Impact of Bladder Wall Thickness on the Outcomes of Antimuscarinic Treatment in Women with Overactive Bladder

<b><i>Aim:</i></b> This study aimed to evaluate the effect of bladder wall thickness (BWT) (using transabdominal ultrasound) on the outcomes of antimuscarinic treatment in women with overactive bladder. <b><i>Methods:</i></b> A total of 102 female patients with symptoms of OAB were recruited. All patients completed the Overactive Bladder version 8 (OAB-V8) (Arabic validation) and the International Consultation of Incontinence Questionnaire (ICIQ-SF). Patients completed the urodynamic study (UDS) including uroflowmetry and PVR and measures of BWT by transabdominal ultrasound. The patients were classified into 2 major groups: G1 (patients with BWT &#x3c;5 mm) and G2 (patients with BWT ≥5 mm). The patients were re-evaluated after 3-month medication with solifenacin 10-mg oral tablet. <b><i>Results:</i></b> At baseline, the results of OAB-V8 and ICIQ-SF were significantly higher in G2 than G1 (<i>p</i> &#x3c; 0.001). Regarding UDS, volume at 1st desire to void, volume at strong desire to void, and MBC were significantly higher in group 1 compared to group 2 (<i>p</i> = 0.001). Intravesical pressure at strong desire and patients’ number of DO were significantly increased in G2 (<i>p</i> &#x3c; 0.05 and <i>p</i> = 0.001, respectively). After treatment, there was an improvement in both groups regarding OAB-V8, ICIQ-SF, bladder volume at 1st desire to void, bladder volume at strong desire to void, bladder volume at DO, MBC, intravesical pressure at strong desire, and the patients’ number with DO (decreased), and these improvements were statistically significant in group 1 compared to group 2 (<i>p</i> &#x3c; 0.05). <b><i>Conclusion:</i></b> BWT showed a significant association with both OAB symptom scores and UDS parameters. The decrease in BWT is associated with a significantly higher response to solifenacin therapy regarding the UDS results.

A prospective study of outcome in patients with intra-abdominal hypertension

Background: Intra-abdominal hypertension (IAH) and Abdominal compartment syndrome (ACS) is increasingly recognized in critically ill patients, and the deleterious effects of increased intra-abdominal pressure (IAP) are well documented. It is known to affect almost all the system in the body, but mainly the renal, cardiovascular and pulmonary systems. The purpose of this study is to prospectively observe the outcome of IHP in patients admitted in ICU, acute surgical and emergency wards over three years and give our recommendations based on the outcome in such patients.Methods: We measured intravesical pressure using simple manometry to measure IAP.Results: We observed cardiac dysfunction in 16.30%, renal dysfunction in 10.86%, respiratory dysfunction in 21.74% and mortality of 15.2%. Significant mortality was associated with IAH grade II (55.6%) and grade III (100%).Conclusions: Due to the contribution towards mortality and common occurrence we suggest that intra-abdominal pressure be measured in ICU conditions.

Lateral Preoptic Area Neurons Activated by Angiotensin-(1–7) Increase Intravesical Pressure: A Novel Feature in Central Micturition Control

Central micturition control and urine storage involve a multisynaptic neuronal circuit for the efferent control of the urinary bladder. Electrical stimulation of the lateral preoptic area (LPA) at the level of the decussation of the anterior commissure in cats evokes relaxation of the bladder, whereas ventral stimulation of LPA evokes vigorous contraction. Endogenous Angiotensin-(1–7) [(Ang-(1–7)] synthesis depends on ACE-2, and its actions on binding to Mas receptors, which were found in LPA neurons. We aimed to investigate the Ang-(1–7) actions into the LPA on intravesical pressure (IP) and cardiovascular parameters. The gene and protein expressions of Mas receptors and ACE-2 were also evaluated in the LPA. Angiotensin-(1–7) (5 nmol/μL) or A-779 (Mas receptor antagonist, 50 nmol/μL) was injected into the LPA in anesthetized female Wistar rats; and the IP, mean arterial pressure (MAP), heart rate (HR), and renal conductance (RC) were recorded for 30 min. Unilateral injection of Ang-(1–7) into the LPA increased IP (187.46 ± 37.23%) with peak response at ∼23–25-min post-injection and yielded no changes in MAP, HR, and RC. Unilateral or bilateral injections of A-779 into the LPA decreased IP (−15.88 ± 2.76 and −27.30 ± 3.40%, respectively) and elicited no changes in MAP, HR, and RC. The genes and the protein expression of Mas receptors and ACE-2 were found in the LPA. Therefore, the LPA is an important part of the circuit involved in the urinary bladder control, in which the Ang-(1–7) synthetized into the LPA activates Mas receptors for increasing the IP independent on changes in RC and cardiovascular parameters.

