Lower urinary tract dysfunction in ambulatory patients with incomplete spinal cord injury

Bladder responses to thoracolumbar epidural stimulation in female urethane-anesthetized rats with graded contusion spinal cord injuries

Spinal cord epidural stimulation (scES) is a therapeutic option that promotes functional improvements in sensory, motor, and autonomic functions following spinal cord injury (SCI). Previous scES mapping studies targeting the lower urinary tract (LUT) in rats demonstrated functional response variability based upon lumbosacral level, parameters used, extent of injury (spinally intact versus chronic anatomically complete spinal transections), and sex. In the current study, female rats with clinically relevant graded incomplete T9 contusion injuries were mapped with scES at 60 days-post-injury at three spinal levels (T13, L3, L6) with a novel miniature 15-electrode array designed to deliver optimal specificity. The results obtained during bladder fill and void cycles conducted under urethane anesthesia indicate frequency dependent sub-motor threshold effects on LUT function with a single row of electrodes positioned across the full medio-lateral extent of the dorsal cord. The findings of improved storage and emptying, represented by significantly longer inter-contractile intervals with T13 scES and L3 scES and by a significantly increased estimated void efficiency with L6 scES, respectively, is consistent with previous studies using intact and chronic complete transected male and female rats. The data support the efficacy of selective spinal network stimulation to drive functionally relevant networks for storage versus emptying phases of the urinary cycle. The current findings further demonstrate the translational promise of scES for SCI individuals with LUT dysfunctions, regardless of injury severity.

Beneficial carry-over effects of chronic at-home genital nerve stimulation on incontinence in individuals with spinal cord injury: A pragmatic trial

BACKGROUND

Genital nerve stimulation (GNS) is a promising, but under-researched, alternative treatment for neurogenic detrusor overactivity (NDO) in those with spinal cord injury (SCI).

OBJECTIVES

To investigate the urodynamic, quality-of-life (QOL) and carry-over effects of GNS when applied at home for 2 weeks by participants with incomplete SCI and NDO during activities of daily living.

METHODS

Seven men and 1 woman participated in this 1-month protocol study. Urodynamic and QOL data were gathered during week 1 (baseline measurements), followed by 2 weeks of daily GNS at home using a portable device. GNS was applied either on-demand or thrice daily, depending on the individual's sensation. At week 4, post-stimulation tests were repeated to record any carry-over effect from the GNS. Participants maintained voiding diaries throughout the study. Assessments were carried out at the end of each protocol period in a randomized order. Clinical procedures were conducted at Taipei Medical University Hospital (Taipei, Taiwan).

RESULTS

Everyone completed the study but only 7 of the 8 participants completed their voiding diary. Two weeks after GNS, average cystometric bladder capacity was increased by 30 % compared to baseline (P< 0.05). A 1-week carry-over effect was demonstrated as this capacity remained, on average, 35 % greater than baseline in week 4 after GNS was stopped (P< 0.05). Incontinence frequency significantly decreased by the end of week 3 (P< 0.05) but no significant improvements were recorded for either detrusor pressure or bladder compliance.

CONCLUSIONS

Chronic at-home GNS improved cystometric bladder capacity and reduced urinary incontinence for individuals with incomplete SCI and NDO. A carry-over effect of 1 week was observed following GNS treatment. The use of portable GNS treatment that can be applied by the individual at home merits further investigation as alternative treatment for NDO in those with SCI.

