Safety and side effects of transperineal prostate biopsy without antibiotic prophylaxis.

To investigate safety and side effects of transperineal prostate biopsy without antibiotic prophylaxis. Secondary aim was to identify whether the number of cores influenced the occurrence of complications. A cohort of 184 patients undergoing perineal prostate biopsy without antibiotic prophylaxis from 2015 to 2017 was analyzed retrospectively. On average, 41 cores were taken via two perineal skin punctures. Demographic and clinical data were obtained from patients´ electronic medical records. Binary logistic regression was performed to identify predictors for complications with the following covariates: age, prostate specific antigen (PSA), prostate volume, Prostate Imaging Reporting and Data System score, history of prostatitis, therapeutic anticoagulation, risk factors for urinary tract infection, surgery duration, and the number of biopsy cores. Furthermore, we calculated chi-squared tests with post hoc analyses for differences in the occurrence of complications between quartiles of the above-mentioned parameters. The overall complication rate was 10.8% (20/185). Out of 20, 19 (95 %) complications were ≤ grade 2 according to the Clavien-Dindo classification. There were two cases of afebrile urinary tract infection, and no patient developed fever or sepsis. Acute urinary retention was reported in 10 patients (5.4 %). The total number of cores was not associated to infectious complications or acute urinary retention rates. Transperineal prostate biopsy without antibiotic prophylaxis is a safe procedure. Neither postoperative fever nor sepsis occurred. An increased number of cores through two skin punctures was not associated with more complications.

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