Neurogenic Bowel Dysfunction in Patients with Neurogenic Bladder

A Meta-Analysis on the Efficacy and Safety of Sacral Neuromodulation for Neurogenic Bladder or Bowel Dysfunction

BACKGROUND

The aim of this work was to evaluate the efficacy and safety of sacral neuromodulation (SNM) in the treatment of neurogenic bladder (NB) and neurogenic bowel dysfunction (NBD).

MATERIALS AND METHODS

A systematic literature search was conducted using PubMed and Web of Science up to August 2024, focusing on studies related to SNM treatment for NB or NBD. After assessing the quality of the studies, data were extracted and analyzed using Review Manager 5.3 (Cochrane Collaboration, Oxford, UK).

RESULTS

A total of 15 studies involving 573 patients were included. After SNM treatment, the patients showed significant improvements in key outcome measures, including voiding frequency per 24 hours (weighted mean difference [WMD] -4.08; 95% CI -6.80, -1.35; p = 0.003), single voiding volume (WMD 123.60; 95% CI 93.17, 154.03; p < 0.001), number of leakage episodes per 24 hours (WMD -4.27; 95% CI -5.79, -2.74; p < 0.001), number of nocturia (WMD -2.48; 95% CI -2.62, -2.35; p < 0.001), clean intermittent self-catheterization per 24 hours (WMD -2.35; 95% CI -2.98, -1.71; p < 0.001), bladder compliance (WMD 9.09; 95% CI 2.31, 15.87; p = 0.009), maximum detrusor pressure during storage phase (WMD -14.76; 95% CI -18.63, -10.88; p < 0.001), maximum urine flow rate (WMD 6.50; 95% CI 4.21, 8.80; p < 0.001), maximum bladder capacity (WMD 66.28; 95% CI 2.83, 129.73; p = 0.04), Wexner score (WMD -9.98; 95% CI -13.65, -6.31; p < 0.001), and NBD score (WMD -6.31; 95% CI -6.89, -5.73; p < 0.001).

CONCLUSION

These results indicated that SNM was effective and safe in treating NB or NBD.

Importance of Regular Examination and Follow-up in Pediatric Patients with Neurogenic Bladder: 24-Month Follow-up Study Using a Japanese Health Insurance Database

INTRODUCTION

Data on the long-term management of neurogenic bladder (NGB) are scarce. We evaluated the current status of NGB management in Japanese children over 24-month follow-up using the JMDC database.

METHODS

In this descriptive, observational, retrospective cohort study, patients (≤ 17 years) with NGB were included. Patient characteristics and their management status were investigated. A multivariate analysis evaluating the potential risk factors for the development of urinary tract infection (UTI) was performed. The diagnosis of spina bifida, demographics, baseline comorbidities, and early use of clean intermittent catheterization (CIC) and/or overactive bladder (OAB) drugs were used as independent variables.

RESULTS

Of 883 eligible children, 39.3% had spina bifida. Over 12/24-month post-index periods, renal urinary tract ultrasound and urinalysis were performed at least once in > 35%/> 45% patients, respectively, while specific tests (urodynamics, cystourethrography, scintigraphy) were performed in substantially fewer (< 11%/< 13%) patients. Over 24 months, 21.5% patients used OAB medications (mostly anticholinergics) and 10.8% underwent CIC, alone or with medications; 1.2% patients underwent surgery. Lower UTI (23.3%), urinary incontinence (9.7%), and hydronephrosis (7.0%) were the most common incident complications. Multivariate analysis evaluating risk factors for UTI showed significantly higher odds ratios with point estimates of ≥ 2 for CIC (5.70), presence of spina bifida (2.86), and constipation (2.07). Overall, urodynamic assessments were inadequately performed.

CONCLUSION

Patients with use of CIC and/or having spina bifida and constipation had a higher risk of UTI, suggesting the need for careful follow-up. More guideline-compliant and diligent patient management is necessary in Japanese children with NGB.

Effect of neurogenic bowel dysfunction symptoms on quality of life after a spinal cord injury

BACKGROUND

Neurogenic bowel dysfunction (NBD) is a common problem among people with spinal injury; management of bowel dysfunction and related problems are considered significant factors in daily life after injury. But despite the critical relevance of bowel dysfunction in the daily life of SCI survivors, there have been few published studies on the management of NBD. So, this study aimed to describe the bowel programmers utilized by people with SCI in China and the impact of bowel dysfunction on the quality of life (QoL).

DESIGN

A cross-sectional online survey.

