Video-Urodynamic Characteristics and Predictors of Switching from Botulinum Neurotoxin a Injection to Augmentation Enterocystoplasty in Spinal Cord Injury Patients

Botulinum neurotoxin type A (BoNT-A) injection and augmentation enterocystoplasty (AE) are alternative and effective management strategies for neurogenic detrusor overactivity (NDO) refractory to pharmacotherapy. A great majority of patients with spinal cord injury (SCI) may, however, prefer BoNT-A injections to AE, due to the less invasive characteristics. In this study we evaluated the influence of various video-urodynamic study (VUDS) parameters in SCI patients who continuously received repeat BoNT-A detrusor injections or switched to AE to improve their bladder conditions. We compared the changes in the urodynamic parameters before and after each mode of treatment. In this retrospective study, all SCI patients with refractory NDO who had received at least one BoNT-A injection were enrolled. VUDS was performed before and after both BoNT-A injection and AE. All of the urodynamic parameters of the storage and micturition—including the bladder capacity of every sensation, maximal flow rate (Qmax), post-voiding residual volume, detrusor pressure at Qmax, and bladder contractility index—were recorded. A total of 126 patients, including 46 women and 80 men, with a mean age of 41.8 ± 13.1 years, were recruited for this study. All of the patients receiving either BoNT-A injection or AE had a statistically significant increase of bladder capacity at every time-point during filling and a decrease in detrusor pressure at Qmax during voiding. Patients who switched from BoNT-A to AE had greater improvements in their urodynamic parameters when compared with those who continued with BoNT-A injections. Accordingly, SCI patients receiving BoNT-A injections but experiencing few improvements in their urodynamic parameters should consider switching to AE to achieve a better storage function and bladder capacity.

Trigonal-Sparing vs. Trigonal-Involved OnabotulinumtoxinA Injection for the Treatment of Overactive Bladder: A Systematic Review and Meta-Analysis

Objective: Overactive bladder (OAB) is a disease characterized by the presence of urinary urgency. We carried out a meta-analysis to assess the effectiveness and safety of trigonal-involved injection of onabotulinumtoxinA (BoNT-A) in comparison with the trigonal-sparing technique in cases with OAB [neurogenic detrusor overactivity (NDO) and idiopathic detrusor overactivity (IDO)].Methods: Randomized controlled trials (RCTs) of BoNT-A injection for OAB were searched systematically by using EMBASE, MEDLINE, and the Cochrane Controlled Trials Register. The datum was calculated by RevMan version 5.3.0. The original references of relating articles were also reviewed.Results: In total, six RCTs involving 437 patients were included in our analysis. For OAB, the trigone-including group showed a different patient symptom score (p = 0.03), complete dryness rate (p = 0.002), frequency of incontinence episodes (p = 0.01), detrusor pressure at maximum flow rate (p = 0.01), and volume at the first desire to void (p = 0.0004) compared with the trigone-sparing group. Also, a trigone-including intradetrusor injection demonstrated a significant improvement in the patient symptom score (p = 0.0004), complete dryness rate (p = 0.0002), frequency of incontinence episodes (p = 0.0003), detrusor pressure at maximum flow rate (p = 0.01), and volume at the first desire to void (p = 0.00006) compared with the trigone-sparing group for treatment of NDO. The adverse events rates were similar in both groups.Conclusions: The meta-analysis has demonstrated that trigone-including BoNT-A injection was more effective compared with the trigone-sparing injection for the treatment of OAB, especially for NDO.

Urodynamic Values Role For Females With Different Types Of Urinary Incontinence

Aim — The aim of this study was to analyse how conventional urodynamic values differ between females with specific types of urinary incontinence (UI). Material and Methods — Cross-sectional study enrolled 666 females with UI. Based on patient history and questionnaires they were divided into three groups: stress (SUI), mixed (MixUI) and urgency (UUI). Physical investigation and urodynamics were performed. The continuous factors: age and urodynamic data were evaluated using Multinomial regression and ANOVA test using SUI, MixUI, UUI as outcome groups. Results — Analysing urodynamic parameters significant difference between at least two groups was shown by the cystometric capacity and maximum flow rate: both highest in the SUI group; residual urine, opening detrusor pressure, maximum urethral closure pressure at rest, functional urethral length at rest: all highest in the UUI group. Mainly all urodynamic data showed significant difference between SUI/UUI, and MixUI/UUI groups, while difference between SUI/MixUI were not significant. Conclusions — Most of urodynamic data for MixUI group patients do not differ from SUI group. UDS parameters like: maximum flow rate, residual urine, opening detrusor pressure, maximum urethral closure pressure at rest, functional urethral length at rest can help to distinguish SUI and MixUI groups from UUI group.

