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_32_библиотеки_им_акад_М_И_Перельмана

.pdf
Скачиваний:
0
Добавлен:
31.08.2026
Размер:
22 Мб
Скачать
172 Neurogenic Bladder
https://t.me/medicina_free
neurogenic bladder dysfunction. In addition, by commencing CIC early it may be possible to prevent or reduce the requirement for bladder augmentation as well as helping to safeguard the kidneys.
2. Monitoring of bladder function with renal
and bladder ultrasound scans (and periodic urodynamics) with the onset of clean inter­mittent catheterization being deferred.
ose who advocate this approach argue that it decreases the burden for the caregiv­ers and carries a lower risk of urinary tract infection (UTI) because bacteria are not being introduced into the urinary tract.
However, monitoring and deferred introduction of CIC are only appropriate for infants who have safe urodynamic param­eters of bladder function. CIC should be commenced if the initial urodynamic study demonstrates unfavorable characteristics such as reduced compliance, signicant detrusor sphincter dyssynergia, or high-grade VUR. Indications to abandon the observational approach in favor of CIC and anticholiner­gics include; development of hydronephrosis, worsening parameters of bladder function on urodynamics or recurrent UTIs.
INVESTIGATIONS
Routine follow-up typically comprises ultra­sound scans of the kidneys, ureters and bladder every 3 months during the rst year of life, then reducing to 6 monthly intervals until 3 years of age, with an annual scan thereaer. A baseline renogram with 99mTc dimercaptosuccinic acid (DMSA) or 99mTc dimercaptoacetyltriglycine (MAG3) is performed in the rst 6 months of life and repeated according to clinical indications. Renal function is monitored by measurement of serum creatinine (or cystatin c) on an annual basis – or more frequently in children with hos­tile patterns of bladder function or frequent UTIs. e frequency of video urodynamic stud­ies is determined by such factors as; the results of initial and subsequent studies, the perceived level of risk posed by the neurogenic bladder,
the frequent occurrence of UTIs or the onset of changes in the upper tracts on ultrasound. Urodynamics should be performed prior to pos­sible reconstructive surgery in children express­ing the wish to become socially continent.
VIDEO URODYNAMICS
A urodynamic study will provide informa­tion on bladder and sphincteric function. e study is performed using a dual lumen catheter inserted into the bladder (for lling and mea­surement of intravesical pressure) and a balloon catheter placed in the rectum for the measure­ment of intra abdominal pressure. e bladder is lled at a rate of approximately 10% of the estimated age-adjusted bladder capacity per minute. is is calculated according to the for­mula (age in years + 2) × 30 mL. For videouro­dynamics the bladder is lled with a solution of radiographic contrast material. During bladder lling, intravesical pressure (Pves) is recorded. e contribution made by the detrusor muscle (Pdet) to intravesical pressure is calculated by subtracting the intra abdominal pressure (Pabd) from the intravesical pressure ie (Pves – Pabd). Sphincteric function can be assessed by electro­myography with patch electrodes placed in the perianal region or by the insertion of needle electrodes (which is believed to be more accu­rate). However, there are some dierences in the use of electromyography. In the UK for example, X-ray screening (videocystography) is used in preference to electromyography for the assess­ment of sphincter function. At dierent stages in the study uoroscopic imaging is performed to visualize the bladder and to demonstrate abnor­malities such as trabeculation, divertucula, stones, and/or VUR. Particular attention is paid to the bladder outlet and sphincter, visualiz­ing whether it is open or closed and observing the relationship between sphincter activity and detrusor contractions.
A normal, healthy bladder remains stable during lling with pressures remaining below 15 cm H the detrusor muscle contracts aer relaxation
O throughout. At the time of voiding,
2
Video urodynamics 173
https://t.me/medicina_free
of the external sphincter allowing the blad­der to empty to completion. Points of interest during the lling phase include the maximum intravesical pressure, the involuntary leakage of urine (incontinence), and the pressure at which the leakage occurs. A high detrusor leak point pressure (DLPP) of >40 cm H2O is regarded as unsafe. Bladder compliance is calculated as vol­ume over pressure and a gure of <20 mL/cm H2O denotes reduced compliance (inability of the bladder to accommodate physiological vol­umes of urine at safe pressures). If the patient is capable of voiding, attention is paid to pos­sible detrusor-sphincter dyssynergia (contrac­tion of the detrusor muscle against sphinteric resistance), voided volume, post-void residual, ow rate, and characteristics of the ow curve (bell-shaped, staccato, intermittent, at). It is important to note, however, that interpretation of urodynamic ndings is relatively subjective and is inuenced by a number of factors includ­ing inter observer variations, limited reproduc­ibility, technical artifacts and patient anxiety.