SETTING

Rehabilitation Medicine Department of Wuhan's Tongji Hospital.

PARTICIPANTS

SCI patients who had been diagnosed with neurogenic bowel dysfunction and who were receiving regular medical monitoring at the rehabilitation medicine department were invited to participate in our study.

OUTCOME MEASURES

A neurogenic bowel dysfunction (NBD) score is a questionnaire developed to evaluate the severity of neurogenic bowel dysfunction. A Short Form-12 (SF-12) was designed to measure the quality of life in people with SCI. Demographic and medical status information was extracted from their medical records.

RESULTS

The two questionnaires were sent to 413 SCI patients. Two hundred ninety-four subjects (43.1 ± 14.5 years of age; men, 71.8%) responded. Most of the respondents performed their bowel movement daily 153 (52.0%), a defecation time was 31-60 min among 70 (23.8%) of them, 149 (50.7%) used medication (drops or liquid) to treat constipation, and 169 (57.5%) used digital stimulation more than once per week to boost the bowel evacuation. This study found a significant association between the QoL score and the time used for each defecation, autonomic dysreflexia (AD) symptoms, taking medication to treat fecal incontinence, using digital stimulation, having uncontrollable flatus and perianal skin problems.

CONCLUSION

Management of bowel dysfunction is complex and associated with QoL in people with SCI. Items of the NBD questionnaire that greatly deteriorated the QoL were time in one defecation > 60 min, symptoms of AD during or before defecation, taking medication (drops or liquid), and using digital stimulation. Dealing with those problems can improve the life quality of spinal cord injury survivors.

Neurogenic Bowel Dysfunction: The Impact of the Central Nervous System in Constipation and Fecal Incontinence

Spinal cord injury and neurogenic bowel dysfunction (NBD) are life-changing events for affected patients. The clinical manifestations of NBD vary depending on the level and severity of the spinal cord lesion. Managing patients with NBD can be complicated by comorbidities, such as immobility, bladder dysfunction, progressive neurologic decline, psychological factors, loss of independence, and social withdrawal, and ideally involves a multimodal, multidisciplinary approach. Evaluation and management should be individualized, depending on the residual neurologic capabilities of the patient and their predominant gastrointestinal symptoms, and commonly involves lifestyle modifications, physical therapy, laxative medications, and surgical interventions.

Triboelectric Nanogenerators for Therapeutic Electrical Stimulation

Current solutions developed for the purpose of in and on body (IOB) electrical stimulation (ES) lack autonomous qualities necessary for comfortable, practical, and self-dependent use. Consequently, recent focus has been placed on developing self-powered IOB therapeutic devices capable of generating therapeutic ES for human use. With the recent invention of the triboelectric nanogenerator (TENG), harnessing passive human biomechanical energy to develop self-powered systems has allowed for the introduction of novel therapeutic ES solutions. TENGs are especially effective at providing ES for IOB therapeutic systems given their bioconformability, low cost, simple manufacturability, and self-powering capabilities. Due to the key role of naturally induced electrical signals in many physiological functions, TENG-induced ES holds promise to provide a novel paradigm in therapeutic interventions. The aim here is to detail research on IOB TENG devices applied for ES-based therapy in the fields of regenerative medicine, neurology, rehabilitation, and pharmaceutical engineering. Furthermore, considering TENG-produced ES can be measured for sensing applications, this technology is paving the way to provide a fully autonomous personalized healthcare system, capable of IOB energy generation, sensing, and therapeutic intervention. Considering these grounds, it seems highly relevant to review TENG-ES research and applications, as they could constitute the foundation and future of personalized healthcare.

Sacral Neuromodulation in Patients With Neurogenic Lower Urinary Tract Dysfunction: A Multicenter Retrospective Study From China

OBJECTIVES

This retrospective study aimed to determine the effectiveness of sacral neuromodulation (SNM) on neurogenic lower urinary tract dysfunction (NLUTD) and analyze the predictive factors.

MATERIALS AND METHODS

From January 2012 to January 2020, 152 subjects with NLUTD from four medical centers in China received SNM test stimulation. Subjects were assessed via bladder diaries, postvoid residual volumes (PRVs) and neurogenic bowel dysfunction (NBD) scores before and during the testing period. Patients who showed a minimum 50% improvement in symptoms through the SNM test phase were eligible for permanent SNM implantation.

RESULTS

The pooled success rate for chronic urinary retention was 31.0% (40/129), which was significantly lower (p < 0.05) than the rates for frequency-urgency (64.8%, 59/91), urinary incontinence (65.2%, 30/46), and NBD score (61.7%, 82/133). The results of the risk factor analysis showed that the urinary storage symptom was a statistically significant positive predictor (p = 0.001).

