Bhaskar K. Somani

Robotic Versus Laparoscopic Partial Nephrectomy: A Systematic Review and Meta-Analysis

CONTEXT Centres worldwide have been performing partial nephrectomies laparoscopically for greater than a decade. With the increasing use of robotics, many centres have reported their early experiences using it for nephron-sparing surgery. OBJECTIVE To review published literature comparing robotic partial nephrectomy (RPN) with laparoscopic partial nephrectomy (LPN). EVIDENCE ACQUISITION An online systematic review of the literature according to Cochrane guidelines was conducted from 2000 to 2012 including studies comparing RPN and LPN. All studies comparing RPN with LPN were included. The outcome measures were the patient demographics, tumour size, operating time, warm ischaemic time, blood loss, transfusion rates, length of hospital stay, conversion rates, and complications. A meta-analysis of the results was conducted. For continuous data, a Mantel-Haenszel chi-square test was used; for dichotomous data, an inverse variance was used. Each was expressed as a risk ratio with a 95% confidence interval p<0.05 considered significant. EVIDENCE SYNTHESIS A total of 717 patients were included, 313 patients in the robotic group and 404 patients in the laparoscopic group (seven studies). There was no significant difference between the two groups in any of the demographic parameters except for age (age: p=0.006; sex: p=0.54; laterality: p=0.05; tumour size: p=0.62, tumour location: p=57; or confirmed malignant final pathology: p=0.79). There was no difference between the two groups regarding operative times (p=0.58), estimated blood loss (p=0.76), or conversion rates (p=0.84). The RPN group had significantly less warm ischaemic time than the LPN group (p=0.0008). There was no difference regarding postoperative length of hospital stay (p=0.37), complications (p=0.86), or positive margins (p=0.93). CONCLUSIONS In early experience, RPN appears to be a feasible and safe alternative to its laparoscopic counterpart with decreased warm ischaemia times noted.

Flexible Ureteroscopy and Laser Lithotripsy for Stones >2 cm: A Systematic Review and Meta-Analysis

BACKGROUND AND PURPOSE Urinary stones >2 cm are traditionally managed with percutaneous nephrolithotomy (PCNL). Recently, flexible ureteroscopy and laser lithotripsy) (FURSL) has been used to manage them with comparable results. In a comparative study of renal stones between 2 and 3 cm, FURSL was reported to need less second-stage procedures and be just as effective as PCNL. Our purpose was to review the literature for renal stones >2 cm managed by ureteroscopy and holmium lasertripsy. MATERIALS AND METHODS A systematic review and quantitative meta-analysis was performed using studies identified by a literature search from 1990s (the first reported large renal stones treated ureteroscopically) to August 2011. All English language articles reporting on a minimum of 10 patients treated with FURSL for renal stones >2 cm were included. Two reviewers independently extracted the data from each study. The data of studies with comparable results were included into a meta-analysis. RESULTS In nine studies, 445 patients (460 renal units) were reportedly treated with FURSL. The mean operative time was 82.5 minutes (28-215 min). The mean stone-free rate was 93.7% (77%-96.7%), with an average of 1.6 procedures per patient. The mean stone size was 2.5 cm. An overall complication rate was 10.1%. Major complications developed in 21 (5.3%) patients and minor complications developed in 19 (4.8%) patients. A subgroup analysis shows that FURSL has a 95.7% stone-free rate with stones 2-3 cm and 84.6% in those >3 cm (P=0.01), with a minor complication rate of 14.3% and 15.4%, respectively, and a major complication rate of 0% and 11.5%, respectively. CONCLUSION In experienced hands, FURSL can successfully treat patients with stones >2 cm with a high stone-free rate and a low complication rate. Although the studies are from high-volume experienced centers and may not be sufficient to alter everyday routine practice, this review has shown that the efficacy of FURSL allows an alternative to PCNL.

Quality of Life and Body Image for Bladder Cancer Patients Undergoing Radical Cystectomy and Urinary Diversion—A Prospective Cohort Study With a Systematic Review of Literature

OBJECTIVES To determine whether health and body image are important determinants of quality of life (QoL) for patients undergoing urinary diversion (UD). Patients with advanced bladder cancer who undergo cystectomy and UD face potential serious morbidity (25%-40%) and a small risk of mortality (0%-4%). The systematic review compares QoL and body image for different types of diversions. METHODS One researcher trained in using schedule for evaluation of individual quality of life-direct weighting interviewed 32 consecutive patients undergoing radical cystectomy. The European Organization for Research and Treatment of Cancer QLQ-C30 and the Satisfaction With Life Scale questionnaire were also administered before cystectomy and 9-12 months postcystectomy. All QoL studies reporting on radical cystectomy and UD were reviewed between 1996 and March 2008. RESULTS Family, relationships, health, and finance were the most important determinants of QoL, whereas body image was not mentioned by anyone. On using European Organization for Research and Treatment of Cancer QLQ-C30 and Satisfaction With Life Scale, it was found that there was no difference in QoL of patients pre- and postcystectomy. In our review of published data, 40 studies were identified reporting on 3645 patients. Only 2 studies reported a better QoL in favor of neobladders, whereas 2 other studies suggest a better body image perception in patients with neobladder. CONCLUSIONS This prospective cohort study suggests that health and body image may not always be important to patients for their QoL. Our systematic review suggests an overall good QoL in most studies irrespective of the type of UD, with no significant differences among the different diversion types.

Good quality white‐light transurethral resection of bladder tumours (GQ‐WLTURBT) with experienced surgeons performing complete resections and obtaining detrusor muscle reduces early recurrence in new non‐muscle‐invasive bladder cancer: validation across time and place and recommendation for benchmarking

Study Type – Therapy (cohort)

Surgical management for upper urinary tract transitional cell carcinoma (UUT-TCC): a systematic review

Whats known on the subject? and What does the study add?

