A retrospective study on the prevalence and risk factors of neurogenic lower urinary tract dysfunction for acute ischemic stroke in China: A case-control study.

PURPOSE: This study identified risk factors for neurogenic lower urinary tract dysfunction (NLUTD) in patients with acute ischemic stroke (AIS) through multidimensional analysis of the medical records of patients, aiming to reduce the incidence of NLUTD, improve prognosis, and facilitate rehabilitation. MATERIALS AND METHODS: In this case-control study, patients with AIS were recruited from two tertiary general hospitals in Shenzhen, China, from March 2021 to October 2023. Patients were divided into NLUTD and non-NLUTD groups based on the presence and absence of NLUTD, respectively. Comparative analysis was performed using the Mann-Whitney U and chi-square tests, with significant variables being included in logistic regression analysis. RESULTS: Of the 652 participants enrolled in this study, 119 participants (18.3%) developed NLUTD. Bivariate analysis showed that 39 of 54 screened factors exhibited a significant correlation (p<0.05) with the incidence of NLUTD after AIS. Significant variables identified through logistic regression analysis included Glasgow coma scale (GCS) and National Institutes of Health Stroke Scale (NIHSS) scores, anemia, aphasia, pneumonia, brainstem involvement, multiple lesions, urine clarity (CLA), random venous blood glucose (GLU) and hemoglobin (HGB) levels, and white blood cell (WBC) count. CONCLUSIONS: A total of 11 risk factors for NLUTD were identified in this study. This finding provides valuable guidance for reducing the incidence of NLUTD after AIS and improving the quality of life of patients.

Patterns of neurogenic lower urinary tract dysfunction management and associated factors among Chinese community-dwelling individuals with spinal cord injury.

To identify different patterns of neurogenic lower urinary tract dysfunction management among Chinese community-dwelling individuals with spinal cord injury and explore the factors associated with latent classes. This was a cross-sectional study conducted in communities throughout China Mainland. Participants were recruited through the China Association of Persons with Physical Disability and a total of 2582 participants was included in the analysis. The data were collected by a questionnaire consisting of socio-demographic factors, disease-related factors, and a list of 8 bladder management methods. Latent class analysis was used to identify different latent classes of neurogenic lower urinary tract dysfunction management. Then the multinomial logistic regression was applied to analyze the relationship between neurogenic lower urinary tract dysfunction management patterns and socio-demographic and disease-related factors. Neurogenic lower urinary tract dysfunction management pattern among community-dwelling individuals with spinal cord injury was divided into four latent classes: "urinal collecting apparatus dominated pattern" (40.3%), "bladder compression dominated pattern" (30.7%), "intermittent catheterization dominated pattern" (19.3%) and "urethral indwelling catheterization dominated pattern" (9.6%). Multinomial logistic regression analysis found that the employment status, residential region, nursing need, payment method for catheterization products, hand function, time since spinal cord injury, urinary incontinence and concerns about social interaction affected by urination problems were significantly associated with latent classes. Only 19.3% of people used the intermittent catheterization as their main neurogenic lower urinary tract dysfunction management method. More attention needs to be paid to the promotion of the standardization process of intermittent catheterization in community-dwelling individuals with spinal cord injury. The associated factors of the four classes can be used for tailored and targeted interventions to increase the use of intermittent catheterization.

Effect of magnetic therapy in bladder dysfunction and quality of life in paraplegic patients.

BACKGROUND: Urinary dysfunction is linked to spinal cord injury (SCI). The quality of life (QoL) declines in both neurogenic bladder impairment and non-disordered patients. OBJECTIVE: To ascertain the effectiveness of pulsed magnetic therapy on urinary impairment and QoL in individuals with traumatic incomplete SCI. METHODS: This study included forty male paraplegic subjects with neurogenic detrusor overactivity (NDO) for more than one year following incomplete SCI between T6-T12. Their ages ranged from 20 to 35 and they engaged in therapy for three months. The subjects were divided into two groups of equal size. Individuals in Group I were managed via pulsed magnetic therapy once per week plus pelvic floor training three times a week. Individuals in Group II were managed with only three times a week for pelvic floor training. All patients were examined for bladder cystometric investigations, pelvic-floor electromyography (EMG), and SF-Qualiveen questionnaire. RESULTS: There was a noteworthy increment in individuals in Group I in volume of bladder at first desire to void and maximum cystometric capacity, detrusor pressure at Qmax, and maximum flow rate. There was a momentous increment in Group I in measures of evaluation of EMG biofeedback. There was a notable rise in Group I in SF-Qualiveen questionnaire. CONCLUSION: Magnetic stimulation should be favored as beneficial adjunct to traditional therapy in the management of bladder impairment and enhancing QoL in individuals with SCI.