A comparison of urodynamic findings between patients with complete and incomplete traumatic spinal cord injuries

Objective: To compare urodynamic findings between patients with complete and incomplete traumatic spinal cord injuries (SCI) and to determine whether it is important to test with urodynamic study in patients with incomplete SCI. Design: Retrospective study Setting: Ankara Physical Medicine and Rehabilitation Training and Research Hospital, Ankara, Turkey Participants: A total of 66 patients with 36 complete and 30 incomplete traumatic SCI were included in the study, from July 2012 to September 2014. Interventions: Urodynamic study Outcome Measures: Maximum cystometric capacity (MCC) , vesicle pressure at MCC, detrusor function (detrusor overactivity or not), bladder complience, bladder storage and emptying disorders, post-void residual volume (PVR) and bladder emptying method were recorded. It was also recorded whether the patients used anticholinergic drugs before urodynamic study. Results: In urodynamic findings MCC, vesicle pressure at MCC, PVR, there was no statistically significant difference between complete and incomplete traumatic SCI patients. Also there was no statistically significant difference in low-compliance of detrusor frequency and bladder storage and emptying disorder frequency. Clean intermittent catheterization (CIC) was the most commonly recommended method after urodynamic studies in both groups of patients with SCI. Conclusions: In urodynamic study findings, there was no statistical difference between complete and incomplete traumatic SCI patients. The present study demonstrate that even if patients with incomplete SCI appear to be functionally better than the patients with complete SCI, urodynamic studies should still be performed in patients with incomplete SCI to identify bladder characteristics and to identify appropriate treatment.

Bladder Neuromodulation in Acute Spinal Cord Injury via Transcutaneous Tibial Nerve Stimulation: Cystometrogram and Autonomic Nervous System Evidence From a Randomized Control Pilot Trial

Aim: Percutaneous tibial nerve stimulation is used to decrease incontinence in chronic neurogenic bladder. We report the findings from a subset of patients in a randomized control trial of transcutaneous tibial nerve stimulation (TTNS) for bladder neuromodulation in acute spinal cord injury (SCI) in whom heart rate variability (HRV) was recorded before and after cystometrogram (CMG). The aim was to correlate autonomic nervous system (ANS) changes associated with the CMG changes after the trial using HRV analyses.

Methods: The study was a double-blinded sham-controlled 2-week trial with consecutive acute SCI patients admitted for inpatient rehabilitation, randomized to TTNS vs. control sham stimulation. Pre- and Post- trial CMG were performed with concurrent 5-min HRV recordings with empty bladder and during filling. Primary outcomes were changes with CMG between/within groups and associations to the HRV findings.

Results: There were 10 subjects in the TTNS group and 6 in the control group. Pre-trial baseline subject characteristics, blood pressures (BPs), and CMG were similar between groups. In both groups, the pre-trial systolic BP increased during filling CMG. After the trial, the control group had significantly increased detrusor pressure and counts of detrusor-sphincter dyssynergia on CMG, not seen in the TTNS group. Also, the control group did not maintain rising BP post-trial, which was observed pre-trial and remained in the TTNS group post-trial. HRV was able to detect a difference in the ANS response to bladder filling between groups. Post-trial HRV was significant for markers of overall increased parasympathetic nervous system activity during filling in the controls, not seen in the TTNS group.

Conclusion: Preliminary evidence suggests that TTNS in acute SCI is able to achieve bladder neuromodulation via modulation of ANS functions.

Clinical Trial Registration:clinicaltrials.gov, NCT02573402.

Testing of a New Portable Device for Dynamic Bladder Pressure Monitoring

OBJECTIVE

To develop a portable dynamic bladder pressure monitoring device for facilitating the monitoring of bladder detrusor pressure in patients with neurogenic bladder (NB) caused by spinal cord injury and further compared the effect with traditional urodynamics devices.

METHODS

Portable dynamic bladder pressure monitoring device was implemented by software and hardware. The hardware was mainly composed of seven parts, such as micro liquid pressure sensor, electric bridge amplifying circuit, clock module, SD card storage circuit, liquid crystal display circuit, touch circuit, controller circuit and so on. The main program of the software included system initialization, data acquisition, storage, display, alarm, etc. A total of 45 patients with neurogenic bladder caused by spinal cord injury were enrolled in the study. Detrusor pressure was measured with the portable device and traditional urodynamics device.

RESULTS

The test-retest reliability of the portable device was modest in two times test (intra-class correlation coefficient (ICC) = 0.852), no significant difference was found in the results of volume perfusion evaluation between our device and conventional urodynamic (each P > 0.05).

