumapatients(3).UsingtheSpinalNutritionScreening Tool (SNST), one multicentered prospective study demonstrated that undernutritionorriskforundernutritionwasassociatedwithsignificantlylonger length of stay and higher mortality rate at 12 months (115).Additionally,the highestnutritionalriskwasfoundinpersonswithSCIwhopreviouslyrequired ICUcare,mechanicalventilation,orartificialnutritionalsupport(115).
Appropriatesurveillancewith laboratory testing and use of GI prophylaxis canhelpminimizesecondaryGIcomplicationsintheindividualwithacuteSCI. Diagnosisof abdominal pathologycan be challenginginindividuals withSCI. Forinstance,classicalsignsofanacuteabdomenthatincludeabdominalmuscle rigidity,abdominaltenderness,andreboundtendernessareoftenabsentinthose withacervicallevelofinjury(106).Inadditiontolaboratorytesting,radiologic studiesare often needed to correctly identifytheunderlying GI pathology and guide further treatment (106). Finally, evaluation for dysphagia and implementation of feeding with the goal of providing appropriate nutrition supportremainsanimportantcomponentofGImanagement.
NeurogenicBowel
Neurogenicbowelisoneofthemostcommonsecondarymedicalcomplications in SCI. In individuals with upper motor neuron bowel dysfunction, reflex­mediateddefecationmaynotoccuruntiltheterminationofspinalshock,which may last hours to weeks (116). Once a patient begins enteral feeding, bowel movements should occur with the assistance of an established bowel program (3). A neurogenic bowel program should be initiated during the acute hospitalizationperiod to minimize complications such as colorectal distention,
obstruction,orimpaction(95,98).Inbrief,abowelprogramshouldbescheduled atthe same time each day,typically 30 minutes after the ingestionof foodto elicit the gastrocolic response if the patient is on an oral diet. Moreover, the bowelprogramshouldbeperformedatleastonceevery2days.Dietandfluids canhelptomodifystoolconsistency.Sinceinitiationofthebowelprogrammay involve significant education of both the patient as well as acute care teams, particularly nurse providers, training early onduring the hospital stay may be beneficial.Whilethebowelprogramstartsinacutecare,itscomponentsmaybe continually adjusted to achieve predictive and effective evacuation (98). (See
Chapter23forfurtherdetailsonestablishinganeffectivebowelprogram.)
BLADDERMANAGEMENT
Neurogenic bladder is a common issue after acute SCI, characterized by the inabilitytovoidvoluntarily.Duringtheperiodofspinalshock,urinaryretention iscommon in bothcompleteand incompleteSCIsecondary due totheloss of genitourinary(GU)tractreflexactivity(3).Transurethralbladdercatheterization shouldbeinstitutedassoonaspossibleunlessurethralinjuryissuspected,which may be accompanied by further pelvic trauma (117). Signs of urethral injury includebloodatthemeatus,hematuria,orahigh-ridingprostateinmales(3).
Anindwellingcatheterallowsforprecisemonitoringof urinaryoutput and facilitatestheaccurateassessmentoffluidbalanceintheacutephasefollowing SCI. However, specific to patients with neurogenic bladder, an indwelling catheterin those with acuteSCIprovides further benefits, particularlyensured bladderemptying.Whileconcernsforcatheter-associatedurinarytractinfections (CAUTIs) often lead to early removal of indwelling catheters in patients, the updated 2014 Association for Professional in Infection Control and Epidemiology (APIC) guidelines for prevention of catheter-associated urinary tract infection (CAUTI) recommend that certain individuals with SCI may requireeitheranindwellingurinarycatheterorasuprapubiccatheter(118).We recommendmaintaininganindwellingcatheterduringtheacutephaseofinjury while patients are being medically stabilized and may require urgent fluid resuscitationorIVmedications.
Careful maintenance of indwelling catheters include avoidance of kinked catheter tubing, routine emptying of leg bag before it reaches half-full, and monitoring for slow drainage or obstruction due to catheter encrustation or stones (119). Indwelling urethral catheters are recommended to be changed
every2to4weeksastheriskofcatheterencrustationincreaseswithhowlong an individual catheter is kept in place (117). Continued use of an indwelling catheteraftertheinitialacuteperiodpostinjuryisrecommendedforpersonswith poor hand function, high fluid intake, cognitive impairment, elevated detrusor pressure,inthemanagementofvesicoureteralreflux,topreventdevelopmentof autonomicdysreflexia with bladder filling, and/orthosewith limited caregiver assistance(117).
From a medical standpoint, indwelling urethral catheterization may be removedwhenanindividualishemodynamicallystableandnolongerrequires significant amounts of IV administration. The APIC recommends intermittent catheterization(IC)programfor individualswho cancatheterize independently (118). Functionally, an individual should have the physical ability to independentlyperformICand the cognitive ability to adhere to the scheduled regimenandfluidrestrictionrequiredtoeffectivelymanageICindependently.