A physiatrist's role in managing unique challenges in pregnancy and delivery in a patient with incomplete lumbar SCI: a case report.

INTRODUCTION: Women of childbearing age make up around 5-10% of individuals with spinal cord injury (SCI) and may face unique medical and functional complications during pregnancy, including prolonged hospitalization and increased risk of early rehospitalization due to falls. CASE PRESENTATION: Here, we discuss a case of a young ambulatory woman with a lumbar motor incomplete spinal cord injury who underwent successful delivery via cesarean section and the role of the physiatrist in the management of the patient's antepartum, intrapartum, and postpartum complications. The patient faced significant antepartum challenges secondary to her neurogenic bladder and pelvic floor weakness, resulting in increased use of her manual wheelchair. The physiatry team assisted with the co-development of a multidisciplinary bladder plan for increased urinary frequency and urinary tract infection prevention with the patient's obstetrics physician (OB). In addition, the physiatry team assisted with the procurement of a new wheelchair suited for the patient's pregnancy and childcare needs in anticipation of decreased mobility during this time. Regarding intrapartum challenges, the physiatry team worked with the patient and her OB to develop a safe birth plan considering the method of delivery, epidural usage, and the need for pelvic floor therapy before and after childbirth. DISCUSSION: The patient had a successful cesarean section delivery, with return to independent mobility soon after childbirth. In summary, this case demonstrates that there is a need for a multidisciplinary approach to patients with SCI during pregnancy and that the role of physiatry is critical to optimizing medical and functional outcomes.

Progress and research trends in neurogenic bladder after spinal cord injury bibliometric analysis based on web of science database: An observational study.

Neurogenic bladder (NB) is a significant complication that often occurs after spinal cord injury. It results from urinary dysfunction caused by the injury, disrupting the normal neural control of the bladder and urethra. Symptoms of NB can include urinary frequency, urgency, incontinence, and retention, all of which can greatly impact the quality of life of affected individuals. While there are articles and reviews on NB, fewer specifically address NB following spinal cord injury. This study examined 1095 publications from January 1, 2000, to March 27, 2024, in the Web of Science core database using bibliometric software like VOSviewer, CiteSpace, and Bibliometrics. The analysis revealed an increasing trend in the number of publications, with the United States and China leading in research output. Professor Jeremy B. Myers from the University of Utah had the highest number of publications, while the University of Michigan and the University of Pittsburgh were the institutions with the most publications. The journal Neurourology and Urodynamics had the highest number of articles, and common keywords included management, quality of life, and dysfunction, highlighting key areas of focus for scholars.

Quality of Life and Bladder Symptoms in Adolescents and Young Adults With Spina Bifida Who Catheterize via Urethra vs Catheterizable Channel.

PURPOSE: We sought to assess associations between health-related quality of life (QOL), bladder-related QOL, bladder symptoms, and bladder catheterization route among adolescents and young adults with spina bifida. MATERIALS AND METHODS: Clinical questionnaires administered to individuals ≥ 12 years old requiring catheterization between June 2019 to March 2020 in a spina bifida center were retrospectively analyzed. Questionnaires were completed in English or Spanish independently or with caregiver assistance. Medical records were reviewed for demographic and clinical characteristics. Primary exposure was catheterization route (urethra or channel). Primary outcome was health-related QOL, measured by Patient-Reported Outcomes Measurement Information System Pediatric Global Health 7 (PGH-7). Secondary outcomes were bladder-related QOL and bladder symptoms, measured by Neurogenic Bladder Symptom Score (NBSS). Nested, multivariable linear regression models assessed associations between catheterization route and questionnaire scores. RESULTS: Of 162 patients requiring catheterization, 146 completed both the PGH-7 and NBSS and were included. Seventy-three percent were catheterized via urethra and 27% via channel. Median age was 17.5 years (range 12-31), 58% of patients were female, and 80% had myelomeningocele. Urinary incontinence was more common among those who catheterized via urethra (60%) compared to channel (33%). On adjusted analyses, catheterization route was not significantly associated with PGH-7 or NBSS bladder-related QOL scores. More bladder symptoms were associated with worse bladder-related QOL. Patients who catheterized via channel had fewer bladder symptoms than those who catheterized via urethra. CONCLUSIONS: Catheterization route was not significantly associated with QOL. Though catheterization via channel was associated with fewer bladder symptoms, only degree of current bladder symptoms was significantly associated with bladder-related QOL.

