Asymptomatic Bacteriuria and Urological Surgery: Risk Factor or Not? Results from the National and Multicenter TOCUS Database

PURPOSE

Current guidelines recommend screening and treatment of asymptomatic bacteriuria prior to all urological surgeries breaching the mucosa. But few evidence is supporting this recommendation. At least, risk stratification for postoperative urinary tract infection to support this strategy is lacking. The aim of this study was to define the associated factors for postoperative febrile infectious complications (urinary tract infection or surgical site infection) in urological surgery.

MATERIALS AND METHODS

We conducted a retrospective, multicentric study including all consecutive patients undergoing any urological surgery with preoperative urine culture. The primary outcome was the occurrence of a urinary tract infection or surgical site infection occurring within 30 days after surgery.

RESULTS

rom 2016 to 2023, in 10 centers, 2389 patients were included with 838 (35%) positive urine cultures (mono/bi/polymicrobial). Postoperative infections occurred in 106 cases (4.4%), of which 44 had negative urine cultures (41%), 42 had a positive mono/bi-microbial urine cultures (40%) and 20 had a polymicrobial urine cultures (19%). In multivariable analysis, urinary tract infections during the previous 12 months of surgery (OR 3.43; CI 95 2.07-5.66; P < .001), monomicrobial/bimicrobial preoperative urine culture (OR 3.68; CI 95 1.57-8.42; P 0.02), polymicrobial preoperative urine culture (OR 2.85; CI 95 1.52-5.14; P < .001), operative time (OR 1.09; CI 95 1.04-1.15; P < .001) were independent associated factors for postoperative febrile infections.

CONCLUSIONS

Positive urine culture, including preoperative polymicrobial urine culture, prior to urological surgery was associated with postoperative infection. Additionally, patients experiencing infectious complications also had a higher incidence of other complications. The effectiveness of systematic preventive antibiotic therapy for a positive urine culture has not been conclusively established.

Asymptomatic bacteriuria prior to partial and radical nephrectomy: To screen or not to screen? Results from the national and multicenter TOCUS database

INTRODUCTION

In the era of increased bacterial resistance, the main strategy is to reduce the prescription of antibiotics when possible. Nowadays, it is highly recommended to screen for asymptomatic bacteriuria (ABU), prior to urological surgery with potential mucosal breach or urine exposure. Screening and treating urinary colonization is a strategy widely adopted before radical and partial nephrectomy but without any evidence. Our main end point in this study is to analyze the relationship between preoperative urine culture and the risk of postoperative febrile urinary tract infection (UTI) or surgical-site infection (SSI) in partial or radical nephrectomy patients.

METHODS

We conducted a multicenter retrospective cohort study between January 2016 and January 2023 in 11 French tertiary referral hospitals (TOCUS database). We collected the data for 269 patients including several pre-, intra-, and post-operative variables that could potentially increase the risk of postoperative UTI and SSI including preoperative urinary culture results.

RESULTS

The incidence rate of postoperative UTI and SSI was 8.9% in our study. After conducting a logistic multivariate analysis, a propensity score matching analysis, and a subgroup analysis, we found no significant correlation between the urine culture and the postoperative UTI risk [OR = 1.2 (0.5-2.7) (p = 0.7)]. Only the postoperative non-infectious complications were related to a higher risk of postoperative UTI [OR = 12 (4-37), p < 0.001)].

CONCLUSION

Our research shows that screening and treating for ABU prior to radical or partial nephrectomy seems to be unnecessary to prevent postoperative UTI and SSI.

Safety and Oncologic Outcomes of Percutaneous Cryoablation of Renal Cell Carcinoma Recurrences in the Ipsilateral Kidney Following Partial Nephrectomy

PURPOSE

To retrospectively investigate the safety and oncological outcomes of cryoablation performed on residual/recurring renal cell carcinoma (RCC) in the ipsilateral kidney following partial nephrectomy (PN).

MATERIALS AND METHODS

Data dealing with patients', RCC, procedure (including the length of the hospital stay), and follow-up (technical efficacy [TE], local tumor progression-free survival [LTPFS], disease-free survival [DFS], metastasis-free survival [MFS], cancer-specific survival (CSS), and overall survival [OS]) were retrospectively collected and analyzed.