A “safe” neurogenic bladder is one which does not pose a threat to the upper tracts and renal function. However, maintaining a safe pattern of bladder function is oen dependent on the use of
regular CIC. e type of bladder in which CIC is most likely to protect the upper tracts and help the child to achieve continence is one which is capable of storing physiological volumes of urine at safe pressure and in which sphincter resistance is suf­cient to prevent urinary leakage for periods of 3–4 hours between catheterization (Figure 13.1).
Urodynamic studies oen demonstrate abnor­malities of detrusor function, notably detrusor overactivity. Detrusor overactivity combined with a sphincter which fails to relax in response to detrusor contraction (detrusor sphincter dyssyn­ergia) is regarded as an “unsafe” or “hostile” pat­tern of neurogenic bladder dysfunction. Without appropriate intervention, over 70% of patients with detrusor sphincter dyssynergia will expe­rience urinary tract deterioration, including the development of hydronephrosis, within 3 years. In such cases, the functional bladder capacity is reduced and the bladder is typically thick walled and trabeculated (Figure 13.2). e nding of detrusor sphincter dyssynergia demands prompt intervention – initially by the introduction of CIC. However, this is oen insucient and fur­ther measures (notably bladder augmentation) may be required to safeguard the upper tracts and enable the child to achieve continence.
Figure 13.1 This is the type of neurogenic bladder which is most amenable to CIC. The blad-
der is capable of storing urine at “safe” pressures and sphincter resistance is adequate to retain physiological volumes of urine in the bladder for periods of 3–4 hours between catheterizations.
174 Neurogenic Bladder
https://t.me/medicina_free
Figure 13.2 Hostile characteristics. Overactive sphincter and/or detrusor sphincter dyssynergia
causing functional outow obstruction. Detrusor overactivity. Unfavorable urodynamic parameters, thick walled bladder and upper tract dilatation.
A dierent abnormality of sphincter func­tion is sphincter weakness due to denervation (typically associated with lower motor neuron lesions). is is a safe pattern of neurogenic blad­der dysfunction because the impaired sphincter resistance eectively acts as a “safety valve” pre­venting the bladder from generating sustained
elevated pressures. Functional capacity is reduced due to low pressure urinary leakage. Intermittent catheterization is not an eective means of achieving continence because the blad­der is incapable of storing urine without leakage for a suciently long period between catheter­izations (Figure 13.3).
Figure 13.3 Sphincter weakness (typically associated with lower motor neuron lesions). This is a
safe bladder but functional capacity is reduced because of low pressure leakage of urine. CIC does not achieve continence because the bladder is incapable of storing adequate volumes of urine between catheterizations.
Catheterization 175
https://t.me/medicina_free
Opinion diers on whether children with neu­rogenic bladder should routinely undergo annual urodynamic evaluation or whether it should be performed on a more selective basis in response to changes in clinical status (e.g. recent onset of UTIs, new or worsening urinary leakage, new or worsening upper tract dilation). Proponents of regular annual urodynamics argue that it is not sucient to rely on monitoring the upper tracts because hydronephrosis is not a sensitive indica­tor of deteriorating lower tract function. ose who favor a selective approach cite the greater nancial cost of annual studies and the larger number of studies which have to be performed in order to detect those cases of deteriorating blad­der function for which intervention might be required. Regardless of diering policies regard­ing the frequency of urodynamic studies there is a strong consensus that all patients with neu­rogenic bladder should remain under urologic surveillance to safeguard the upper tracts, ensure adequate emptying of the bladder, and minimize the risk of UTI.
TETHERED SPINAL CORD
Children with a tethered spinal cord mostly have a much better prognosis than those with meningomyelocele.
TREATMENT AND OUTCOMES
e primary aim is to safeguard renal function and minimize the risk of UTIs by ensuring that urine is stored at low pressures and the bladder empties completely every 3–4 hours. Once this has been achieved the secondary aim is to try and provide a socially acceptable degree of urinary continence if this is a priority for the child and their family.