CONCLUSION

The portable dynamic bladder pressure monitoring device is conducive to the dynamic monitoring of bladder pressure in patients with neurogenic bladder caused by spinal cord injury.

Recommendations for urological follow-up of patients with neurogenic bladder secondary to spinal cord injury

PURPOSE

To review currently available guidelines and recommendations regarding urological follow-up of patients after spinal cord injury (SCI) and present an evidence-based summary to support clinicians in their clinical practice.

METHODS

Maximum data were collected according to different methods, including searches with multiple and specific keywords, reference checks, gray literature searches (congress reports, working papers, statement documents), and browsing-related Web site access. Obtained data were analyzed with the modified version of the Oxford grading system for recommendations using levels of evidence (LE) and grades of recommendation (GR).

RESULTS

Different surveillance strategies exist, but there is no consensus among authors and organizations. As a result, practice patterns vary around the world. The present review indicates that proper urological follow-up of SCI patients should consist of medical history (LE 1-4, GR B-C), clinical examination (LE 4, GR C), renal laboratory tests (LE 1-3, GR B), imaging surveillance of the upper urinary tract (LE 1-3, GR A-B), urodynamic study (LE 2-4, GR B-C), and cystoscopy/cytology (LE 1-4, GR D). Clinicians agree that SCI patients should be followed up regularly with an individually tailored approach. A 1-year follow-up schedule seems reasonable in SCI patients without additional risk factors of renal deterioration (LE 3-4, GR C). In those who manifest risk factors, report changes in bladder behavior, or present with already developed complications of neurogenic bladder dysfunction, follow-up plans should be modified with more frequent checkups (LE 4, GR C). Urodynamic study should be repeated and considered as a routine monitoring strategy.

CONCLUSION

Individuals with neurogenic lower urinary tract dysfunction are at increased risk of multiple complications. Nevertheless, proper follow-up after SCI improves the prognosis for these patients and their quality of life.

[Temporary urethral stents ALLIUM BUS "BULBAR URETHRAL STENT" for the treatment of detrusor sphincter dyssynergia]

INTRODUCTION

The temporary prosthetic sphincterotomy is a possible treatment for neurologic detrusor sphincter dyssynergia (DSD). The purpose of the study was to verify the feasibility and effectiveness of the urethral stent (US) Temporary ALLIUM BUS "BULBAR URETHRAL STENT".

PATIENTS AND METHODS

A prospective, non-comparative, single-center starting in 2015 was conducted. Were included patients over 18 years, with a neurologic DSD proved urodynamically for which medical treatment was not indicated or failed. The primary endpoint was the percentage of patients who had a voiding method considered as improved or much improved at 1 month and the feasibility of the procedure.

RESULTS

From January to June 2015, 7 patients, (mean age 47.9 years [24-76 years]) were prospectively enrolled. One patient was lost to sight at one month and therefore excluded. The median follow-up was 8.1 months (1-10 months). All procedures were technically successful. At 1 month, there were 57% of grade 2 complications (Clavien-Dindo), 1 of 6 patients had a migration of the US. At one month, quality of life and the urologic situation was considered good in 3 patients, unchanged in 2 patients and decreased in 1 patient. The study was stopped after the inclusion of seven patients. At the date of the latest news, 5 of 6 patients had a migrated or an explanted US.

CONCLUSION

The temporary urethral stent ALLIUM BUS does not seem to be a possible surgical alternative for the treatment of detrusor sphincter dyssynergia.

LEVEL OF EVIDENCE

4.

Urinary tract infections, urologic surgery, and renal dysfunction in a contemporary cohort of traumatic spinal cord injured patients

AIMS

The objective of this study was to measure the incidence of urinary tract infections (UTIs), urologic reconstruction/urinary diversion, and renal dysfunction after a traumatic spinal cord injury (TSCI).