CONCLUSIONS

In conclusion, SNM is an effective and reliable method for treating NLUTD, especially in patients with urinary storage symptoms. Although not all of the symptoms in every patient can be resolve, SNM still might be a superior choice together with other treatment procedures.

Bowel Emptying Methods Used by German Residents Living With Spina Bifida

PURPOSE

The purpose of this study was to describe and analyze methods of bowel emptying among Germans living with spina bifida. We also analyzed relationships between age, sex, level of spinal bifida anomaly, and methods of bowel elimination.

DESIGN

A quantitative, descriptive study.

SUBJECTS AND SETTING

The sample comprised 88 persons (56 women and 32 men) residing anywhere in the Federal Republic of Germany. Their mean age was 17.5 years (SD 13.64 years), range 0 to 55 years.

METHODS

Data were collected through an online survey questionnaire developed for the urological follow-up protocol for patients with spina bifida. Parents completed the questionnaire for participants younger than 18 years.

RESULTS

Twenty participants (22.7%) reported normal defecation and 68 (77.3%) reported neurogenic bowel dysfunction requiring regular bowel management. Participants requiring bowel management predominately used rectal irrigation (40.9%) and digital rectal stimulation (27.3%) to enhance bowel evacuation. Age emerged as the only factor related to the bowel management techniques. Younger participants (≤20 years) were more likely to use rectal irrigation for bowel evacuation (P = .001, Fisher's exact test), whereas older respondents (≥21 years) were more likely to use digital rectal stimulation (P = .015, Fisher's exact test). Analysis revealed no differences in methods of bowel evacuation based on sex or level of spina bifida anomaly (cervical, thoracic, lumbar, or sacral).

CONCLUSIONS

Rectal irrigation was the most common method for bowel evacuation. Participants were less likely to employ potentially effective and more conservative measures for intestinal emptying, such as toilet training/timed evacuation associated with Valsalva maneuvers, abdominal press, abdominal massage, and digital rectal stimulation. Additional comparative studies with more participants and other countries with intestinal emptying methods are needed to better understand the needs of individuals with spina bifida and their families and to improve the health-related quality of life of these people.

Grief and Loss Among Veterans With Spinal Cord Injury: A Qualitative Study

PURPOSE

The objective of this study was to understand veteran perspectives of grief/loss associated with their spinal cord injury (SCI).

DESIGN/METHODS

Qualitative descriptive design using semistructured interviews with veterans with SCI (n = 15) was performed using interview questions informed by the literature. Analysis was conducted using a deductive/inductive approach.

RESULTS

The 15 participants' mean age was 64 years; six had paraplegia, eight had tetraplegia, one had unknown level of injury, six were ambulatory, and nine were not ambulatory. The grief/loss experience was individual and constant, consisting of seven phases: experiencing shock, releasing emotion, withdrawing, focusing on losses, problem solving, realizing strength and motivation, and accepting a new life. Veteran coping strategies used in each phase of the grief experience were also identified, as well as triggers that increased or decreased the grief/loss experience.

CONCLUSIONS/CLINICAL RELEVANCE

A better understanding of veterans living with SCI grief experience, coping strategies, and triggering events can help healthcare providers support veterans with SCI.

Effect of sacral neuromodulation on bowel dysfunction in patients with neurogenic bladder

AIM

The aim of this retrospective study was to evaluate the clinical effect of sacral neuromodulation (SNM) on bowel dysfunction in patients with neurogenic bladder using the neurogenic bowel dysfunction (NBD) score.

METHOD

Between July 2012 and July 2019, 41 patients with both neurogenic bladder and bowel dysfunction underwent permanent SNM implantation. The NBD score was used to evaluate the bowel symptoms before the testing phase and at follow-up. The first follow-up was at the time of discharge after permanent implantation. The second follow-up was conducted by telephone after discharge.

RESULTS

The mean NBD score before the testing phase was 11.0 ± 5.83, whilst it significantly decreased to 5.2 ± 5.32 (n = 41, P < 0.05) at the first follow-up (32 ± 3.9 days). Before the testing phase, there were 9 patients with very minor NBD, 10 with minor NBD, 13 with moderate NBD and 9 with severe NBD. At the first follow-up, there were 26 patients with very minor NBD, 7 with minor NBD, 4 with moderate NBD and 4 with severe NBD (P < 0.05). Twenty-six patients were interviewed in the long-term follow-up (34 ± 30.9 months). The NBD score in these 26 patients was 5.6 ± 5.18, which was not significantly different from the NBD score (5.5 ± 5.33) at the first follow-up (n = 26, P > 0.05).

