Hydronephrosis and Hydroureter Improvement Rates in Robotic-Assisted Laparoscopic Uretero-Ureterostomies: Does Anastomotic Site Matter?

OBJECTIVE: To compare improvement/change of hydronephrosis and hydroureter in patients with complete ureteral duplications that underwent upper and lower robotic-assisted laparoscopic uretero-ureterostomies. The hypothesis being that improvement of hydronephrosis and hydroureter between the two groups was similar. METHODS: 35 subjects met inclusion criteria and were reviewed retrospectively. 'Upper' anastomoses were defined as those being done below the lower pole of the kidney (Group 1), while 'lower' anastomoses were those done below the iliac vessels (Group 2). Primary variables analyzed were antero-posterior and diameter measurements of the renal pelvis and ureter, respectively, before and after surgery. Secondary variables included operative time, length of hospital stay, and complication rates. RESULTS: Group 1 consisted of 20 subjects while Group 2 consisted of 15 subjects. Presenting diagnoses were hydronephrosis in 31 subjects and incontinence in 4 subjects. Group 1 mean AP renal diameters decreased by 62.9% (P<.05), while Group 2 decreased by 65.4% (P<.05). Group 1 mean hydroureter diameter measurements decreased by 80.3% (P<.05), while Group 2 decreased by 83% (P<.05). The improvement in hydronephrosis and hydroureter between the two groups was not statistically different. Group 1 median operative time (271 minutes) was longer than Group 2 (201 minutes) (P<.05). There was no significant difference in hospital stay between the groups and there were no significant complications within the cohort. CONCLUSION: The improvement rate of hydronephrosis and hydroureter is similar in upper versus lower RAL UU. Operative time was significantly shorter in the lower anastomosis group.

Comparative analysis of perioperative prophylactic antibiotics in prevention of surgical site infections in stented, distal hypospadias repair.

PURPOSE: There is limited evidence that prophylactic antibiotics prevent surgical site infection in stented, distal hypospadias repair. Our hypothesis is that the use of prophylactic antibiotics does not affect the rate of surgical site infection in this setting. METHODS: We conducted a retrospective study of consecutive patients over a 6-year period with distal penile hypospadias treated with urethral stenting. Variables analyzed include age, type of repair, usage of preoperative and/or postoperative antibiotics, and length of follow-up. Patients with a history of proximal or re-operative hypospadias repair were excluded. Surgical site infection was defined by the presence of postoperative penile erythema and/or purulent drainage treated with therapeutic antibiotics. Secondary outcome analysis included the presence of other hypospadias complications. RESULTS: 441 consecutive subjects met our inclusion criteria with a mean age of 13.3 months. Patients were categorized into groups: Group 1 - Preoperative antibiotics (n = 64), Group 2 - Both Preoperative & Postoperative antibiotics (n = 159), Group 3 - Postoperative antibiotics (n = 122), Group 4 - No Preoperative or Postoperative antibiotics (n = 96). Two surgical site infections were reported out of the 441 patients: 1 in Group 3 and 1 in Group 4 (p = 0.513). There was no significant difference in the total patients with a hypospadias complication between groups. In the table below, Groups 1-3 were combined (345 patients) for comparison to Group 4 (No antibiotics, 96 patients) for further analysis with no difference in SSIs (p = 0.388) or respective hypospadias complications. CONCLUSIONS: The use of perioperative prophylactic antibiotics, both before and after surgery for distal, stented hypospadias repair, have not been shown to reduce the rate of surgical site infections nor hypospadias complications. Consequently, the benefit of prophylactic antibiotics in this setting is unclear.

2-octyl cyanoacrylate hypospadias repair dressing: a retrospective, controlled comparison.