Onabotulinum toxin A improves neurogenic detrusor overactivity following spinal cord injury: a systematic review and meta-analysis.

STUDY DESIGN: Systematic review and meta-analysis. OBJECTIVES: The current study aimed to assess the efficacy and safety of Onabotulinum toxin A (OBTX-A) treatment for neurogenic detrusor overactivity (NDO) in spinal cord injury (SCI) patients. SETTING: Iran. METHODS: All relevant articles of clinical trials and cohort studies indexed in PubMed/MEDLINE, Embase, Scopus, and Web of Science databases up to September 6, 2022, that addressed OBTX-A treatment for NDO following SCI were included. The quality of eligible studies was evaluated using Cochrane criteria. Also, the weighted mean difference (WMD) was measured with a random-effect model. RESULTS: Regarding the overall efficacy after OBTX-A treatment in the short term, volume per void (VV) (WMD = 118.8, 95% CI: 90.9-146.7, p < 0.01), incontinence-quality of life (IQoL) (WMD = 24.3, 95% CI: 15.8-32.8, p < 0.01), and maximum cystometric capacity (MCC) (WMD = 144.5, 95% CI: 132.3 to 156.7, p < 0.01) significantly increased, while maximum detrusor pressure during storage (MDP) (WMD = -30.5, 95% CI: -35.9 to -25.1, p < 0.01) showed a significant decrease. Furthermore, compared to the placebo group at the 200-unit dose, there was a significant increase in MCC (WMD = 113.5, 95% CI: 84.7 to 142.3, p < 0.01) and a significant decrease in MDP (WMD = -27.2, 95% CI: -39.2 to -15.1, p < 0.01). Urinary tract infection (UTI), hematuria, and autonomic dysreflexia were the most common side effects, occurring at rates of 29.6%, 14.8%, and 13.4%, respectively. CONCLUSION: Our findings highlighted the effectiveness and safety of OBTX-A as a promising treatment of NDO following SCI.

Identifying Bladder Phenotypes After Spinal Cord Injury With Unsupervised Machine Learning: A New Way to Examine Urinary Symptoms and Quality of Life.

PURPOSE: Patients with spinal cord injuries (SCIs) experience variable urinary symptoms and quality of life (QOL). Our objective was to use machine learning to identify bladder-relevant phenotypes after SCI and assess their association with urinary symptoms and QOL. MATERIALS AND METHODS: We used data from the Neurogenic Bladder Research Group SCI registry. Baseline variables that were previously shown to be associated with bladder symptoms/QOL were included in the machine learning environment. An unsupervised consensus clustering approach (k-prototypes) was used to identify 4 patient clusters. After qualitative review of the clusters, 2 outcomes of interest were assessed: the total Neurogenic Bladder Symptom Score (NBSS) and the NBSS-satisfaction question (QOL). The NBSS and NBSS-satisfaction question at baseline and after 1 year were compared between clusters using analysis of variance and linear regression. RESULTS: Among the 1263 included participants, the 4 identified clusters were termed "female predominant," "high function, low SCI complication," "quadriplegia with bowel/bladder morbidity," and "older, high SCI complication." Using outcome data from baseline, significant differences were observed in the NBSS score, with the female predominant group exhibiting worse bladder symptoms. After 1 year, the overall bladder symptoms (NBSS Total) did not change significantly by cluster; however, the QOL score for the high function, low SCI complication group had more improvement (ß = -0.12, P = .005), while the female predominant group had more deterioration (ß = 0.09, P = .047). CONCLUSIONS: This study demonstrates the utility of machine learning in uncovering bladder-relevant phenotypes among SCI patients. Future research should explore cluster-based targeted strategies to enhance bladder-related outcomes and QOL in SCI.