CONCLUSION

SNM facilitates a significant reduction in NBD score in patients with neurogenic bladder and bowel dysfunction. The improvement in NBD symptoms can also be used as a future indicator to determine the clinical efficacy of permanent SNM implantation in the treatment of neurogenic bladder.

Create a predictive model for neurogenic bladder patients: upper urinary tract damage predictive nomogram

Objective: To create a nomogram to evaluate the risk of upper urinary tract damage (UUTD) in patients with neurogenic bladder (NGB) Methods: A retrospective analysis was conducted on 301 patients with NGB who were admitted to certain hospitals. Data collected included clinical symptoms, patients' characteristics, laboratory parameters, imaging findings, and urodynamic parameters. The least absolute shrinkage and selection operator（LASSO）regression model was used to optimise the selection of predictors. Multivariate logistic regression analysis was performed to develop a UUTD risk predictive model. Validation was performed by bootstrap. Results: The predictors included in the nomogram included sex, duration of disease, history of UTI, bladder compliance, and fecal incontinence. The model presented good discrimination with a C-index value of 0.796 (95% confidence interval: 0.74896-0.84304) and good calibration. The C-index value of the interval validation was 0.7872112. The results of decision curve analysis (DCA) demonstrated that the UUTD-risk predictive nomogram was clinically useful. Conclusion: The nomogram incorporating the sex, duration of disease, history of UTI, bladder compliance, and fecal incontinence could be an important tool of UUTD risk prediction in NGB patients.

A descriptive model for a multidisciplinary unit for colorectal and pelvic malformations

INTRODUCTION

Patients with anorectal malformations (ARM), Hirschsprung disease (HD), and colonic motility disorders often require care from specialists across a variety of fields, including colorectal surgery, urology, gynecology, and GI motility. We sought to describe the process of creating a collaborative process for the care of these complex patients.

METHODS

We developed a model of a devoted center for these conditions that includes physicians, psychologists, social workers, nurses, and advanced practice nurses. Our weekly planning strategy includes a meeting with representatives of all specialties to review all patients prior to evaluation in our multidisciplinary clinic, followed by combined exams under anesthesia or surgical intervention as needed.

RESULTS

There are 31 people working directly in the Center at present. From the Center's start in 2014 until 2017, 1258 patients were cared for from all 50 United States and 62 countries. 360 patients had an ARM (110 had a cloacal malformation, 11 had cloacal exstrophy), 223 presented with HD, 71 had a spinal malformation or injury causing neurogenic bowel, 321 had severe functional constipation or colonic dysmotility, and 162 had other diagnoses including familial polyposis, Crohn's disease, or ulcerative colitis. We have had 170 multidisciplinary meetings, 170 multispecialty outpatient, and 52 nurse practitioner clinics. In our bowel management program we have seen a total of 514 patients in 36 sessions.

CONCLUSION

This is the first report describing the design of a multidisciplinary team approach for patients with colorectal and complex pelvic malformations. We found that approaching these patients in a collaborative way allows for combined medical and surgical decisions with many providers simultaneously, facilitates therapy, and can potentially improve patient outcomes. We hope that this model will help establish new-devoted centers in other locations to encourage centralized care for these rare malformations.

LEVEL OF EVIDENCE

IV.

Partners in Crime: NGF and BDNF in Visceral Dysfunction

Neurotrophins (NTs), particularly Nerve Growth Factor (NGF) and Brain-Derived Neurotrophic Factor (BDNF), have attracted increasing attention in the context of visceral function for some years. Here, we examined the current literature and presented a thorough review of the subject. After initial studies linking of NGF to cystitis, it is now well-established that this neurotrophin (NT) is a key modulator of bladder pathologies, including Bladder Pain Syndrome/Interstitial Cystitis (BPS/IC) and Chronic Prostatitis/Chronic Pelvic Pain Syndrome (CP/CPPS. NGF is upregulated in bladder tissue and its blockade results in major improvements on urodynamic parameters and pain. Further studies expanded showed that NGF is also an intervenient in other visceral dysfunctions such as endometriosis and Irritable Bowel Syndrome (IBS). More recently, BDNF was also shown to play an important role in the same visceral dysfunctions, suggesting that both NTs are determinant factors in visceral pathophysiological mechanisms. Manipulation of NGF and BDNF improves visceral function and reduce pain, suggesting that clinical modulation of these NTs may be important; however, much is still to be investigated before this step is taken. Another active area of research is centered on urinary NGF and BDNF. Several studies show that both NTs can be found in the urine of patients with visceral dysfunction in much higher concentration than in healthy individuals, suggesting that they could be used as potential biomarkers. However, there are still technical difficulties to be overcome, including the lack of a large multicentre placebo-controlled studies to prove the relevance of urinary NTs as clinical biomarkers.

