Effectiveness of Prophylactic Antibiotics against Post-Ureteroscopic Lithotripsy Infections: Systematic Review and Meta-Analysis

PURPOSE: To evaluate the effectiveness of prophylactic antibiotic therapy in reducing the incidence of post-ureteroscopic lithotripsy (URL) infections. METHODS: A systemic search of PubMED was performed to identify all randomized trials that compared the incidence of post-operative infections in patients without pre-operative urinary tract infections who underwent URL with and without a single dose of prophylactic antibiotics. The data were analyzed using Cochrane Collaboration Review Manager (RevMan, version 5.2). The endpoints of the analysis were pyuria (>10 white blood cells/high-power field), bacteriuria (urine culture with bacteria >10(5) colony-forming units/mL), and febrile urinary tract infections (fUTIs), defined as a body temperature of >38°C with pyuria or meaningful bacteriuria within 1 wk after the operation. RESULTS: In total, four trials enrolling 500 patients met the inclusion criteria and were subjected to meta-analysis. Prophylactic antibiotics significantly reduced post-URL pyuria (risk ratios [RR] 0.65; 95% confidence interval [CI] 0.51-0.82) and bacteriuria (RR 0.26; 95% CI 0.12-0.60; p=0.001). Patients who received prophylactic antibiotics tended to have lower rates of fUTI, although the difference was not statistically significant. CONCLUSION: Prophylactic antibiotic therapy can reduce the incidence of pyuria and bacteriuria after URL. However, because of the low incidence of post-URL fUTIs, we failed to show that a single dose of prophylactic antibiotics can reduce the rate of such infections significantly.