Effect of Transurethral Resection of the Prostate on Urodynamic Parameters in Patients with Benign Prostatic Enlargement with Upper Urinary Tract Dilatation

<b><i>Objective:</i></b> To evaluate the urodynamic outcomes of transurethral resection of the prostate (TURP) in patients of benign prostatic enlargement (BPE) with upper urinary tract dilatation and correlate with International Prostate Symptoms Score (I-PSS). <b><i>Methods:</i></b> In this prospective study, patients of BPE with upper urinary tract dilatation from July 2017 to June 2019 were enrolled. At presentation, detailed I-PSS, ultrasonography abdomen, serum creatinine, and serum PSA were recorded. All the patients were catheterized and observed for postobstructive diuresis. At 4 weeks, repeat ultrasound and serum creatinine were recorded. Urodynamic study (UDS) was performed after ensuring sterile urine culture. Patients underwent TURP as per the standard technique. A repeat UDS was performed after 3 months, and analysis was done. <b><i>Results:</i></b> Forty-four patients were enrolled of which data of 37 patients were analyzed. In the filling phase of the UDS, there was a significant decrease in detrusor pressure at the end filling phase from 27 to 9.0 cm H₂O after TURP. Maximum cystometric capacity and bladder compliance significantly improved at 3 months following surgery. In the voiding phase, peak flow rate showed a significant increase, postvoid residual urine volume significantly decreased, and peak detrusor pressure marginally decreased following TURP. The I-PSS decreased from 20 ± 8 to 5 ± 6 following TURP. <b><i>Conclusion:</i></b> High detrusor pressure and reduced compliance is a risk factor for upper urinary tract dilatation. Changes in the bladder dynamics and resolution of hydronephrosis following TURP reflected in the changes in urodynamic parameters and I-PSS.

Comparison of Outcome of Transurethral Resection of Prostate Between Patients With Preoperative Low or Normal and High Voiding Pressure

Objective: T0 compare the outcome of Transurethral Resecton of Prostate between Patients with Preoperative Low or Normal and High Voiding Pressure. Methods: This hospital based prospective observational study was conducted in the Department of Urology of Dhaka Medical college Hospital from July 2008 to June 2010 on male patients aging >59 years having Lower urinary tract symptoms (LUTS) attending to urology OPD& IPD were evaluated by history, physical examination including DRE and necessary investigations like USG of KUB and prostate with MCC & PVR, Q max, IPSS score to identify the potential candidates for TURP. Potential participants were counseled for urodynamic study. Who fulfilled the selection criteria included in this study in outpatient basis or admitted in the urology ward and numbered chronologically and performed urodynamic study and then patients underwent TURP, after 12 weeks of completion of TURP again a follow-up urodynamic study performed in all patients to compare the outcome between two groups. Sample size was 65, high pressure voiding group were 36 in number and Normal or low pressure voiding group were 29 in number. Data were collected on variables of interest using a structural data collection format. Data were processed and analyzed using SPSS (Statistical package for social science) software program. The test of significant employed to analyze the data was descriptive statistics and Student’s t-test, Paired and unpaired t- test, Fisher exact test. Probability value (P value < 0.05) was considered significant. Results: In this study the age ranges were 59 and 88 years and mean age was 70.7 ± 6.7 years. the maximum urinary flow rate, residual urine volume and maximum intravesical pressure 3 months after transurethral prostatic resection were significantly better in patients with high detrusor pressure compared to those with normal/low normal/low detrusor pressure (15.9±0.7 vs. 21.3±2.2ml/sec, p<0.001, 18.1±11.8 vs. 2.9±0.7 ml, p<0.001 and 48.3±6.2 vs. 71.9±15.2 cmH2O, p<0.001 respectively).The maximum urinary flow rate ( Q max ), residual urine volume, maximum intravesical pressure and detrusor pressure at peak urinary flow rate and also IPSS score were significantly improved 3 months after operation in both groups, more improvement was observed in preoperative high voiding pressure group. Post-voiding residual urine is a clear indication of poor outcome, and also the maximum urinary flow rate, maximum intravesical pressure and detrusor pressure at peak urinary flow rate all factors may precipitate decompensation of bladder and in low voiding pressure group decompensation of bladder occurs more than the high voiding pressure group as the preoperative and postoperative residual urine develops more in low voiding pressure group. Conclusion: The high voiding pressures (detrusor pressure) may influence in good postoperative outcome and helps in resolution of a significant outflow obstruction, there are good urodynamic reasons for avoiding unwanted TURP rather it could be justified by using urodynamic study which may predict outcome of TURP. So, we may assess properly the patient for prostatectomy by urodynamic study. As if we do this type of evaluation before TURP it may reduce the unwanted operation. Bangladesh Journal of Urology, Vol. 21, No. 2, July 2018 p 111-119