Penoscrotal inflatable penile prosthesis recipients often fully recover from pain at two weeks following placement.

The symptoms and duration of pain following inflatable penile prosthesis (IPP) surgery remains poorly understood. We characterize postoperative pain following penoscrotal 3-piece inflatable penile prosthesis placement in patients managed with a standardized pain management protocol. This is a single-center prospective analysis of 96 virginal penoscrotal 3-piece IPP recipients (9/2019 to 9/2021) excluding patients with chronic pain, IPPs performed with alternative approaches or concomitantly with other surgeries and those with infections. Standardized pain questionnaire was performed by phone on post-operative day (POD) 2, 7, 14, and 30. The primary outcome was self-reported pain scores, measured by pain score 0-10 (0 = no pain, 10 = unbearable, "worst pain you have ever felt") at various locations (incision, penile, scrotal, abdominal) over the first 30 days postoperatively. A majority of pain reported was outside the scrotal area with 67.6% of complaints in the shaft, glans, abdomen and incision. From POD2 to POD30, there was a significant decrease in severe pain from 46.2 to 11.1% (p = 0.05) with an increase in mild pain from 23.1 to 62.4% (p = 0.05). Roughly half of the participants (47.9%, n = 46) reported no pain by POD14. Penoscrotal IPP recipients often fully recover from pain at the two-week period following surgery and those with lingering discomfort predominantly complain of penile shaft and glans pain.

A Systematic Scoping Review of Comparative Effectiveness Studies in Kidney Stone Disease.

OBJECTIVE: To review the status of comparative effectiveness studies for kidney stone disease with focus on study outcome, type, population, time trends, and patient-centered approaches. METHODS: A systematic scoping review was performed for articles published between January 1, 2005, and March 30, 2021, using keywords relevant to kidney stone disease. Studies published in English that compared two or more alternative methods for prevention, diagnosis, treatment, monitoring, or care delivery were included. Two reviewers independently reviewed abstracts and an arbitrator resolved discrepancies. Nine reviewers abstracted information from full-length studies. Descriptive statistics were summarized, and linear regression was performed to evaluate temporal trends of study characteristics. RESULTS: We reviewed 1773 abstracts and 707 full-length manuscripts focused on surgical intervention (440); medical expulsive therapy (MET) (152); analgesic control (80); and homeopathic, diagnostics, and/or prophylaxis (84). Randomized controlled trials were common across all outcome categories, including surgery (41.6%), MET (60.2%), analgesic control (81.3%), homeopathic (41.2%), diagnostic (47.6%), and prophylaxis (49.1%). Patient-reported outcomes were utilized in 71.7% and 95% of MET and analgesic control studies, respectively, but in the minority of all other study themes. Over time, meta-analyses and multicenter studies increased [P < .001]. CONCLUSION: Surgical and MET themes dominate published comparative literature in kidney stone disease. There is substantial variation in use of patient-reported outcomes across surgical themes. Multicentered studies and those generating higher level evidence have increased over time but opportunities exist to improve collaborative, high-quality, and patient-centered research in kidney stone disease.

Posterior urethral valves in patients with trisomy 21: Similar renal outcomes and rates of volitional voiding.

INTRODUCTION: Posterior urethral valves (PUV) occur in patients with Down Syndrome (DS) at a rate of 3-4%; far higher than the general population. Our understanding of the relationship between PUVs and DS is in its infancy, with the majority of the literature consisting of case reports. In this study, we present the largest known series of DS patients with PUVs. AIM: We hypothesized that patients with DS and PUVs would have worse functional bladder outcomes and renal outcomes when compared to PUV patients without DS. STUDY DESIGN: We queried our prospectively managed multi-institutional database of PUV patients from 1990 to 2021. We identified patients with a concomitant diagnosis of DS and PUV. In addition, we performed a systematic review of the literature describing the presentation of children with PUV and DS. Patient demographics, renal outcomes, voiding habits, surgical interventions, and radiologic images were aggregated and analyzed. RESULTS: Out of the 537 patients in our PUV database, we identified 18 patients with a concomitant diagnosis of PUV and DS, as well as 14 patients with a concomitant diagnosis of PUV and DS from the literature. DS and non-DS patients had a similar age at presentation, 31.5 days (2-731) and 17 (4-846), and length of follow up 6.32 years (2-11.2) and 6.98 (1-13). Both groups had similar nadir creatinines DS 0.43 (0.4-0.8), non-DS 0.31 (0.2-0.5) and similar rates of renal failure (DS 11.1% and non-DS 14.5%). With respect to bladder outcomes, a similar percentage of patients were volitionally voiding at last follow up (DS 72.2% and non-DS 72.3%). Our literature review corroborated these findings. CONCLUSIONS: Patients with DS and PUV have similar renal outcomes to other PUV patients in terms of renal function, progression to renal failure, and probability of volitional voiding with continence. Given the increased rate of PUVs in the DS population, physicians should have a high index of suspicion for PUV when patients with DS present with voiding dysfunction.

Improving Compliance with 24-H Urine Collections: Understanding Inadequacies in the Collection Process and Risk Factors for Poor Compliance.

PURPOSE OF REVIEW: The purpose of this review paper is to describe the 24-h urine collection in terms of its utility, collection process, and common problems with its acquisition. RECENT FINDINGS: Although 24-h urine collections are standard of care for high-risk stone formers, several nuances in test acquisition including inaccurate urine collections 50% of the time and poor patient compliance limit its potential utility. Compliance in obtaining 24-h urine collections has been shown to be improved in patients who have not undergone surgical treatment of urinary calculi, patients with metabolic stone disease or family history of stone disease, Caucasian ethnicity, and in those with more sedentary occupations. Studies show conflicting data of compliance regarding patient age and gender. Physicians must understand the difficulties regarding 24-h urine collections including patient compliance, variability between collections, and complexities with interpretation to best utilize this tool in guiding clinical management for the treatment of nephrolithiasis.

A zebrafish model of conditional targeted podocyte ablation and regeneration.

Podocytes are specialized cells that contribute critically to the normal structure and function of the glomerular filtration barrier. Their depletion plays an important role in the pathogenesis of glomerulosclerosis. Here, we report generation of a genetic model of conditional podocyte ablation and regeneration in zebrafish using a bacterial nitroreductase strategy to convert a prodrug, metronidazole, into a cytotoxic metabolite. A transgenic zebrafish line was generated that expresses green fluorescence protein (GFP) and the nitroreductase fusion protein under the control of the podocin promoter Tg(podocin:nitroreductase-GFP). Treatment of these transgenic zebrafish with metronidazole results in podocyte apoptosis, a loss of nephrin and podocin expression, foot process effacement, and a leaky glomerular filtration barrier. Following metronidazole washout, proliferating cells were detected in the glomeruli of recovering transgenic fish with a restoration of nitroreductase-GFP fluorescence, nephrin and podocin expression, a reestablishment of normal foot process architecture, and glomerular barrier function. Thus, our studies show that zebrafish podocytes are capable of regenerating following depletion, and establish the Tg(podocin:NTR-GFP) fish as a new model to study podocyte injury and repair.