INTRODUCTION: 2-octyl cyanoacrylate (OC) has been shown to be a viable option for usage following standard circumcision but data on its utilization following hypospadias repair is limited. Both OC and a standard waterproof transparent dressing (WD) are used following hypospadias repair at our children's hospital. Our hypothesis is that patients with distal hypospadias repair using OC for surgical dressing have similar outcomes as compared to patients with WD. MATERIALS AND METHODS: A retrospective study was performed evaluating all patients with distal hypospadias repair during a 2 year period. OC was primarily used by one of the three physicians in the practice with the other two primarily used WD for surgical dressing. The primary endpoints evaluated include hematoma requiring surgical drainage, infection, meatal stenosis, urethrocutaneous fistula, dehiscence, and diverticulum. Standard follow up after hypospadias repair includes a 1 week follow up for patients requiring urethral stent removal and reevaluation for all patients 3-4 months after surgery. REDCap was used in order to compile the database used in this study. RESULTS: A total of 280 patients underwent distal hypospadias repair during this interval. One hundred twenty-two patients had OC used with 3 (2.4%) having complications: 2 fistulas and 1 with both meatal stenosis and fistula. One hundred fifty-eight patients were dressed with WD with 5 (3.2%) complications: 4 fistulas and 1 meatal stenosis. No patients had hematoma, wound dehiscence, diverticulum, or infection. CONCLUSION: A low rate of complication was observed following distal hypospadias repair using both 2-octyl cyanoacrylate and a standard waterproof transparent dressing. 2-octyl cyanoacrylate is a safe option for surgical dressing following distal hypospadias repair but its utilization in this setting is surgeon dependent.

Prophylactic Antibiotics After Stented, Distal Hypospadias Repair: Randomized Pilot Study.

The usage of prophylactic oral antibiotics following distal hypospadias repair with stenting has been recently challenged. This study evaluated the incidence of symptomatic urinary tract infections (UTIs) following stented, distal hypospadias repair and the impact of prophylactic antibiotic therapy. Subjects 0 to 5 years of age with distal hypospadias were randomized to either Group 1 (antibiotics) or Group 2 (no prophylactic therapy). Urinalysis/urine culture was obtained intraoperatively with no preoperative antibiotics given. Phone interviews at 1 month and 3 months after surgery were done. Forty-eight patients were successfully randomized to either Group 1 (24) or Group 2 (24). The incidence of symptomatic UTI in this pilot study is low, and prophylactic antibiotic therapy does not appear to lower the incidence of symptomatic UTI. A larger, randomized, multicenter trial is needed to determine whether antibiotic prophylaxis reduces the risk of symptomatic UTIs following stented, distal hypospadias repair.

Analysis of preoperative antibiotic prophylaxis in stented, distal hypospadias repair.

INTRODUCTION: Surgical site infection [SSI] is a risk for any surgical procedure, including hypospadias repair. Prophylactic antibiotic therapy for patients having surgery is often effective in preventing SSIs, but with increasing rates of antibiotic resistance, this practice has been questioned. The objectives of this study are 1) to assess the incidence of SSIs in patients following stented, distal hypospadias repair and 2) to observe for any potential difference in the incidence of SSIs for patients with and without preoperative antibiotic utilization in this setting. MATERIALS AND METHODS: We retrospectively reviewed consecutive patients treated with stented, distal hypospadias repair from 2011 to 2014 by three surgeons and compared two groups: patients who received preoperative antibiotics and patients who did not. Patients with a history of previous hypospadias repair were excluded from the study. RESULTS: Two hundred twenty-four subjects were identified. Group 1 (135) received preoperative antibiotic and Group 2 (89) did not receive preoperative antibiotics. There was no statistically significant difference in SSI prevalence with 0 patients in Group 1 and 1 patient in Group 2 having a SSI. CONCLUSION: Although prophylactic antibiotics prior to hypospadias repair are most often used by pediatric urologists, this study demonstrates further evidence that antibiotics prior to this procedure do not appear to lower the rate of SSI. This study is limited by its retrospective nature and disparate mean follow up in the two cohorts. Surgical site infection does not appear to be decreased by prophylactic antibiotic therapy before distal hypospadias repair.

To Finish the Cut or Not.

We retrospectively evaluated the management of patients with unrecognized glanular hypospadias and a completed (group 1) or aborted (group 2) neonatal circumcision. The rate and type of subsequent surgeries performed were analyzed. Penile curvature, urinary stream deviation, and their impact on management were evaluated. Surgery was done in 55% of patients-40% of group 1 and 86% of group 2. Completion of the circumcision was done in 63% of group 2. Hypospadias repair was performed in 56% of group 1 and in 34% of group 2. Penile curvature rate did not affect the rate or type of surgery performed. Urinary stream deviation did not affect the rate of repair, but was a significant factor leading to hypospadias repair. We concluded that providers performing neonatal circumcisions do not have to abort the procedure when a glanular hypospadias is noticed. Most patients will require circumcision completion only.