METHODS

Retrospective cohort study using administrative data from Ontario, Canada. All incident adult TSCI patients (2002-2013) admitted to a rehabilitation center were included. The impact of lesion level on each outcome was assessed. The rate of outcomes was further compared to an age and sex matched sample from the general population.

RESULTS

A total of 2,023 incident TSCI patients were identified (median follow-up of 4.8 years). Most patients (73%) were male and median age was 50 years. Lesion level included cervical (39%), thoracolumbar (44%), and unknown (17%). The incidence of serious UTIs (requiring emergency room visit or hospital admission) was 40%. Thoracolumbar lesion TSCI patients had significantly greater risk of serious UTIs (HR 1.3, 95%CI 1.1-1.7, P < 0.01) compared to those with a cervical lesion. Urologic reconstruction/urinary diversion was carried out on 2.4% of patients. New onset renal dysfunction was identified in 4.2% (84) TSCI patients. The rate ratios for serious UTIs (10.59, 95%CI 8.71-12.89), urologic reconstruction/urinary diversion (6.48, 95%CI 3.07-13.68), and renal dysfunction (2.55, 95%CI 1.70-3.83) were significantly increased among TSCI patients compared to matched controls.

CONCLUSIONS

Urologic disease is still an important source of morbidity for contemporary TSCI patients, and is more common compared to the general population. Neurourol. Urodynam. 36:640-647, 2017. © 2016 Wiley Periodicals, Inc.

Urological Surveillance and Medical Complications after Spinal Cord Injury in the United States

OBJECTIVE

To evaluate the national patterns of urologic follow up after spinal cord injury (SCI) and the occurrence and predictors of urological complications.

MATERIALS AND METHODS

This retrospective cohort study used a 5% sample of Medicare data 2007-2010. The minimum adequate urologic surveillance was defined as a urologist visit, serum creatinine evaluation, and upper urinary tract imaging study within the 2-year period. Patients were classified to their most severe complication in a multivariate linear regression model.

RESULTS

Among the 7162 patients with SCI, the majority were functionally paraplegic (82.4%) and Caucasian (80.9%). Among them, 4.9% received no screening studies over the 2-year period; 70.5% received some, but not all screening; and 24.6% received all three screening tests. Patients traveled a mean of 21.3 ± 27.5 miles to receive care. A total of 35.7% of patients saw a urologist during the 2-year period; 48.6% had some form of upper tract evaluation, with the majority being computed tomography scans; and 90.7% had serum creatinine evaluation. Of all patients, 35.8% had a minor complication during their 2-year follow up, 17.1% had a moderate complication, and 8.0% had a severe complication. In our prediction model, patient factors that correlated with increased complications included male gender, African American race, paraplegia, and receiving some or all of the neurogenic bladder recommended screening. Patients' distance of travel to their treating physician (urologist or physiatrist) did not affect the rate of complications.

CONCLUSION

Urological complications are common in patients with SCI who receive Medicare. Most of these patients with SCI are not receiving even the minimum recommended surveillance for these urological complications.

An unresolved relationship: the relationship between lesion severity and neurogenic bladder in patients with spinal cord injury

OBJECTIVES

We aimed to investigate the relationship between the severity of the spinal lesion and urodynamic findings, bladder drainage method at discharge, and incidence of renal calculi in patients with spinal cord injury (SCI). STUDYDESIGN: Retrospective.

SETTING

In-patient rehabilitation unit of a tertiary research hospital.

METHODS

A total of 131 patients who were admitted to our clinic with a diagnosis of SCI and placed into a rehabilitation program were included in the study. The severity of the lesion was determined according to the American Spinal Injury Association Impairment Scale (AIS). We evaluated the relationship between the severity of the lesion and the detrusor hyperactivity and compliance as determined by urodynamic investigation, the bladder drainage method used at discharge, and the renal calculi rate as determined by ultrasonography.