Comparison of postoperative urinary complications in laparoscopic-assisted anorectoplasty versus posterior sagittal anorectoplasty for anorectal malformation with rectourethral fistula.

BACKGROUND: Long-term urinary outcomes after anorectal malformation (ARM) repair are affected by surgical approach and sacral anomalies. This study aimed to compare laparoscopic-assisted anorectoplasty (LAARP) and posterior sagittal anorectoplasty (PSARP) in terms of urinary complications. METHODS: Between 2001 and 2022, 45 patients were treated with LAARP or PSARP. The rectourethral fistula and inflow angle between the fistula and rectum was confirmed by preoperative colonography. The incidence of urinary complications and treatment were compared between the two groups. RESULTS: Four patients (14%) had remnant fistula and five patients (17%) had neurogenic bladder dysfunction in LAARP group, while three patients (18%) had urethral injury in PSARP group. All patients with remnant fistula were asymptomatic and followed without treatment. The incidence of remnant fistula improved between earlier decade and later decade. In all cases with urethral injury, suture repair was performed and no postoperative leakage was noted. All five patients with neurogenic bladder dysfunction had spine abnormalities that required clean intermittent catheterization (CIC) and two were free from CIC finally. CONCLUSIONS: It is important to check inflow angle preoperatively to prevent remnant fistula. For PSARP, meticulous dissection is required when separating fistula from urethra because they create common wall. The most contributing factor to neurogenic bladder is sacral anomalies. Preoperative evaluation and postoperative urinary drainage are important.

Bladder-Related Quality of Life After Spinal Cord Injury: Findings from the Neurogenic Bladder Research Group Spinal Cord Injury Registry.

The Neurogenic Bladder Research Group (NBRG) was formed with the mission to optimize quality of life (QoL), surgical outcomes, and clinical care of patients with neurogenic lower urinary tract dysfunction. One of the original priorities of the organization was to support creation of the NBRG Spinal Cord Injury (SCI) Registry. The aim of this Registry was to establish a prospective database, in order to study bladder-related QoL after SCI. The study enrolled close to 1500 participants from across North America over an 18 month time-period (January 2016-July 2017).

Integrating Patient Preferences with Guideline-Based Care in Neurogenic Lower Urinary Tract Dysfunction After Spinal Cord Injury.

Individual and social factors are important for clinical decision-making in patients with neurogenic bladder secondary to spinal cord injury (SCI). These factors include the availability of caregivers, social infrastructure, and personal preferences, which all can drive bladder management decisions. These elements can be overlooked in clinical decision-making; therefore, there is a need to elicit and prioritize patient preferences and values into neurogenic bladder care to facilitate personalized bladder management choices. For the purposes of this article, we review the role of guideline-based care and shared decision-making in the SCI population with neurogenic lower urinary tract dysfunction.

Application of improved glomerular filtration rate estimation by a neural network model in patients with neurogenic lower urinary tract dysfunction.

BACKGROUND: Previous studies have indicated that creatinine (Cr)-based glomerular filtration rate (GFR) estimating equations - including the new Chronic Kidney Disease Epidemiology creatinine (CKD-EPIcr) equation without race and the estimated glomerular filtration rate (eGFR) equation developed for the Chinese population - displayed suboptimal performance in patients with neurogenic lower urinary tract dysfunction (NLUTD), which limited their clinical application for detecting changes in GFR levels in all cohorts. OBJECTIVE: To develop a neural network model based on multilayer perceptron (MLP) for evaluating GFR in Chinese NLUTD patients, and compare the diagnostic performance with Cr-based multiple linear regression equations for Chinese and the CKD-EPIcr equation without race. DESIGN: Single-center, cross-sectional study of GFR estimation from serum Cr, demographic data, and clinical characteristics in Chinese patients with NLUTD. PATIENTS: A total of 204 NLUTD patients, from 27 different geographic regions of China, were selected. A random sample of 141 of these subjects was included in the training sample set, and the remaining 63 patients were included in the testing sample set. METHODS: The reference GFR (rGFR) was assessed by the technetium-99m-labeled diethylenetriaminepentaacetic acid (99mTc-DTPA) double plasma sample method. A neural network model based on MLP was developed to evaluate GFR in the training sample set, which was then validated in the testing sample set and compared with Cr-based GFR equations. RESULTS: The MLP-based model showed significant performance improvement in evaluating the difference, absolute difference, precision, and accuracy of GFR estimation compared with the Cr-based GFR equations. Additionally, compared with the rGFR, we found that the MLP-based model provided an acceptable level of accuracy (greater than 85%, which was within a 30% deviation from the rGFR). CONCLUSION: The MLP-based model offered significant advantages in estimating GFR in Chinese NLUTD patients, and its application could be suggested in clinical practice.