Shortened operative time for pediatric robotic versus laparoscopic dismembered pyeloplasty.

INTRODUCTION: Robotic-assisted laparoscopic pyeloplasty (RALP) is increasingly becoming the standard procedure for management of ureteropelvic junction obstruction (UPJO) in the pediatric population, but few studies have shown a clear advantage over the more technically demanding laparoscopic pyeloplasty (LP) in children. The objective was to study the patients treated with RALP or LP at our institution and the associated outcomes for each minimally invasive approach for the correction of UPJO. MATERIALS AND METHODS: Our laparoscopic and robotic database was queried to identify all patients with a history of primary robotic-assisted or laparoscopic dismembered pyeloplasty for the correction of UPJO performed at our institution from January 2010 through November 2013 and were retrospectively reviewed. We analyzed age, surgical time, blood loss, hospital stay length, postoperative complications, and success rate. RESULTS: Seventy-three total patients were identified as having RALP or LP during this time period with five patients excluded from the analysis. We identified 55 patients with RALP and 13 patients with LP. No differences in success rate or postoperative complications were found for the two cohorts. The length of procedure was significantly shorter for the RALP group compared to the LP group.

Multidisciplinary management of complex vascular malformation invading bladder wall.

A 5-year-old African American male patient, with a history of complex vascular anomalies, underwent treatment for an infiltrating urinary bladder malformation initially misdiagnosed as a rhabdomyosarcoma. Neodymium:yttrium-aluminum-garnet laser was used to treat the bladder wall before surgical resection. Vascular malformations of the bladder are rare. This report demonstrates a multimodal technique for management of large infiltrating bladder venous and lymphatic malformation. At the 3-month follow-up, his symptoms have resolved and his cystoscopy demonstrated no evidence of residual disease.

A pilot study of telemedicine for post-operative urological care in children.

We conducted a retrospective study of paediatric urological surgery patients over a 12-month period. We compared patients followed up by telemedicine with those who had post-operative follow-up on site at the Arkansas Children's Hospital (ACH) in Little Rock. All pre-operative patients living in northwest Arkansas were given the opportunity to use telemedicine from a satellite clinic at Lowell, 328 km from the hospital. Of 61 patients, 10 chose telemedicine and 51 chose to be evaluated at the ACH clinic. All telemedicine visits were completed successfully, but in four cases, the video clarity of the telemedicine images was not sufficient for decision-making, and a digital photograph was sent by email to the physician at the ACH. There were no post-operative surgical complications in either patient group. In the telemedicine group, the median distance to the ACH was 330 km, and the median distance to the remote clinic was 35 km. In the on-site group, the median distance to the ACH was 293 km, which was significantly less (P=0.03). In the on-site group, the median travel time to the ACH was 174 min. If the telemedicine group had driven to the hospital, the median travel time would have been 192 min. Logistic regression showed that for every 37 km increase in distance to ACH, patients had a 111% increase in the odds of receiving telemedicine compared to receiving on-site care (OR=2.1, 95% CI: 1.0, 4.4). The pilot study supports the use of telemedicine for the post-operative evaluation of paediatric urology surgery patients and suggests that substantial travel distance and time savings can be made.

Pathophysiology and management of urinary incontinence in case of distal penile epispadias.