RESULTS

While no difference was found between the patients with complete and incomplete injuries in terms of age, sex, disease duration, detrusor hyperactivity and compliance, the bladder drainage method was found to show a significant change according to the severity of the lesion. None of the patients were found to have hydronephrosis and the rate of renal calculi showed no statistically significant difference according to the severity of the lesion.

CONCLUSIONS

We concluded that urodynamic examination is required in each patient with SCI as the severity of the lesion is not sufficient to determine the bladder type, and patients with complete and incomplete injuries should be monitored with the same sensitivity in terms of complications.

Dysfunction of lower urinary tract in patients with spinal cord injury

Over the past 50 years, the mortality for urorenal cause in patients with spinal cord injuries (SCI) has decreased from over 75% to 2.3%, as a result of dramatic improvements in the diagnosis and management of lower urinary tract dysfunction (LUTD). The aims of this chapter are to assess the physiopathology of upper and lower motor neuron lesion on bladder and sphincter function after SCI, to give an overview of required clinical and instrumental examination and to discuss treatment modalities. Videourodynamic examination plays a key role in the assessment and follow-up of LUTD in SCI patients, in conjunction with neurophysiological and radiological examinations. The cornerstone of bladder management in SCI is clean intermittent self-catheterization, but often other treatments are needed to achieve full continence, to reduce infections and stone formation, to protect the upper urinary tract from excessive bladder pressure, and to prevent chronic renal failure. Treatments may be pharmacologic (i.e., anticholinergic drugs and botulinum toxin) or surgical (by enterocystoplasty or urinary diversion). In selected cases, neuromodulation and sacral root stimulation can be used to reduce detrusor overactivity and empty the bladder. Management of LUTD in SCI patients requires a deep knowledge of spinal cord medicine and functioning of patients with neurologic disability.

Acupuncture for neurogenic bladder due to spinal cord injury: a systematic review protocol

INTRODUCTION

Neurogenic bladder is one of the most common complications following spinal cord injury (SCI). In China, acupuncture therapy is a common treatment for neurogenic bladder due to SCI, but its effects and safety remain uncertain. A protocol is described for a systematic review to investigate the beneficial effects and safety of acupuncture for neurogenic bladder due to SCI.

METHODS AND ANALYSIS

Eight databases will be searched from their inception: the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, Embase, the China National Knowledge Infrastructure (CNKI), the VIP database, the Wanfang database, the China Doctoral Dissertations Full-text Database (CDFD) and the China Master's Theses Full-text Database (CMFD). Any clinical randomised controlled trials (RCTs) and the first period of randomised cross-over studies related to acupuncture for neurogenic bladder due to SCI will be included. Outcomes will include change in urinary symptoms, urodynamic tests, clinical assessment and quality of life (QoL). The incidence of adverse events will be assessed as the safety outcome. Study selection, data extraction and quality assessment will be performed independently by two reviewers. Assessment of risk of bias, data synthesis and subgroup analysis will be carried out using Review Manager software.

ETHICS AND DISSEMINATION

Ethics approval is not required as this is a protocol for a systematic review. The findings of this systematic review will be disseminated via peer-reviewed publications and conference presentations.

TRIAL REGISTRATION NUMBER

PROSPERO (CRD42014010448).

Urodynamic profile of patients with neurogenic bladder following non-traumatic myelopathies

Objective:

To observe the urodynamic profile of the patients following non-traumatic myelopathies (NTMs) with neurogenic bladder.

Setting:

Neurological rehabilitation department of university tertiary research hospital.

Materials and Methods:

Seventy-nine patients (44 men) with monophasic NTM, with the age range 8-65 years (31.0 ± 16.0 years), were admitted for inpatients’ rehabilitation. Length of stay in rehabilitation ranged from 6 to 120 days (32.0 ± 24.8 days). Fifty-six patients (70.9%) had spinal lesion above D10, 17 had lesion between D10 and L2 (21.5%), and 6 (7.6%) had cauda equina syndrome. All patients had neurogenic bladder with urinary complaints. Urodynamic study (UDS) was performed in all patients.