Bladder height to width ratio as a surrogate marker for non-physiological storage pressures in children with spinal dysraphism.

INTRODUCTION: Spinal dysraphism is the most frequent cause of neurogenic bladder. Urodynamic study (UDS) is an important component of the follow-up of a child with neurogenic bladder. However, it suffers from a lack of widespread availability and is further hampered by technical difficulties and difficulty in its interpretation in children. A neurogenic bladder often appears vertically elongated; only limited and sparse literature is available regarding objectively defining the bladder shape and the urodynamic parameters in the cohort. OBJECTIVES: This study aimed to investigate the usefulness of the bladder's height-to-width ratio (HWR) on cystogram as a screening tool for identifying "non-physiological" bladder pressures in children with spinal dysraphism. A prospective study was undertaken to evaluate children operated for spinal dysraphism. Cystogram, ultrasonography and UDS evaluation were performed. HWR was calculated by the ratio of the maximum height to the maximum bladder width at maximum cystometric capacity (MCC), where MCC was calculated using standard Koff's formula, given by (age in years + 2) *30 ml in children more than one year and weight *7 ml for infants. The children were categorised into groups based on maximum detrusor pressure (MDP) into two groups (MDP ≥ 30 cmH2O and MDP < 30 cmH2O). A receiver-operative characteristic curve was constructed to analyse the sensitivity and specificity of HWR in predicting the MDP. RESULTS: A total of 53 children, operated for spinal dysraphism, met the study criteria during the study period, from March 2021 to September 2022. The median age of children was 4 years (IQR-3-5.5 years). The HWR ratio was compared between the two groups and was significantly higher for the non-physiological pressure bladders than for physiological pressure bladders (mean of 1.55 vs 1.26, p = 0.001). On evaluating the sensitivity and specificity of HWR for discerning children with non-physiological bladder pressures were 87.5% and 48.28%, respectively. The area under the curve (AUC) was 0.781, with a cut-off value of 1.3. DISCUSSION: We attempted to evaluate the HWR based on bladder shape objectively. We demonstrated a moderate correlation between the bladder shape and the bladder pressures. An HWR of 1.3 or higher could be significant for identifying a non-physiological bladder storage pressure. CONCLUSION: The height to width ratio of the bladder on cystogram is a useful tool as a surrogate marker for non-physiological storage pressures in bladders of children with spinal dysraphism.

A report on neurogenic bladder in COVID-19 vaccine-associated acute transverse myelitis.

INTRODUCTION: Acute transverse myelitis (ATM) is a rare neurological complication of Coronavirus disease (COVID-19) vaccines. Various vaccines have been linked to ATM, such as non-replicating viral vectors, ribonucleic acid, and inactivated vaccines. An ATM case is presented here involving the BNT162b2 vaccine leading to asymmetrical incomplete paraplegia and neurogenic bladder. CASE PRESENTATION: A 66-year-old male developed urinary retention one day after his second dose of the BNT162b2 vaccine, followed by rapidly progressing lower limb weakness. Clinical examination showed asymmetrical paraparesis, reduced sensation below the T8 level, including perianal sensation, and loss of ankle and anal reflexes. Laboratory tests were largely unremarkable, while the spine MRI revealed thickened conus medullaris with a mild increase in T2/STIR signal intensity and subtle enhancement post gadolinium. Following treatment with methylprednisolone, plasmapheresis, and immunoglobulin, and a rehabilitation program, the patient achieved good motor and sensory recovery, but the bladder dysfunction persisted. Single-channel cystometry indicated neurogenic detrusor underactivity and reduced bladder sensation, as evidenced by low-pressure and compliant bladder. The urethral sphincter appeared intact or overactive. The post-void residual urine was significant, necessitating prolonged intermittent catheterisation. DISCUSSION: Bladder dysfunction due to the COVID-19 vaccine-associated ATM is not as commonly reported as motor or sensory deficits. To our knowledge, this is the first case to highlight a neurogenic bladder that necessitates prolonged intermittent catheterisation as a consequence of COVID-19 vaccine-associated ATM. This report highlights the rare complication of the neurogenic bladder resulting from the BNT162b2 vaccine. Early detection and treatment are crucial to prevent long-term complications.