PURPOSE: We evaluated boys with distal epispadias and urinary incontinence to determine the cause, and designed a simplified bladder neck reconstruction to restore urinary continence. MATERIALS AND METHODS: Six boys with epispadias of the glans or distal penile shaft whose incontinence persisted after successful single stage epispadias repair were evaluated with cystoscopy and urodynamics after failed attempts at toilet training. Surgical management--simplified bladder neck reconstruction--involved suprapubic excision of an identified deformity of the roof of the bladder neck and posterior urethra, followed by reapproximation of the remaining normal bladder neck and posterior urethral tissues. RESULTS: All boys displayed a characteristic deformity of the roof of the bladder neck and posterior urethra, which extended distally through the membranous urethral sphincter toward the urethral meatus. Five of the 6 boys were treated surgically, and promptly achieved normal continence and urinary control that remained durable through a mean followup of 9.6 years. Histologically, the roof deformity exhibited abnormalities including attenuation and reduction of smooth muscle. CONCLUSIONS: The meatus is not the only site involved in distal epispadias, which presents as a field defect that deforms the roof of the urethra distal to the bladder neck. Incontinence in distal epispadias has a dual etiology, namely anatomical dilatation and distortion of the bladder neck and posterior urethra, and histological abnormality of the roof tissues. These conditions combine to affect adversely coaptive and constrictive functions of the posterior urethra and urinary sphincter. Excision and reapproximation of the roof deformity appears to be proof in principle of the cause of incontinence, and offers an alternative approach to treating incontinence in these patients without the need for more invasive surgical procedures.

Laparoscopic reconstructive options for obstruction in children with duplex renal anomalies.

OBJECTIVE: To present our initial experience of laparoscopic reconstructive surgery in children with upper urinary tract obstruction associated with duplex anomalies, as although there is much information on ablative procedures such as laparoscopic heminephrectomy, there is little available about minimally invasive reconstructive options for duplex renal anomalies in children. PATIENTS AND METHODS: We retrospectively reviewed four consecutive patients (aged 6-11 years) with duplex anomalies and laparoscopic reconstruction for obstructed, dilated segments treated at our institution. The port placement and surgical exposure were analogous to that for transperitoneal laparoscopic pyeloplasty. A JJ stent was placed retrogradely into the ureter immediately before each procedure. The procedures performed were pyelo-ureterostomy for incomplete duplication and lower pole pelvi-ureteric junction (PUJ) obstruction, lower pole pyeloplasty for lower pole PUJ obstruction and complete duplication, and ipsilateral uretero-ureterostomy and distal ureterectomy for an obstructed, ectopic upper pole. Foley catheters were left indwelling for 36-48 h and stents were removed at 4-6 weeks. Postoperative imaging included either ultrasonography or intravenous urography. RESULTS: Three children presented with intermittent flank pain due to lower pole PUJ obstruction. The other child presented with pyonephrosis and purulent drainage from her vagina due to an ectopic ureter associated with a functioning upper pole segment. All procedures were successfully completed. The only complication was in the first patient (pyelo-ureterostomy) who had transient urinary extravasation that resolved with bladder decompression for 10 days. With a follow-up of 6-18 months, all had resolution of symptoms with improvement in radiographic variables. CONCLUSIONS: This series shows that children with duplex anomalies and obstruction can undergo successful reconstruction using techniques learned with laparoscopic pyeloplasty.

Which is better--retroperitoneoscopic or laparoscopic dismembered pyeloplasty in children?

