Background: Infections related to catheters in the upper urinary tract (CUUT) are associated with specific characteristics. Methods: A prospective observational study was carried out from 2012 to 2015 to evaluate infections in patients with CUUT. Results: A total of 209 infections were included (99 with double-J, 81 with nephrostomy, and 29 with internal/external nephroureteral stents). Among nephrostomy tube carriers, the most frequently isolated microorganisms were Pseudomonas and Enterococcus. In those with an internal/external nephroureteral stent, Klebsiella was the most common, and 57.1% were extended-spectrum beta-lactamase-producing Klebsiella. In double-J carriers, Escherichia coli and Enterococcus were the most common microorganisms. Multiple-drug resistance (MDR) microorganisms were isolated in 28.6, 47.1, and 58.3% of patients with double-J, nephrostomy, and internal-external nephroureteral stents. A percutaneous CUUT (p = 0.005) and immunosuppression (p = 0.034) were risk factors for MDR microorganisms. Conclusions: Non-E. coli bacteria are commonly isolated in patients with CUUT. MDR microorganisms are frequent, mainly in percutaneous approach or immunosuppression.

PurposeHealthcare-associated infections (HAIs) in urological patients have special features due to specific risk factors. Our objective was to evaluate the characteristics and risk factors for HAIs in patients hospitalized in a Urology ward.Materials and MethodsWe evaluated prospectively, from 2012 to 2015, the incidence, types and risk factor for HAIs, microbiological and resistance patterns.ResultsThe incidence of HAIs was 6.3%. The most common types were urinary infections (70.5%) and surgical site infections (22.1%). Univariate analysis showed an increased risk of HAIs among patients with American Society of Anesthesiologists physical status classification system III–IV (odds ratio [OR], 1.39; p<0.001), immunosuppression (OR, 1.80; p=0.013), previous urinary infection (OR, 4.46; p<0,001), and urinary catheter before admission (OR, 1.74; p<0.001). The surgical procedures with the highest incidence of HAIs were radical cystectomy (54.2%) and renal surgery (8.7%). The most frequently isolated microorganisms were Escherichia coli (25.1%), Enterococcus spp. (17.5%), Klebsiella spp. (13.5%) and Pseudomonas aeruginosa (12.3%). Enterococcus sp was the most common microorganism after radical cystectomy and in surgical site infections, E. coli showed resistance rates of 53.5% for fluoroquinolones, 9.3% for amikacin. The percentage of extended-spectrum betalactamase producing E. coli was 24.7%. Klebsiella spp. showed resistance rates of 47.8% for fluoroquinolones, 7.1% for amikacin and 4.3% for carbapenems. Enterococcus spp showed resistance rates of 1.7% for vancomycin and; P. aeruginosa of 33.3% for carbapenems and 26.2% for amikacin.ConclusionsComorbidities, previous urinary infections, and urinary catheter are risk factors for HAIs. The microorganisms most commonly isolated were E. coli, Enterococcus and P. aeruginosa. Prospective monitoring may decrease the incidence of infections.

Objectives: To review the incidence of healthcare-associated infections/urinary tract infection (UTI), risk factors, microorganisms isolated and antibiotic resistances in patients who underwent lower urinary tract endoscopic surgery (LUTES) in a tertiary care hospital. Methods: A prospective observational study was carried out including 1,498 patients who undergo LUTES. Patients with and without UTI after surgery were compared. We analysed infection incidence, risk factors, microorganisms isolated and antibiotic resistances. Results: Postoperative UTI incidence was 4.7%. Risk factors found: higher American Society of Anesthesiologists classification (OR 2.82; 95% CI 1.8–4.5; p < 0.00), immunosuppression (OR 2.89; 95% CI 1.2–7.2; p = 0.01), indwelling urinary catheter prior admission (OR 2.6; 95% CI 1.6–4.2; p < 0.00) and postoperative catheterization longer than 2 days (OR 1.74; 95% CI 1.7–4.3; p < 0.00). Transurethral resection of the bladder (TURB) had the highest infection rates (5.5%). Microorganisms isolated were Pseudomonas aeruginosa (23.5%), Escherichia coli (17.6%), Klebsiella pneumoniae and Enterococcus spp (11.8%). Resistance rates for flourquinolones varied between 28 and 80%, and Carbapenem-resistant Enterobacteriaceae rose up 20%. Conclusions: Low percentage of UTI after endoscopic surgery was registered. TURB was the procedure with highest infection rate. Pseudomonas aeruginosa stands out as the most frequently isolated microorganism. Patient comorbidities, previous urinary catheter and postoperative catheter were identified as risk factors.

Introduction: Our aim was to describe the incidence and risk factors associated with extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae and their resistance rate in a urological ward. Material and Methods: We carried out a prospective observational study from November 2011 to December 2014, reviewing healthcare-associated infections (HAIs) in our department. We evaluated the infections caused by ESBL-producing Enterobacteriaceae. Results: The incidence of HAIs in our urology ward was 6.8%. Enterobacteriaceae including Escherichia coli (24.9%), Klebsiella spp. (12.1%), Enterobacter spp. (5.9%), Morganella spp. (1.5%), Proteus spp. (1.5%), and Citrobacter spp. (1.5%) represented 47.4% of the isolated pathogens. The percentage of ESBL-producing Enterobacteriaceae was 26.4. Risk factors associated with a higher incidence of ESBL-producing bacteria were prior urinary tract infection (UTI; p < 0.001), hypertension (p = 0.042), immunosuppression (p = 0.004), and urinary stone (p = 0.027). The multivariable analysis confirmed prior UTI, immunosuppression and urinary stone as risk factors. ESBL-producing strains showed resistance rates of 85.3% for fluoroquinolones and 11.8% for carbapenems. Moreover, 16.7% of ESBL-Klebsiella were resistant to carbapenems. Conclusions: ESBL-producing enterobacteria are associated with higher cross resistance to antibiotics such as quinolones. Higher resistance rates are reported in ESBL-producing Klebsiella. Among patients admitted in a urology ward, risk factors for ESBL-producing strains were previous UTI, immunosuppression, and urinary stone.

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