How to define failure of intradetrusor injections of botulinum toxin A for neurogenic detrusor overactivity.

INTRODUCTION: Neurogenic detrusor overactivity (NDO) has a major impact on patients' quality of life and can lead to upper urinary tract complications. Intradetrusor botulinum toxin type A injections are administered as second-line treatment to these patients following the failure of anticholinergic agents. The aim of the DETOX 2 study is to propose a consensus definition of the failure of intradetrusor botulinum toxin injections for NDO in patients presenting spinal cord injury, spina bifida, or multiple sclerosis (MS) with self-catheterization. METHOD: This study followed the method adopted by the French National Authority for Health for recommendations by consensus. Based on a review of the literature and a preliminary survey, a steering committee compiled a questionnaire and selected a rating group comprising 16 experts from the Neuro-Urology Committee of the French Urology Association (cnuAFU) and Genulf. The experts were asked to complete the online questionnaire. At the end of the first round, all participants came together to discuss any disagreements and a second-round online questionnaire was completed to reach a consensus. RESULTS: Thirteen of the 16 experts approached completed both rounds of questionnaires. A strong consensus was reached for two proposals (median score = 9/10) which were therefore included in the definition from the first round: at least one repeat injection of the same botulinum toxin at the same dose must be given to rule out failure on technical grounds and a duration of efficacy <3 months must be considered a failure. At the end of round 2, a relative consensus was reached regarding the clinical criterion defining failure (median score = 7/10) and the urodynamic criterion of failure (median score = 8/10). An additional proposal was selected during this second round on the need for a voiding diary (median score = 8/10). CONCLUSION: The first consensus definition of failure of an intradetrusor injection of TB-A for NDO has been achieved with this study: persistence of detrusor overactivity with maximum detrusor pressures >40 cm H2O and/or a compliance issue and/or persistence of urinary incontinence and/or urgency and/or a number of daily self-catheterizations >8/day and/or efficacy <3 months. This study will help to standardize research on the failure of the intradetrusor botulinum toxin for NDO in clinical practice and clinical research.

Knowledge, perceptions, and beliefs about urinary tract infections in persons with neurogenic bladder and impacts on interventions to promote person-centered care.

STUDY DESIGN: Qualitative study. OBJECTIVES: To explore how knowledge, perceptions, and beliefs about urinary tract infections (UTIs) among persons with neurogenic bladder (NB) may impact health behaviors and provider management and enhance person-centeredness of interventions to improve UTI management. SETTING: Three Veterans Affairs (VA) medical centers. METHODS: Adults with NB due to spinal cord injury/disorder (SCI/D) or multiple sclerosis (MS) with UTI diagnoses in the prior year participated in focus groups. Transcripts were coded using deductive codes linked to the Health Belief Model and inductive codes informed by grounded theory. RESULTS: Twenty-three Veterans (SCI/D, 78%; MS: 18.5%) participated in discussions. Three themes emerged: (1) UTI knowledge; (2) factors affecting the intervention environment; and (3) factors affecting modes of delivery. Knowledge gaps included UTI prevention, specific symptoms most indicative of UTI, and antibiotic side effects. Poor perceptions of providers lacking knowledge about NB and ineffective patient-provider communication were common in the Emergency Department and non-VA facilities, whereas participants had positive perceptions of home-based care. Participants perceived lower severity and frequency of antibiotic risks compared to UTI risks. Participant preferences for education included caregiver involvement, verbal and written materials, and diverse settings like peer groups. CONCLUSIONS: Identifying patient perspectives enhances person-centeredness and allows for novel interventions improving patient knowledge and behaviors about UTIs. Partnering with trusted providers and home-based caregivers and improving NB knowledge and communication in certain care settings were important. Patient education should address mental risk representations and incorporate preferences for content delivery to optimize self-efficacy and strengthen cues to action.

Improvement of lower urinary tract dysfunction by a monoacylglycerol lipase inhibitor in mice with spinal cord injury.