Results:

UDS showed 71.4% patients (40/56) had neurogenic detrusor overactivity (NDO) with or without sphincter dyssynergy (DSD) with lesion above D10; only 52.9% patients (9/17) had NDO with or without DSD detrusor with lesion between D10 and L2; and majority (5/6 patients) had underactive detrusor in the cauda equina group. Bladder management was based on the UDS findings. No significant correlation was found (P > 0.05) between detrusor behavior and the level, severity (ASIA Impairment Scale) of spinal injury, or gender using chi-square test.

Conclusions:

Neurogenic bladder following NTM was observed in all patients. UDS suggested predominantly NDO in lesions above D10 and mixed pattern in between D10 and L2 lesions. No significant correlation was found between detrusor behavior and the level or severity of NTM in the study.

Urinary tract management in patients with incomplete cervical cord injury during the recovery phase

PURPOSE

For patients with incomplete cervical cord injuries, appropriate urinary management based on an assessment of voiding and storage function of the bladder is necessary for a better prognosis, especially during the recovery phase. In our review of medical records of such patients, we identified factors related to recovery of bladder function and parameters for predicting prognosis.

METHODS

In this study, we included 234 patients with incomplete cervical cord injuries admitted to Kanagawa Rehabilitation Hospital. Their medical records were retrospectively reviewed for various parameters related to final urinary management measures at discharge. Parameters included age, severity of paralysis, bladder function over time, urinary sensation and cystometry results.

RESULTS

Patients were managed using urethral catheterization, suprapubic cystostomy, clean intermittent catheterization (CIC) by oneself or care givers, CIC with occasional spontaneous voiding, or spontaneous voiding alone. Bladder function improved in majority of the patients during hospitalization. The severity of paralysis and urinary sensation are predictive parameters for improvement in voiding function. In patients who were admitted with catheterization but were discharged with spontaneous voiding, the period for recovery was 85.2 days on average (range 16-142 days).

CONCLUSIONS

Selection of urinary management measures for patients with incomplete cervical cord injuries can be performed adequately by considering the severity of paralysis and urinary sensation.

Acute spinal cord injury--do ambulatory patients need urodynamic investigations?

PURPOSE

We compared the urodynamic parameters of ambulatory vs nonambulatory acute spinal cord injured patients.

MATERIALS AND METHODS

A total of 27 women and 33 men (mean age 58 years) with neurogenic lower urinary tract dysfunction due to acute spinal cord injury (duration of injury less than 40 days) were prospectively evaluated. The patients were dichotomized according to the mobility for moderate distances subscale of the SCIM (Spinal Cord Independence Measure) version III into ambulatory (score of 3 or greater) and nonambulatory (score less than 3). Videourodynamic parameters including maximum detrusor pressure during the storage phase, bladder compliance, detrusor overactivity, detrusor external sphincter dyssynergia and vesicoureterorenal reflux were compared between the groups.

RESULTS

Of the 60 patients with acute spinal cord injury 17 were ambulatory and 43 were nonambulatory. Mean ± SD duration of injury at urodynamic investigation was 30 ± 8 days. The lesion level was cervical in 14 patients, thoracic in 28 and lumbar/sacral in 18. Comparing unfavorable urodynamic parameters, no significant differences were found between ambulatory vs nonambulatory patients in terms of a high pressure system during the storage phase (29% vs 33%, p = 0.81), a low compliance bladder (12% vs 7%, p = 0.54), detrusor overactivity (24% vs 47%, p = 0.1), detrusor external sphincter dyssynergia (18% vs 21%, p = 0.77) and vesicoureterorenal reflux (0% vs 5%, p = 0.36).

CONCLUSIONS

Ambulatory and nonambulatory patients with acute spinal cord injury have a similar risk of unfavorable urodynamic measures. Thus, we strongly recommend the same neurourological assessment including urodynamic investigations in all acute spinal cord injury patients independent of the ability to walk.