Bladder emptying can be achieved by spon­taneous voiding in some cases, or more oen by intermittent catheterization (via the urethra or a catheterizable channel) or by a cutaneous vesicostomy or urinary diversion. Reduced func­tional capacity of the bladder and/or unsafe intra­vesical pressure can be managed by intravesical injections of Botox or by bladder augmentation. Finally, bladder neck procedures to increase blad­der outlet resistance children can be performed to treat incontinence caused by sphincter weakness.
is is common feature of closed variants of spina bida (occult spinal dysraphism). Up to 60% of children have normal urodynamic nd­ings during early infancy but this gure has fallen to 20% by 3 years of age. ese ndings have been cited as evidence that this is a pro­gressive neurologic lesion for which early sur­gical intervention to untether the spinal cord is indicated in order to improve urodynamic outcomes. However, this does not obviate the requirement for continuous monitoring and follow-up because there is a 25% incidence of retethering aer surgery. Some care is required when interpreting and the published data on pre and postoperative urodynamic studies in children undergoing surgery for tethered cord. Whereas neurosurgical intervention for teth­ered cord in infants is widely performed by pediatric neurosurgeons in the United States a more conservative, selective policy is generally favored by British Pediatric Neurosurgeons.
CATHETERIZATION
Clean intermittent catheterization (CIC) is usually initially performed via the urethra but for some young patients this may not be feasible or acceptable in the longer term. is may be because of body habitus, inability to catheterize the urethra or the preference of the child and/ or family. In these circumstances it becomes necessary to create an alternative route for cath­eterization, namely a continent catheterizable channel.
e introduction of the Mitrofano appen­dicovesicostomy was a signicant advance in the management of neurogenic bladder dys­function (Figure 13.4). It usually provides patients with a much greater degree of per­sonal independence and has been shown to be durable with a high long-term success rate. e
176 Neurogenic Bladder
https://t.me/medicina_free
Figure 13.4 Appendicovesicostomy (Mitrofanoff
procedure). The appendix is disconnected from the caecum and mobilized on its blood sup­ply. The tip is excised to create a tube which is implanted into the bladder using a submucosal (anti reux) tunnel. The other end of the appen­dix is brought out as a discreet stoma on the skin of the abdominal wall (or umbilicus).
commonest complication is stenosis of the cuta­neous stoma – with a reported incidence varying between 15% and 40% over a 5-year period. is is usually amenable to simple revision, although more than one revision may be required. e Mitrofano procedure is particularly benecial for young females – especially those conned to a wheelchair.
If the appendix is not available because it has been removed, is unusable, or reserved for another channel (such as appendicocecostomy) the main alternative is a channel created from the wall of the ileum or colon – eponymously named as Monti or Yang-Monti channel (Figure 13.5). However the appendix is the preferred source of a continent catheterizable channel because it pro­vides the most reliable access for the passage of catheters and has a lower complication rate com­pared with the alternatives.
Intermittent catheterization is a clean rather than sterile procedure and some bacteria are inevitably introduced into the bladder with the passage of the catheter. Approximately 70% of
Figure 13.5 Monti tube fashioned from ileum.
This is the most satisfactory alternative to the appendix for creating a continent catheterizable channel.
patients on CIC have asymptomatic bacteriuria but fewer than a third of these experience symp­tomatic UTIs. e risk of UTIs can be lowered by increasing the frequency of CIC to minimize the opportunity for bacteria to multiply within static bladder urine. Where possible, the use of antibi­otics should be kept to a minimum to reduce the risk of bacterial resistance.
CIC is typically performed at 3–4 hourly inter­vals throughout the day. Night time manage­ment is oen more problematic because children and parents may (understandably) be reluctant to have perform CIC late at night or the early hours of the morning. is is of particular relevance in those neurogenic bladders which exhibit “hostile” characteristics since this may lead to sustained high-pressure storage of urine and consequent del­eterious eects on both the kidneys and bladder. As in children with posterior urethral valves, over­night drainage with an indwelling catheter has been shown to be benecial in protecting bladder and renal function and reducing the frequency of UTIs.
INCREASING BLADDER CAPACITY AND REDUCING INTRAVESICAL PRESSURE
e options for achieving this include: pharma­cological agents, intravesical injections, and sur­gical reconstruction.