PURPOSE: Groups at multiple institutions have documented the efficacy of minimally invasive repair of ureteropelvic junction obstruction with a retroperitoneoscopic or laparoscopic approach. To our knowledge no group has compared the 2 operative procedures directly at a single institution. MATERIALS AND METHODS: The records of 49 consecutive patients with a history of retroperitoneoscopic pyeloplasty or transperitoneal laparoscopic pyeloplasty for ureteropelvic junction obstruction were reviewed retrospectively, of whom 29 underwent attempted retroperitoneoscopic pyeloplasty and 20 underwent laparoscopic pyeloplasty. Retroperitoneoscopic pyeloplasty cases were performed first in the series before changing to the laparoscopic pyeloplasty approach. Retroperitoneoscopic pyeloplasty was performed using an anterolateral approach with retroperitoneal balloon distention. Laparoscopic pyeloplasty repair was performed using a transmesenteric approach for left ureteropelvic junction obstruction or after right colon mobilization for right repairs. Dismembered pyeloplasty was performed over a stent using 5-zero polydioxanone suture. Stents were placed antegrade or retrograde based on anatomy and presenting symptoms. Parameters studied were patient age, operative time, postoperative analgesic requirement during hospitalization, hospital stay and success rate. RESULTS: No difference was observed between the 2 groups in patient age, success rate, hospital stay or analgesic narcotic requirement. Average operative time for retroperitoneoscopic pyeloplasty was significantly longer than for laparoscopic pyeloplasty (239.1 vs 184.8 minutes). Overall success rates were also statistically equivalent (25 of 27 retroperitoneoscopic and 19 of 19 laparoscopic pyeloplasties) with incomplete followup in 1 patient in the retroperitoneoscopic pyeloplasty group and 1 in the laparoscopic pyeloplasty group. Three children, including 2 with retroperitoneoscopic and 1 with laparoscopic pyeloplasty, had transient urinary extravasation postoperatively, which was related to poorly positioned stents. Five patients in the retroperitoneoscopic group and 1 in the laparoscopic group underwent balloon dilation for indistinct but persistent postoperative flank pain with equivocal radiological findings. There were no major complications following either technique. CONCLUSIONS: In our experience no major difference exists between the retroperitoneoscopic and laparoscopic approaches for correcting ureteropelvic junction obstruction. The difference in operative time likely reflects the learning curve for laparoscopic suturing and dissection. Currently we prefer the laparoscopic approach because of the larger working space for suturing, the perceived ease of antegrade stent placement and the subjective improvement in cosmetic outcome. The 2 techniques should be considered equal with regard to the successful correction of ureteropelvic junction obstruction.

Vesicoscopic cross-trigonal ureteral reimplantation: a minimally invasive option for repair of vesicoureteral reflux.

PURPOSE: Cross-trigonal ureteral reimplantation is a commonly performed procedure for the correction of vesicoureteral reflux. Most previously described laparoscopic techniques have used an extravesical approach. A "vesicoscopic" technique is analogous to standard open cross-trigonal repair in principle, except that 3 ports with insufflation of the bladder are used to perform the ureteral reimplantation. MATERIALS AND METHODS: A retrospective review was performed of patients treated for primary vesicoureteral reflux with either vesicoscopic or open ureteral reimplantation. For patients with vesicoscopic reimplantation a 5 mm port is placed in the dome of the bladder and 2, 3 mm ports are placed laterally. The ureters are mobilized transvesically, cross-trigonal submucosal tunnels are made and the ureters are sutured in place with intracorporeal suturing. The bladder ports are closed and a urethral catheter is left indwelling for 36 hours. Among the open reimplantation group 38 patients underwent cross-trigonal ureteral reimplantation, 2 underwent extravesical ureteral reimplantation and 2 were excluded due to insufficient records. Followup imaging for both groups included ultrasonography at 1 month and voiding cystography at 3 months postoperatively. RESULTS: A total of 52 consecutive children underwent vesicoscopic ureteral reimplantation with 1 patient converted to open intravesical reimplantation, and 40 consecutive controls underwent open ureteral reimplantation. Postoperative vesicoureteral reflux resolution rates for the vesicoscopic and open groups were 91% (42 of 46 patients) and 97% (31 of 32 patients), respectively. Mean patient age and mean maximal grade of vesicoureteral reflux in the vesicoscopic and open groups were 5.7 and 4.0 years (p=0.001), and 2.8 and 3.2 (p=0.036), respectively. Mean operative times for vesicoscopic and open procedures were 199 and 92 minutes, respectively (p=0.001). While the average length of hospital stay of 2 days was similar between the groups (p=0.122), less oral and intravenous analgesia was needed postoperatively in the vesicoscopic group (p=0.001 and p=0.005, respectively). Complications of vesicoscopic ureteral reimplantation included urinary leakage in 1 child, bladder stones in 1 and bilateral ureteral obstruction in 1. There were no complications in the open group. CONCLUSIONS: There is an ever increasing trend toward minimally invasive surgery. Our preliminary results indicate that vesicoscopic ureteral reimplantation is an effective procedure with minimal morbidity. Although success rates for vesicoureteral reflux resolution were slightly lower in the vesicoscopic group in this study, the favorable results of other series and the improvement in postoperative discomfort observed here suggest that this technique may be a reasonable option in the management of vesicoureteral reflux. Further refinement of the technique and critical analysis of the long-term outcomes are needed to understand fully its place in the treatment of vesicoureteral reflux.