AIMS: Activation of the endocannabinoid system by monoacylglycerol lipase (MAGL) blockade may affect the lower urinary tract function. We investigated the effect of an MAGL inhibitor, MJN110, on neurogenic lower urinary tract dysfunction (LUTD) in the mouse model of spinal cord injury (SCI). METHODS: Female C57BL/6 mice that underwent spinal cord transection at T8-10 level were divided into three groups consisting of (1) vehicle-treated SCI mice, (2) 5 mg/kg, or (3) 10 mg/kg of MJN110-treated SCI mice. MJN110 and vehicle were administered intraperitoneally for 7 days from 4 weeks after spinal cord transection. We then conducted awake cystometrograms and compared urodynamic parameters between three groups. The expression of cannabinoid (CB) receptors, TRP receptors, and inflammatory cytokines in L6-S1 dorsal root ganglia (DRG) or the bladder mucosa were evaluated and compared among three groups. Changes in the level of serum 2-arachidonoylglycerol (2-AG) and bladder MAGL were also evaluated. RESULTS: In the cystometrogram, detrusor overactivity (DO) parameters, such as the number of nonvoiding contraction (NVC), a ratio of time to the 1st NVC to intercontraction interval (ICI), and NVC integrals were improved by MJN110 treatment, and some effects were dose dependent. Although MJN110 did not improve voiding efficiency, it decreased bladder capacity, ICI, and residual urine volume compared to vehicle injection. MJN110 treatment groups had lower CB2, TRPV1, TRPA1, and inflammatory cytokines mRNA levels in DRG and bladder mucosa. Serum 2-AG was increased, and bladder MAGL was decreased after MAGL inhibitor treatment. CONCLUSIONS: MAGL inhibition improved LUTD including attenuation of DO after SCI. Thus, MAGL can be a therapeutic target for neurogenic LUTD after SCI.

Maximal detrusor pressure can be predicted using technetium-99m-mertcaptoacetyltriglycine renal scintigraphy in the early stages of spinal cord injury.

STUDY DESIGN: Retrospective cohort study. OBJECTIVE: To investigate the potential of technetium-99m-mercaptoacetyltriglycine (99mTc-MAG-3) renal scintigraphy for predicting maximal detrusor pressure in the early stages of spinal cord injury (SCI). SETTING: Tertiary rehabilitation facility. METHODS: Medical records of individuals with SCI admitted between January 2020 and April 2023 who underwent both 99mTc-MAG-3 renal scintigraphy and urodynamic study within 90 days of SCI onset were retrospectively reviewed. Pearson's coefficient analysis was performed to determine the relationship between 99mTc-MAG-3 renal scintigraphy findings and urodynamic study findings. A multivariate linear regression analysis was performed to determine the best predictors of maximal detrusor pressure. A multivariate logistic regression analysis was performed to determine risk factors for high detrusor pressure. RESULTS: Ninety-four participants were enrolled in this study. Pearson's correlation analysis showed that effective renal plasma flow (ERPF) and ERPF (% predicted) were significantly correlated with maximal detrusor pressure. The multivariate linear regression analysis demonstrated that ERPF (% predicted) was a significant predictor of maximal detrusor pressure. The multivariate logistic regression analysis showed that ERPF (% predicted) was significantly associated with high detrusor pressure. The receiver operating characteristic curve demonstrated that the predictive model had an area under the curve of 0.725, with an ERPF (% predicted) cut-off of 64.05%, sensitivity 1.000, and specificity 0.429. CONCLUSIONS: These results suggest that 99mTc-MAG-3 renal scintigraphy may be useful for predicting high detrusor pressure in early SCI and may guide the timing of urodynamic studies in individuals with early SCI for appropriate management of neurogenic lower urinary tract dysfunction.

The rationale for bladder washouts in children with neurogenic bladder.

Children with a neurogenic bladder are at risk of developing recurrent urinary tract infections and long-term kidney failure. Due to an altered lower urinary tract, children may be overtreated for simple bacteriuria or undertreated for a potentially severe urinary tract infection. This group of patients represent high users of healthcare, and are at risk of colonization and development of antibiotic resistance. Bladder washouts with non-antibiotic electrochemically activated solutions are a potential new prophylactic option for patients with bladder dysfunction when clean intermittent catheterization has resulted in chronic bacteriuria.