Bladder augmentation (enterocystoplasty) 177
https://t.me/medicina_free
Pharmacological Agents
Oxybutynin is currently the only anticholiner­gic drug approved by the American Food and Drug Administration (FDA) for the treatment of neurogenic bladder in children. Anticholinergics act by suppressing overactivity of the detrusor muscle but have the disadvantage of causing anticholinergic side eects such as dry mouth, constipation, ushing, and impaired concen­tration. Alternative agents for the treatment of detrusor overactivity include other anticholin­ergics and Mirabegron – a beta-3 adrenergic agonist. Although none of the currently available alternatives to oxybutynin are approved for use in children by the FDA, clinicians may decide to prescribe them on an “o-label” basis for young patients those who are unable to tolerate rst-line agents such as oxybutynin. Alpha-adrenergic blockers (such as doxazosin and tamsulosin) which act on receptors at the bladder neck smooth muscle can be used for the management of functional outow obstruction in children with both non-neurogenic and neurogenic voiding dysfunction. Studies in small series of patients have been reported to demonstrate improved ow rates and reduced post void resid­ual volumes in those capable of voiding sponta­neously. However, there are conicting data and the published studies are of varying quality. e side eects of alpha-adrenergic blockers include orthostatic hypotension, reex tachycardia, syn­cope, dizziness, and palpitations.
INTRAVESICAL BOTOX INJECTIONS
Botulinum A toxin is a neurotoxin produced by
Clostridium botulinum. When injected into the detrusor muscle, it inhibits the release of ace­tylcholine from the presynaptic neuron at the neuromuscular junction. Intravesical Botox is used for the treatment of detrusor overactivity to improve bladder compliance and increase func­tional capacity. Injections into the bladder wall muscle are performed at multiple sites via a cys­toscope. e standard dosage is 10 international
units (IU) per kg up to 300 IU in adults. Although it is not approved by the FDA, numerous studies have shown intravesical Botox injection to be a safe and eective treatment of neurogenic blad­der in both children and adults. e duration of eect is approximately 6–12 months. In one study in children with spina bida 73% of patients were enabled to become dry between intermittent cath­eterizations for 4 months aer intravesical Botox injection and 88% experienced symptomatic improvement. Intravesical Botox injections can administered repeatedly without giving rise to tolerance (loss of eectiveness) or causing bro­sis in the bladder wall. e principal side eect is impaired bladder emptying and patients should therefore be prepared for the possibility that they may need to perform CIC – if they are not already doing so. UTI is another potential complication but systemic side eects are rare.
BLADDER AUGMENTATION (ENTEROCYSTOPLASTY)
is is a reliable means of increasing bladder capacity, improving bladder compliance, and reducing intravesical pressure. e urodynamic prole of children being considered for augmen­tation is characterized by reduced functional bladder capacity, elevated absolute detrusor ll­ing pressures (P sor leak point pressures (>35 cm H2O), and poor compliance (<10 mL/cm H2O). In addition, there are oen upper tract changes such as hydrone­phrosis, hydroureteronephrosis, or secondary VUR. Bladder augmentation is most frequently indicated in children with thoracic and lumbar meningomyelocele and less commonly in those sacral spina bida and lipomeningocele. It is rarely required in cases of tethered spinal cord.
e technique consists of opening the blad­der and incorporating a vascularized segment of intestine (ileum or sigmoid colon) into the blad­der wall. It is usually performed as an open surgi­cal procedure but a minimally invasive approach has also been reported. e simplest (and prob­ably most widely performed) technique is the “Clam” ileocystoplasty (Figure 13.6).
>40 cm H2O), elevated detru-
det
178 Neurogenic Bladder
https://t.me/medicina_free
Figure 13.6 Clam ileocystoplasty. (a) Bladder opened and incised down to the trigone creating a
“clam” conguration. (b) Segment of ileum isolated on its mesentery, opened (detubularized) and sutured to the bladder. (c) Intraoperative photograph.
By adopting Enhanced Recovery aer Surgery protocols developed in adult patients undergoing radical cystectomy it has been possible to reduce the duration of hospital stay for children under­going bladder augmentation in the authors’ insti­tution from 8 to 5.4 days. In addition the average number of complications per patient has been reduced from 2.1 to 1.3 (p = 0.035).
