Combination of perianal-intrarectal prilocaine-lidocaine cream and teriprostatic nerve block for pain control during ultrason-guided transrectal prostate biopsy: a randomised trial

PURPOSE: To our knowledge the optimal analgesia during prostate biopsy remains undetermined. We tested the efficacy and safety of combined perianal-intrarectal lidocaine-prilocaine cream and periprostatic nerve block during transrectal ultrasound guided prostate biopsy. MATERIALS AND METHODS: A total of 280 patients were randomized to receive combined perianal-intrarectal lidocaine-prilocaine cream and periprostatic nerve block (group 1), perianal-intrarectal lidocaine-prilocaine cream alone (group 2), periprostatic nerve block alone (group 3) or no anesthesia (group 4) before transrectal ultrasound guided prostate biopsy. Pain was evaluated with a 10-point visual analog scale at subsequent procedural steps, including perianal-intrarectal substance administration, prostate transrectal ultrasound, periprostatic nerve block and sampling. Complications were assessed by self-administered questionnaire and telephone interview. RESULTS: The groups were comparable in patient age, prostate volume, pathology results and visual analog scale perianal-intrarectal substance administration. Visual analog scale results for transrectal ultrasound were lower in groups 1 and 2 vs 3 and 4 (mean 1.5 and 1.41 vs 5.37 and 5.31, p <0.001) and results for periprostatic nerve block were lower in group 1 vs 3 (mean 1.03 vs 3.74, p <0.001). Results for sampling were lower in groups 1 to 3 vs 4 (mean 0.77, 1.27 and 1.27 vs 4.33, p <0.001) and in group 1 vs 2 and 3 (p <0.001). Stratified analysis showed that visual analog scale sampling was lower in group 1 vs 2 and 3 in patients 65 years old or younger, those with a prostate greater than 49 cc and those with lower anorectal compliance (visual analog scale results for perianal-intrarectal substance administration greater than 2) (p = 0.006,