RESULTS

Between January 2008 and November 2020, 21 consecutive patients (17 [81%] men; 4 [19%] women; median age 68 years; range 43-82) underwent cryoablation due to residual/recurring RCC in the PN site (15 patients) or de-novo RCC (6 patients) in the ipsilateral kidney. Median tumor size was 2.2 cm (mean 2.3 cm; range 0.8-4; interquartile range [IQR] 1.9-3). There were two (2/21; 10%) minor self-limiting hemorrhagic complications, both occurring in the group of patients with RCC in the PN site. Median hospital stay was 2 days (mean 2.1; range 1-5; IQR 2-2). TE was 100% (21/21 patients), and 10-year estimates of LTPFS, MFS and DFS were 74.1% (95% confidence intervals [CI] 56.8-96.7%), 36.4% (95% CI 14.2-93.8%), and 43.5% (95% CI 21.9-86.4%), respectively. CSS and OS were 100% at the last available follow-up (median 56 months; mean 67.4; range: 12-147; IQR:34-95).

CONCLUSION

Cryoablation in patients with residual/recurring RCC following PN is safe and results in high 10-year estimates of LTPFS.

Impact of radiation therapy on artificial urinary sphincter implantation in male patients: A multicenter study

AIMS

To evaluate the impact of an history of radiation therapy on the outcomes of artificial urinary sphincter (AUS) implantation in male patients.

METHODS

The charts of all patients who underwent AUS implantation for stress urinary incontinence (SUI) after prostate surgery in thirteen centers between 2004 and 2020 were retrospectively reviewed. We excluded patients with neurogenic SUI. Continence rates and incidence of complications, revision and cuff erosion were evaluated. The outcomes in irradiated men were compared to those of non irradiated men.

RESULTS

A total of 1277 patients who had an AUS met the inclusion criteria with a median age of 70 years, of which 437 had an history of prior radiotherapy. There was no difference in comorbidities. In irradiated patients, postoperative social continence, urethral atrophy and infection rates were respectively 75.6%, 2.4% and 9.5% and 76.8%, 5.4%, and 5.8% in nonirradiated men (respectively, p = 0.799, p = 0.128, p = 0.148). There were more urethral erosion in irradiated male patients. After a mean follow up of 36.8 months, the explantation free survival was poorer in irradiated patients (p = 0.001).

CONCLUSION

These data suggest that pelvic radiotherapy before AUS adversely affect device survival with and increased greater occurrence of infection-erosion and therefore of explantation.

Early Efficacy and Safety Outcomes of Artificial Urinary Sphincter for Stress Urinary Incontinence Following Radical Prostatectomy or Benign Prostatic Obstruction Surgery: Results of a Large Multicentric Study

BACKGROUND

Artificial urinary sphincter (AUS) is the gold standard for the management of moderate to severe stress urinary incontinence (SUI) in the male population. While outcomes of this device in postprostatectomy incontinence (PPI) are widely described, those obtained for incontinence after benign prostatic obstruction (BPO) surgery remains poorly explored.

OBJECTIVE

To compare continence outcomes after AUS implantation in a PPI population with those obtained in men incontinent after BPO surgery.

DESIGN, SETTING, AND PARTICIPANTS

A retrospective review of all cases of AUS implantation between 2005 and 2020 in 16 different French centers was conducted. Only patients with primary implantation whose indication was moderate to severe SUI after prostatectomy or BPO surgery were included (excluding those with a history of radiation therapy, brachytherapy, cystectomy, high-intensity focused ultrasound therapy, or neurogenic disease).

OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS

The primary endpoint was the rate of social continence (zero or one pad per day) at 3 mo. Complications were also noted within 90 d of implantation.

RESULTS AND LIMITATIONS

A total of 417 patients were included in the PPI group and 50 in the BPO surgery group. Social continence rates at 3 mo were similar between the groups (79% vs 72%, p = 0.701). Complication rate was significantly higher in the BPO group (8% vs 18%, p = 0.044). The same was found for the Clavien-Dindo type 2 complication rate (20.6% vs 44.4%, p = 0.026). The retrospective nature and lack of precise definition of incontinence are the main limitations of this study.

CONCLUSIONS

This multicentric study strengthens the position of AUS as gold standard for SUI after radical prostatectomy. Comparable efficacy results were found for incontinence after BPO surgery, with nevertheless a higher rate of complications.

PATIENT SUMMARY

Artificial urinary sphincter represents the gold standard for the treatment of moderate to severe stress urinary incontinence. Efficacy results are comparable between postprostatectomy incontinence and incontinence after benign prostatic obstruction surgery.