Managing the urinary tract in spinal cord injury

This review sets out to provide an overview of the author's approach to the management of the urinary tract in the patient who has suffered from an injury to their spinal cord. Emphasis is given to the need to understand the fundamental pathophysiological patterns that are seen with injuries that involve the sacral segments of the cord (the conus) and those that spare the conus but interrupt communication between the sacral parasympathetic and somatic centers and the brain (supraconal lesions). The importance of patient participation in management decisions is highlighted by considering the different ways in which the urinary tract can be managed and how the clinician needs to try to meet patient expectations and requirements while establishing safe urological management. Finally, consideration is given to the importance of establishing an appropriate follow up regime and managing urinary tract complications effectively.

Neurogenic detrusor overactivity: comparison between complete and incomplete spinal cord injury patients

AIMS

To compare leak-point intravesical pressure and cystometric capacity in complete and incomplete spinal cord injury (SCI) patients with neurogenic detrusor overactivity (NDO).

METHODS

Retrospective study of filling cystometry at non-physiological filling rate in 80 SCI patients at rehabilitation or annual check-up using Dantec Etude urodynamic machine.

RESULTS

Fifty neurologically complete (ASIA (American Spinal Injury Association) A) and 30 incomplete (ASIA B-E) were diagnosed with neurogenic detrusor overactivity, all with suprasacral level of injury. Mean Pves leak-point pressure (Pves LPP) at cystometric capacity for ASIA A group was 79 +/- 30 cmH(2)O (range 26-140) and mean Pves LPP for ASIA B-E group was 70 +/- 29 cmH(2)O (range 25-130). There was no significant difference between groups (P = 0.234). Mean CC (cystometric capacity) for ASIA A group was 239 +/- 107 ml (range 47-526) and mean CC for ASIA B-E group was 227 +/- 125 ml (range 42-500). Again, no significant difference was found (P = 0.655).

CONCLUSIONS

No difference in cystometric capacity and intravesical leak point pressure at terminal detrusor overactivity was shown between complete and incomplete spinal cord injury patients in our survey, that is, represented findings are equally unfavorable for both groups. Incomplete SCI patients with NDO should be tested with cystometry and observed with same caution as we proceed in complete SCI patients.

Clinical prognostic factors for bladder function recovery of patients with spinal cord and cauda equina lesions

OBJECTIVE

To investigate the relationship between lesion severity and other clinical factors and bladder function recovery.

PATIENTS AND METHODS

The charts of 269 patients with traumatic and non traumatic spinal cord lesion (SCL) were reviewed and the following information was recorded: lesion to admission time, injury variables, length of stay and neurological status. At five months, urological outcome was assessed by voiding modalities, and urodynamics according to International Continence Society. Logistic approach with univariate and multivariate analysis.

RESULTS

Both ASIA impairment at admission and age were significantly correlated with bladder function outcome. None of the patients with ASIA A impairment at admission reached volitional voiding at five months. ASIA B patients had a 90% lower probability of achieving good bladder control and ASIA C ones a 65% lower than ASIA D patients (p < 0.05). Older patients had a significant lower probability (60%) of achieving volitional voiding than younger ones (p < 0.05). Of the 121 patients with ASIA D impairment at discharge only 78 voided spontaneously and showed a higher frequency of cervical lesions and a lower frequency of detrusor-external sphincter dyssynergia.

DISCUSSION AND CONCLUSION

Bladder recovery in patients with complete SCL is limited. ASIA B patients showed a better neurological recovery and, concurrently, better bladder function recovery than ASIA A patients, thus demonstrating the importance of sensation preservation for recovery. Younger patients show better bladder recovery than older ones, probably because of different efficiency of spinal cord plasticity. Finally, patients with good neurological recovery may not achieve volitional voiding. Patients with bladder function recovery show a higher frequency of central cord and Brown-Sequard syndromes (with better prognosis) and a lower frequency of detrusor-sphincter dyssynergia.