Augmentation cystoplasty is associated with a signicant incidence of long-term complications, with approximately one-third of patients requir­ing some further surgery within 13 years of the original operation (Table 13.2). Introducing intestine into the urinary tract carries a risk of hyperchloremic hypokalemic metabolic acidosis and possible implications for growth. Vitamin B
deciency is an additional risk following aug-
12
mentation with distal ileum. Asymptomatic bac­teriuria is almost universal as a result of bacterial colonization of the reconstructed bladder and the presence of mucus in the urine. Symptomatic infections also occur in up to a third of patients. Other complications may include bladder stone formation (10–20%) (Figure 13.7) and sponta­neous bladder perforation (5%). is is serious and potentially lethal complication if it is not diagnosed promptly. A high index of suspicion is required because the initial presentation of bladder perforation may consist of no more than
Table 13.2 Complications of bladder
augmentation
Mucus production
Catheter blockage Urinary tract infection Bladder stones
Metabolic changes
Hyperchloremic metabolic acidosis Electrolyte disturbances
Spontaneous perforation Metaplasia, malignancy Bowel problems
Diarrhea Vitamin B
Hematuria-dysuria syndrome (gastrocystoplasty)
deciency
12
vague abdominal pain. A computed tomography (CT) cystogram is the most accurate diagnostic investigation. Adhesive intestinal obstruction occurs in approximately 5% of patients within 15 years of bladder augmentation.
e high rates of late malignancy in patients fol­lowing ureterosigmoidostomy and the ndings of studies demonstrating bacterial-derived carcino­gens in the urine following enterocystoplasty raised initial concerns that the use of bowel for bladder reconstruction would carry a signicant long-term
Figure 13.7 Ultrasound scan demonstrating
https://t.me/medicina_free
3.5 cm bladder stone in an augmented bladder.
cancer risk. However, it has now become clear that these concerns were largely unfounded. Long-term studies have found that the risk of bladder cancer in patients with spina bida who had undergone blad­der augmentation is not signicantly higher than in age matched spina bida patients whose bladders had not been augmented. e overall long-term incidence of bladder cancer has been reported to lie between 1% and 4%, with no signicant dierences between augmented and non-augmented patients in terms of age at diagnosis or survival rates.
Although cystoscopic surveillance and biopsy commencing 10 years aer augmentation was previously advocated this has been discontinued in most centers because it not been shown to be helpful or cost eective.
Experimental Research
Bladder outlet procedures 179
for bladder augmentation in spina bida patients found that it did not result in any improvement in bladder compliance or capacity. In addition there was a relatively high rate of serious adverse events – including bladder rupture. On the basis of this study, the authors concluded that the technique could not be recommended for clinical use.
VESICOURETERAL REFLUX
Up to 20% of infants with neurogenic bladder have VUR. Because this VUR is oen secondary to the unfavorable urodynamic features of the neuropathic bladder it will resolve in approxi­mately 50% of cases once bladder dynamics have been improved by CIC and anticholinergic medi­cation. If the VUR persists despite these mea­sures and the child is suering recurrent UTIs it is reasonable to consider correcting the reux by ureteral reimplantation. However, this is most unlikely to succeed unless it is also accompa­nied by other measures to address the underly­ing bladder dysfunction. Endoscopic correction by sub-ureteric injection of bulking agents has a lower success rate in neuropathic bladders – although success rates of 60% to 70% have been claimed by some authors. Ureteral reimplanta­tion can combined with bladder augmentation but is technically more dicult than in a nor­mal bladder. However, ureteral reimplantation is oen unnecessary because secondary VUR has a high tendency to resolve once the unfavorable characteristics of the neurogenic bladder have been corrected by bladder augmentation.
Because the complications of augmentation are largely attributable to the use of intestine, a num­ber of research programs have tried to address this problem by devising experimental techniques to augment the bladder with materials derived from tissue engineered autologous urothelium or acellular matrices (serving as scaolds for regen­erative cellular inltration). Clinical experience of this approach is very limited. Following an initial report in a small series of meningomyelo­cele patients, a subsequent Phase II study of the use of autologous seeded biodegradable scaolds
BLADDER OUTLET PROCEDURES
Although a number of dierent surgical proce­dures are available for increasing bladder outlet and sphincteric resistance, no single technique has proved suciently reliable to have gained widescale acceptance. When considering any of these procedures it is essential to ensure that the patient has the physical ability and motiva­tion to perform intermittent catheterization. Preoperative evaluation includes imaging of the
180 Neurogenic Bladder
https://t.me/medicina_free
upper tracts and video urodynamics. If possible, bladder compliance and detrusor activity should be assessed with the bladder outlet occluded to try and predict how the bladder will behave fol­lowing surgery. Unless there is good evidence that the bladder will function as a safe low pressure reservoir, strong consideration should be given to performing bladder augmentation at the same time as the surgery to increase outlet resistance.
e surgical procedures can considered in three broad categories (Figure 13.8):
Operations designed to increase xed outow
resistance by narrowing the bladder outlet
and/or increasing the length of the urethra
e.g. Kropp, Pippi Salle procedures.
