Bladder scan accuracy in pediatric patients: Does patient position matter?

INTRODUCTION: Despite its widespread use in pediatric urology clinics, portable bladder scanning is an insufficiently studied tool that lacks standardized protocols. Workflow at the present clinic can be impeded by scanning in the supine position, due to multiple trips to the restroom and back to the exam room. OBJECTIVE: The current study sought to test accuracy of bladder scanning, and hypothesized that it would be equally accurate in the standing versus traditional supine position in children, given the intra-abdominal location of their bladders. DESIGN: Sixty children from the bladder/bowel clinic were prospectively recruited. Patients had a formal supine renal/bladder ultrasound and pre-void and/or post-void assessment with scans in both the standing and supine positions. The methods were compared using repeated measures one-way ANOVA. RESULTS: Mean age was 9.2 years. The majority (85%) were female. All bladder scan estimates except for post-void supine significantly correlated with ultrasound volume. Pre-void standing had the strongest correlation (r = 0.83). There was no difference between ultrasound and standing estimates for pre-void volumes, but supine underestimated volumes by 44.8 ml (P < 0.01) (Summary Figure). Sub-group analysis of children aged <10 years showed that pre-void scans in both positions significantly underestimated volume (12% of estimated bladder capacity for standing, 24% for supine, P < 0.05). For post-void volumes, both standing and supine overestimated measurements by 29.4 ml and 18.3 ml, respectively (both P < 0.001). Sub-group analysis based on age yielded comparable results. DISCUSSION: It is believed that this is the first study to examine bladder scanning in different positions. Limitations included small sample size, and the study fell short of cost-effectiveness and outcome analysis to assess the real-life impact of the proposed use of standing bladder scanning in the clinic. CONCLUSION: Standing bladder scanning may be used in place of supine. However, bladder scanning generally appeared to have poor accuracy, especially in younger children, and thus should be used with caution. In practical terms, it may decrease specificity of detecting elevated post-void residuals compared to ultrasound.

Caring for urologic transition patients: Current practice patterns and opinions.

INTRODUCTION: Congenitalism is an emerging field that recognizes the complex needs of adult patients with congenital urologic issues. Despite the onset of transitional care clinics, these patients remain difficult to care for due to resource availability, insurance coverage, and multi-disciplinary needs. OBJECTIVE: The current study sought to characterize practice patterns and opinions regarding care for urologic transition patients. DESIGN: An anonymous 20-question survey was sent to members of the Society of Pediatric Urology listserv. Questions pertained to physician background, practice demographics, clinic structure, and quality. Five-point Likert scales were used to assess quality markers (5 = most/best). Data were analyzed in R, and subgroup analyses were performed. Subgroups included presence of formal transition clinic, city size, and practice type. RESULTS: The response rate was 53%, with 124 respondents. A formal transition clinic was reported by 32%. Those with formal clinics reported higher enthusiasm (3.9 vs 3.4, P < 0.01) for care of these patients and believed they provided better care compared to other institutions (P < 0.001) Summart Table. There was no significant difference in perceived quality between respondents in academic vs other practices. There was a small trend towards higher-quality ratings in smaller cities (3.8 vs 3.5, P = 0.13). The majority (64%) felt that transition patients are best cared for by specialized adult providers; however, these formalized clinics found to be staffed primarily by pediatric providers (54%). DISCUSSION: This study supported the general consensus in the literature that transition clinics improve care for urologic transition patients, while underlining discordance between current practice patterns and recommendations for optimal care. CONCLUSION: The majority of practices appeared to lack a formal transition clinic, and there was variation in their structure. Those with formal clinics tended to rate themselves as providing higher-quality care. The majority of respondents believed that adult specialists in either reconstructive or neuro-urology are best suited to care for these complex patients.

Reoperative robotic pyeloplasty in children.

INTRODUCTION: Reoperative pyeloplasty for recurrent ureteropelvic junction obstruction (UPJO) can be technically challenging and is associated with greater morbidity and lower success rates than an initial repair. Robotic-assisted laparoscopic pyeloplasty (RALP) previously has been demonstrated to be a safe and effective approach for management of recurrent UPJO; however, the length of follow-up has been limited. The objective of this study was to confirm the safety and efficacy of RALP for UPJO in children following failed previous pyeloplasty and provide clinical benchmarks for intermediate length follow-up in this patient population. METHODS: An IRB approved retrospective chart review was performed for all patients undergoing reoperative RALP from June 2006 to December 2014. All cases were performed by surgeons from two institutions for persistent UPJO following failed initial pyeloplasty. Information including demographic information, radiographic studies, and operative interventions performed between the initial repair and reoperative surgery, reoperative RALP intraoperative data, postoperative clinical course and imaging studies, and subsequent interventions following reoperative RALP were extracted. RESULTS: Twenty-three children underwent reoperative RALP. Eleven patients had right- and 12 left-sided repairs. Median age at reoperative RALP was 4.0 years and median interval between surgeries was 1.3 years. Indications for repeat repair included pain, infection, and/or radiographic evidence of worsening obstruction and/or deteriorating renal function. Mean operative time was 198 min from incision to port closure. Mean length of stay was 2.3 days. Six complications occurred in five patients within 30 days postoperatively, including ileus, pneumonia, and urinary tract infection. Median length of follow-up was 26 months (range 4-45 months) for all patients and 31 months (range 16-45 months) in 18 patients with >12 months of follow-up. More than 80% of patients presenting with flank pain prior to reoperative RALP had resolution of this symptom. To date, 78% of patients with >12 months of follow-up have not required further operative intervention. Excellent results have been achieved in 14 of 18 patients (78%) with sufficient postoperative follow-up in terms of length of follow-up (>12 months), symptom resolution, and/or improved imaging results. CONCLUSIONS: RALP following previous pyeloplasty is technically feasible with acceptable operative times, lengths of stay, and complication rates. Reoperative RALP is our preferred modality for repair of recurrent UPJO with the vast majority of patients having successful outcomes based on imaging, resolution of symptoms, and the rare need for further intervention across an intermediate length follow-up period.

Pediatric robotic-assisted laparoscopic ipsilateral ureteroureterostomy in a duplicated collecting system.

INTRODUCTION AND OBJECTIVE: Duplex renal collecting system is a common congenital anomaly in the pediatric population. The superior moiety ureter is often associated with an ectopic insertion. A common site of insertion is the urethra, which results in continuous incontinence. A novel repair for this abnormality is a robotic assisted laparoscopic ipsilateral ureteroureterostomy with end to side anastomosis. This teaching video will demonstrate positioning and operative technique for this procedure. PATIENT AND METHODS: This is the case of a 5-year-old girl who presented with lifelong continuous urinary incontinence. Workup revealed a duplicated collecting system with a functional superior moiety and ectopic ureter inserting into the urethra. A laparoscopic ipsilateral ureteroureterostomy was performed using a robotic surgical system. RESULTS: After docking the robotic surgical system, the duplicated collecting system was identified and an ipsilateral ureteroureterostomy was performed. The patient tolerated the procedure well and the ultrasound on follow up revealed no residual hydronephrosis. CONCLUSION: The accompanying teaching video shows appropriate positioning and operative technique for a robotic-assisted laparoscopic ureteroureterostomy. This innovative and minimally invasive technique is a safe and feasible approach to repair a duplex collecting system with an ectopic ureter in the pediatric population.