Bowel Dysfunction in Spinal Cord Injury

PURPOSE OF REVIEW

To evaluate and report current evidence regarding the management of bowel dysfunction in spinal cord injury. There is a paucity of high-quality large studies on which to base management advice.

RECENT FINDINGS

Recent research has focused on defining the nature of symptomatology of bowel dysfunction in SCI and describing the effects on quality of life and social interactions. Technical aspects of colonoscopy have received attention, and aspects of understanding the pathophysiology in relation to both neural and non-neural dysfunction have been studied. There has been refinement and expansion of the pharmacological and non-pharmacological treatment options for bowel dysfunction in SCI. Management of bowel dysfunction in SCI requires a comprehensive and individualized approach, encompassing lifestyle, toileting routine, stimulation, diet, medications, and surgery. Further high-quality research is required to inform best practice.

Long-term bladder and bowel management after spinal cord injury: a 20-year longitudinal study

STUDY DESIGN

Prospective observational.

AIM

The aim of this study was to analyse changes in bladder and bowel management methods in persons with long-standing spinal cord injury (SCI).

SETTING

Two spinal centres in UK.

METHOD

Data were collected through interviews and examinations between 1990 and 2010 in a sample of persons injured more than 20 years prior to 1990.

RESULTS

For the 85 participants who completed the 2010 follow-up, the mean age was 67.7 years and the mean duration of injury was 46.3 years, 80% were male, 37.7% had tetraplegia AIS grade A, B, or C, 44.7% paraplegia AIS A, B, or C, and 17.6% an AIS D grade regardless of level. In all, 50.6% reported having changed their bladder method, 63.1% their bowel method, and 40.5% both methods since they enroled in the study. The reasons for change were a combination of medical and practical. In men, condom drainage remained the most frequent bladder method, and in women, suprapubic catheter replaced straining/expressing as the most frequent method. The use of condom drainage and straining/expressing bladder methods decreased, whereas the use of suprapubic and intermittent catheters increased. Manual evacuation remained the most frequent bowel management method. The percentage of participants on spontaneous/voluntary bowel emptying, straining and medications alone decreased, whereas the use of colostomy and transanal irrigation increased over time.

CONCLUSIONS

More than half the sample, all living with SCI for more than 40 years, required change in their bladder and bowel management methods, for either medical or practical reasons. Regular follow-ups ensure adequate change of method if/when needed.

Real world treatment patterns in the neurogenic bladder population: a systematic literature review

Myriad treatment modalities are available for neurogenic bladder (NGB) including behavioral therapies, oral pharmacotherapy, catheterization and surgical procedures. Little is known about how NGB patients are managed in the real world, how well patterns relate to clinical guidelines and how strategies may have changed over time. To address this gap, a systematic review (SR) was conducted using MEDLINE and EMBASE [1996–2017]. The inclusion criteria for studies were: (I) published in English; (II) conducted in human subjects; (III) reporting the treatment patterns/use in NGB; (IV) conducted in a real world setting. A narrative synthesis of results was conducted, comparing the results to current treatment guidelines. Percentage of treatment use was summarized using ranges. Eight studies met the inclusion criteria. Although most studies focused on spinal cord injuries (SCI), study designs and settings were heterogeneous. All data was collected before 2007. The most popular form of oral pharmacotherapy was antimuscarinics, used by 12.6–86.7% of patients; 0–100% of patients used catheterization techniques, 2.5–53.1% used reflex voiding (RV), and 0.2–55% underwent surgery. A notable amount of patients switched treatments. This SR revealed that numerous strategies have been used to manage NGB throughout the years and there has been a large variance in their use. Whilst there were some discrepancies, most practices matched recommendations made in current guidelines. Ultimately, this SR showed that there is a large gap of epidemiological studies conducted in the field of NGB and the authors felt that available data was insufficient to build a comprehensive picture of treatment patterns. Epidemiological studies using electronic medical records (EMRs) are necessary to advance our understanding of how treatment patterns have changed, and also build a comprehensive picture of how patients are managed in current practice.