Operations designed to enhance outow
resistance by compressing or angulating the
bladder neck and/or urethra, e.g. articial urinary sphincter, colposuspension, or sling.
Closure of the bladder neck.
Closure of the bladder neck is the most eective means of achieving continence but is usually kept in reserve as a second line approach.
ere is considerable variation between dier­ent published studies in the reported continence rates following the dierent procedures. Published continence rates typically average around 60% to 70% but the published results are dicult to com­pare because of dierences in the denition of what constitutes “continence” adopted in dierent studies and the varying duration of follow-up.
Injection of bulking agents into the bladder neck and sphincter region has also been reported as a method of increasing xed outow resistance.
Figure 13.8 Some of the procedures available for increasing sphincter/outow resistance. (a) Urethral
lengthening (e.g. detrusor tube) to increase static outow resistance. (b) External compression by an articial urinary sphincter cuff implanted around the urethra. The pump is implanted in the scrotum and the pressure regulating balloon is implanted in a plane between the peritoneum and abdominal wall musculature. (Reproduced by permission from American Medical Systems). (c) Sling procedure. Slings created from autologous or allograft tissue are preferable to synthetic materials.
Neurogenic bowel 181
https://t.me/medicina_free
e continence rates are generally inferior to those achieved by open surgical techniques but a success rate of 25% with one or two injections has been reported.
Complications of the various dierent pro­cedures include outow obstruction (“hyper­continence”), tissue erosion, infection, and malfunction of articial sphincter devices. A fur­ther complication is the relatively high incidence of bladder stones – particularly in patients who have also undergone enterocystoplasty.
Closure of the bladder neck is generally seen as a reliable last resort when other techniques have failed. Nevertheless, some pediatric urologists favor bladder neck closure sooner rather than later. e principal drawback of bladder neck clo­sure is that the bladder becomes an enclosed sys­tem, with emptying being entirely dependent on a catheterizable channel or indwelling suprapubic catheter or drainage device.
Cutaneous urinary diversion (ileal conduit) was once the mainstay of management of neu­rogenic bladder but is now rarely used because of the availability of better alternatives. Specic complications include stomal stenosis, long-term upper tract changes and the adverse impact on body image and quality of life imposed by the stoma and urine collection bag.
TRANSITION TO PUBERTY IN ADULTHOOD
Unfortunately, there is a tendency for myelomenin­gocele patients to become less compliant with regu­lar CIC and other aspects of their care when they progress into adolescence and adulthood. In the United States over 50% of adult spina bida patients whose neurogenic bladders were previously man­aged by intermittent catheterization will cease to perform CIC, contrary to medical advice. Factors implicated in poor compliance with treatment and follow-up include obesity, immobility, develop­mental delay and alcohol and drug dependence.
ose patients who comply with measures to manage their neuropathic bladder appropriately and who remain u nder urologic surveil lance have a very low long-term risk of severe renal impairment
(2%). Indeed, they more likely to die from infec­tion, shunt complications, and pulmonary embo­lism than renal failure. However, the risks of renal impairment and urological complications are signicantly higher in adult spina bida patients who do not comply with recommended treatment or are lost to urologic surveillance.
Spina bida patients require multispecialty healthcare throughout their lives and it is impor­tant that they receive the help they need to make a successful transition from the care of pediatric specialists to the care of adult specialists in the relevant disciplines.
SEXUALITY AND REPRODUCTIVE HEALTH
e early onset of menarche is more common in female myelomeningocele patients than the gen­eral population (12% and 0.6% respectively) and they are less likely to use contraception when they become sexually active.
Pregnancy creates specic problems – par­ticularly in women who have previously under­gone reconstructive procedures such as bladder augmentation or the creation of catheterizable channels. Obstetric care should be provided by multidisciplinary team including obstetrician­gynecologist, urologist and other clinicians. Elective caesarian section is oen more appropri­ate than vaginal delivery.
Males may experience erectile dysfunction (ED) of varying severity and 80% of men with spina bida have been demonstrated to have improved erectile function with the use of sildenal.
One-quarter to one-third of adolescents and young adults with meningomyelocele between 14 and 23 years of age report having had sexual encoun­ters but only half of meningomyelocele patients state that they are satised with their sexual lives.
NEUROGENIC BOWEL
e majority of children with neurogenic bladder also suer from neurogenic bowel dysfunction. is is unsurprising since the lower urinary tract
ALGRAWANY