An IC program consists of either an individual with SCI or his or her caregivertemporarilyinsertingacatheterintothebladderonaroutineschedule todrainthebladder.Thenormalbladdercapacityis500ml;ICvolumesshould be maintained below normal bladder capacity to reduce the risk of bladder overdistensionandischemia.TheuseofanICprogrameliminatestheneedfora constant indwelling catheter. While IC is considered the gold standard for bladdermanagementinSCI,severalreasonsexistfordelayingan ICprogram. ComplicationsassociatedwithICprogramincludeUTI,bladderoverdistension, and urinary incontinence (unless volumes are closely monitored), urethral trauma, urethral false passage development, urethral stricture, autonomic dysreflexia,andbladderstones(117).
Whendecidingonneurogenicbladdermanagement,therearethreeimportant goals, including preservation of the upper tract, decrease in lower tract complications,andcompatibility withfunctionandlifestylegoals (117).While previousthoughtrationalesuggestedanacontractiledetrusorduringacuteSCI,a recent study published by Bywater et al. reported almost two-thirds of individualsdevelopedunfavorableurodynamic activity categorized as detrusor overactivity, detrusor sphincter dyssynergia, elevated maximum detrusor pressure, vesicouretero-renal reflux, and low bladder compliance (120). Both maintainingan indwellingcatheter andinitiatingan ICprogram areassociated with risks and benefits in the individual with SCI and, as such, need to be carefullydecidedupon andmonitored. Otherlesscommonmethodsof bladder managementthatincludeCredeandValsalvaarediscussedindetailinChapter
22onbladdermanagement.
ANEMIA
AnemiaisacommoncomplicationfollowingacuteSCI.Initialbloodlossmay occursecondarytotheinitialtraumaticeventorduring surgery.Inonereview, estimatedbloodlossranged from674to3,556mLbasedonthecomplexityof spinal surgery and requirement of fusion (121). Once a patient arrives in the intensivecare unit, frequent phlebotomy furtherdepletesan individual’sblood supply. In addition, aggressive resuscitation with IV fluids during the initial injurymayalso lead to hemodilution. In a recent review evaluating restrictive versusliberalredbloodcelltransfusionprotocols,theidealhemoglobinlevelfor transfusion is unknown, given the limited number of individuals with SCI included in the studies (122). Reduced hemoglobin concentrations, however, lead to impairment in oxygen delivery to both brain and spinal cord tissues (122).
Inoneprospectivestudy,Grossmanetal.reportedthat15.9%ofacuteSCI developsevereanemia(hemoglobin≤8.0mg/dl)duringtheinitialhospitalization period(123).Atinitialadmissionto rehabilitation,onestudyshowedthat65% of patients were anemic (hemoglobin <13.0 g/dl) and 86.7% were hypoalbuminemic (albumin <3.2 g/dl) (124). Previously, Huang et al., had showed the most common form of anemia was normochromic-normocytic during the acute phase of SCI (125). By 1 year after SCI, however, anemia improves in most patients; in those who show persistent anemia, it may be associatedwithconcurrentchronicinflammatoryconditions(124).
THERAPY
Early involvement of physical therapy (PT), occupational therapy (OT), and speech therapy (ST) services in the acute care hospital setting remains an important component of SCI care. PT focuses on early mobilization of the patientasmedicallyappropriate(126).Inaddition,PTalsoeducatesthepatient andfamilyaswellastheclinicalcareteamregardingrange-of-motionexercises of the extremities to help maintain joint mobility as well as muscle mass. Exercise programs are based on a person’s neurological status and medical stability.OTassistsintheprovisionofappropriatesplintstomaintainanatomic
positioning of joints and to preventcontractureformation. Along with splints, OT can also assess and educate persons with SCI about specialized tools for activities of daily living and for communication. Finally, ST evaluates swallowing function and treats dysphagia when present. For those with tracheostomies,ST also works on communicationstrategiesthatcan include a speakingvalve.Employingamultidisciplinaryapproachduringtheacutephase ofSCIenablestheinitiationofrehabilitationstrategiesearlyonwiththegoalof improving function and independence while minimizing complications from immobility.
CONCLUSION
This chapter aims to highlight the importance and strategies of acute managementoftraumaticSCIpatients.Betteroutcomesaregenerallyassociated with early recognition of injury, management at an appropriate facility, and timelyinitiationofappropriatenonsurgicalandsurgicaltreatments.Furthermore, throughasystematicapproach,secondarymedicalcomplicationscanbereduced orprevented. Proper management can reduce duration of acute hospitalization andallowforearliertransitiontocomprehensiverehabilitation.
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