Irrigant flow and intrarenal pressure during flexible ureteroscopy: the effect of different access sheaths, working channel instruments, and hydrostatic pressure.

PURPOSE Our aim was to determine the optimal size of access sheath for ureteroscopy and stone lasertripsy to achieve good irrigant flow while maintaining the lowest possible intrarenal pressure. MATERIALS AND METHODS We used an in vitro anatomic model into which a pressure transducer was incorporated. Cook Peel-Away 10F, Flexor 12F, 14F, 16F single lumen, and a new 14F Flexor dual-lumen sheath were tested. Irrigant flow and intrarenal pressure were measured with an empty ureteroscope working channel and with a 1.4F or 2.4F basket within the working channel with a hydrostatic pressure of 1 m and 2 m, respectively. For the dual-lumen sheath, the irrigation was either connected to the scope or the second channel of the access sheath. Two other configurations were tested: 4F ureteral catheter placed alongside a 10F sheath (configuration 1) or a 5F ureteral catheter within a 16F access sheath (configuration 2). RESULTS With an empty working channel, irrigant flow increased with sheath diameter. The presence of a 1.4F or 2.4F basket, however, reduced flow up to 65% and 90%, respectively. Increasing the hydrostatic column to 2 m height improved the irrigant flow but with a predisposition to a higher intrarenal pressure. Using configurations 1 and 2, the flow rates improved by 250% and 700%, respectively, with a 2.4F basket in the working channel, and could also be used with a 2 m hydrostatic column without raising the intrarenal pressure. CONCLUSIONS Increased access sheath diameter does not improve flow when the working channel of a flexible ureteroscope is occupied. Our proposed configuration of a ureteral access catheter placed inside or alongside the access sheath provides by far the highest flow rates without a rise in the intrarenal pressure.

Outcomes of Flexible Ureterorenoscopy for Solitary Renal Stones in the CROES URS Global Study

PURPOSE We determined the efficacy and safety of flexible ureterorenoscopy for single intrarenal calculi and further stratified efficacy by stone burden. MATERIALS AND METHODS CROES collected prospective data on consecutive patients with urinary stones treated with ureterorenoscopy at 114 centers worldwide for 1 year. Only patients who underwent flexible ureterorenoscopy for a solitary renal stone were included in study. Preoperative and intraoperative characteristics, and postoperative outcomes were evaluated. Relationships between stone size and the stone-free rate, operative time, complications, hospital stay and need for re-treatment were determined. RESULTS A total of 1,210 patients with a solitary kidney stone less than 10 (52.2%), 10 to 20 (43.2%) and greater than 20 mm (4.6%) were treated with flexible ureterorenoscopy. The stone-free rate negatively correlated with stone size when adjusted for body mass index. Operative time positively correlated with stone size when adjusted for body mass index. The single session stone-free rate was 90% and 80% for stones less than 10 and less than 15 mm, respectively. Patients with stones greater than 20 mm achieved a 30% stone-free rate, more often needed re-treatment and were more often rehospitalized. There was no difference in the overall complication rate by stone size. However, patients with a stone greater than 20 mm showed a higher probability of fever after flexible ureterorenoscopy than those with a smaller stone. CONCLUSIONS Our data indicate that flexible ureterorenoscopy for a single intrarenal stone is a safe procedure. Best results after single session flexible ureterorenoscopy were obtained for stones less than 15 mm.

Safety and efficacy of ureteroscopic lithotripsy for stone disease in obese patients: a systematic review of the literature

Study Type – Prognosis (systematic review)

The role of targeted prophylactic antimicrobial therapy before transrectal ultrasonography‐guided prostate biopsy in reducing infection rates: a systematic review

To compare the incidence of infective complications after transrectal ultrasonography (TRUS)‐guided biopsy with either empirical fluoroquinolone or culture‐based targeted antimicrobial prophylaxis, and the prevalence of fluoroquinolone resistance (FQ‐R) in men undergoing prostate biopsy. A systematic review of the literature was performed following Preferred Reporting Items for Systematic Reviews and Meta‐Analyses (PRISMA) guidelines. We included studies of patients undergoing TRUS‐guided biopsy that compared infective outcomes of those who received targeted antimicrobial therapy based on the results of pre‐procedural rectal swab cultures, with those receiving empiric fluoroquinolone antimicrobial prophylaxis. The prevalence of FQ‐R was recorded as a secondary outcome measure. Studies with no control group were excluded. From 125 studies screened, nine studies (4 571 patients) met the inclusion criteria. All studies were of cohort design, and included a combination of retrospective and prospective data. Six studies included were undertaken in North America. The remaining studies were undertaken in Spain, Turkey and Columbia. Within these studies, 2 484 (54.3%) patients received empirical fluoroquinolone prophylaxis, whilst 2 087 (45.7%) patients had pre‐biopsy rectal swabs and targeted antibiotics. The mean FQ‐R was 22.8%. Post‐biopsy infection and sepsis rates were significantly higher in groups given empirical prophylaxis (4.55% and 2.21%) compared with groups receiving targeted antibiotics (0.72% and 0.48%). Based on these results 27 men would need to receive targeted antibiotics to prevent one infective complication. Our systematic review suggests that targeted prophylactic antimicrobial therapy before TRUS‐guided prostate biopsy is associated with lower rates of sepsis. We therefore recommend changing current pathways to adopt this measure.

Outcomes of scrotal exploration for acute scrotal pain suspicious of testicular torsion: a consecutive case series of 173 patients: OUTCOMES OF SCROTAL EXPLORATION FOR SUSPECTED TESTICULAR TORSION

Study Type – Therapy (case series) Level of Evidence 4