External and internal oblique abdominis muscle release (eimr) for complex incisional hernia repair: Modification of partition surgical technique

Incisional hernia is the name given to hernias that form in the incision site after abdominal operations. The only treatment option for incisional hernias is surgery and the repair of incisional hernias is still a serious issue for surgeons. The aim of this study is to present an alternative surgical treatment procedure for the treatment of incisional hernias. The study included patients who were diagnosed with complex incisional hernia and underwent surgery between November 2016 and December 2017. In addition to demographic data such as age and gender, the operative and postoperative morbidity and mortality rates were documented. The patients who underwent additional surgical procedure other than herniography were excluded from the study. The study included 16 patients who met the inclusion criteria. Of 16 patients, nine (56.25%) were male and seven (43.75%) were female. The mean age of the patients was 51.25 years and the mean body mass index was 25.3 kg/m2. The hernia size measured in the computed tomography was 11.01 cm on average in men and 11.56 cm on average in women. The intravesical pressure measured intraoperatively before the surgery was 3.4 mmHg on average. While the mean intravesical pressure was found as 12.25 mmHg after the abdomen was closed, the mean intravesical pressure was measured as 6.43 mmHg after the relaxation incision and graft installment. The duration of the surgery was 48 minutes on average. In the postoperative period, paralytic ileus responsive to treatment was observed in two patients and skin necrosis was observed in one patient. No pulmonary embolism, respiratory problems and compartment syndrome that may cause mortality developed in patients. No recurrence was observed in patients in the control one year after the surgery. The golden standard surgical method for the incisional hernia surgery has yet to be determined. There is still a need for prospective randomized studies. We believe that our technique can be an alternative to other techniques in the incisional hernia surgery due to its easy applicability and low rate of complications.

X-ray videocystometry for high-speed monitoring of urinary tract function in mice

Lower urinary tract dysfunction (LUTd) represents a major health care problem with a high, unmet medical need. Design of additional therapies for LUTd requires precise tools to study bladder storage and voiding (dys)function in animal models. We developed videocystometry in mice, combining intravesical pressure measurements with high-speed fluoroscopy of the urinary tract. Videocystometry substantially outperforms current state-of-the-art methods to monitor the urine storage and voiding process, by enabling quantitative analysis of voiding efficiency, urethral flow, vesicoureteral reflux, and the relation between intravesical pressure and flow, in both anesthetized and awake, nonrestrained mice. Using videocystometry, we identified localized bladder wall micromotions correlated with different states of the filling/voiding cycle, revealed an acute effect of TRPV1 channel activation on voiding efficiency, and pinpointed the effects of urethane anesthesia on urine storage and urethral flow. Videocystometry has broad applications, ranging from the elucidation of molecular mechanisms of bladder control to drug development for LUTd.

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

Voiding Dysfunction in Old Male Rats Associated With Enlarged Prostate and Irregular Afferent-Triggered Reflex Responses

Purpose: This study was conducted to evaluate the hypothesis that an enlarged prostate in old rats may lead to complications associated with voiding dysfunction involving ionotropic P2X2/3-type purinergic receptorsMethods: Intact animals were divided into male young (MYR; 8–10 weeks old) and male old (MOR; 20 months old) rats. The animals underwent simultaneous detrusor electromyography (EMG) and suprapubic cystometry (CMG) under urethane anesthesia. Immunofluorescence techniques were used to evaluate prostatic autonomic innervation and P2X3R expression in bladder urothelial cells. The functional role of P2X3R was characterized by intramuscular application of AF-353, a selective P2X2/3R antagonist.Results: The prostate index significantly increased in MOR, suggestive of an enlarged prostate affecting micturition patterns. Significant EMG and CMG differences were found between MYR and MOR. Higher immunoreactivity for P2X2/3R in the urothelial layer and for prostatic neurofilaments was seen in MOR. Systemic inhibition of P2X2/3R had minimal effects on MYR responsiveness, but improved voiding function in MOR with a marked decrease of intravesical pressure and bladder contractile responses.Conclusions: The data support the hypothesis that an enlarged prostate in MOR may contribute to voiding dysfunction involving activation of P2X2/3R, which enhances a prostate-bladder reflex. This reflex may increase bladder afferent transmission and activation of increased prostate innervation, leading to voiding dysfunction.

Bladder pressure encoding by near-independent fibre subpopulations — implications for decoding

ObjectiveWe aim at characterising the encoding of bladder pressure (intravesical pressure) by a population of sensory fibres. This research is motivated by the possibility to restore bladder function in elderly patients or after spinal cord injury using implanted devices, so called bioelectronic medicines. For these devices, nerve-based estimation of intravesical pressure can enable a personalized and on-demand stimulation paradigm, which will be more effective and efficient. In this context, a better understanding of the encoding strategies employed by the body might in the future be exploited by informed decoding algorithms that enable a precise and robust bladderpressure estimation.ApproachTo this end, we apply information theory to microelectrode-array recordings from the cat sacral dorsal root ganglion while filling the bladder, conduct surrogate data studies to augment the data we have, and finally decode pressure in a simple informed approach.Main resultsWe find an encoding scheme by different main bladder neuron types that we divide into three response types (slow tonic, phasic, and derivative fibres). We show that an encoding by different bladder neuron types, each represented by multiple cells, offers reliability through within-type redundancy and high information rates through near-independence of different types. Our subsequent decoding study shows a potentially more robust decoding from mean responses of homogeneous cell pools.SignificanceWe have here, for the first time, analysed the encoding of intravesical pressure by a population of sensory neurons in a principled way using information theory. We show that even a simple adapted decoder can exploit the redundancy in the population to be more robust against cell loss. This work thus paves the way towards principled encoding studies in the periphery and towards a new generation of informed peripheral nerve decoders for bioelectronic medicines.