Lidocaine spray administration in transrectal ultrasound-guided prostate biopsy: Five years of experience

摘要

Objectives: We report in this singlecenter study our results of a five-year experience in the administration of lidocaine spray (LS) during ultrasound-guided prostate biopsy (TPB). Material and Methods: Between August 2008 and July 2013 a total of 1022 consecutive male patients scheduled for TPB with elevate PSA (≥ 4 ng/ml) and (or) abnormal digital rectal and (or) suspect TRUS were considered eligible for the study. Each patient was treated under local anaesthesia with LS (10 gr/100 ml), applied two minutes before the procedure. TPB was performed with the patient in the left lateral decubitus using multi-frequency convex probe “end-fire”. Two experienced urologists performed a 14-core biopsy, as first intention. After the procedure each patient was given a verbal numeric pain scale (VNS). The evaluation was differentiated in two scales VNS: VNS 1 for the insertion of the probe and the manoeuvres associated, while VNS 2 only for the pain during needle’s insertion. Results: Pain scores were not statistically significant different with regard to the values of PSA and prostate gland volume. Pain score levels during probe insertion and biopsy were significantly different: the mean pain score according to VNS was 3.3 (2-8) in the first questionnaire (VNS1) (p < 0.001) and 2.1 (1-7) in the second one (VNS2) (p < 0.125). The 8.2% of cases referred severe or unbearable pain (score ≥ 7), 74% of patients referred no pain at all. Only 21 patients would not ever repeat the biopsy or would request a different type of anaesthesia, while 82% of them would repeat it in the same way. In only eight patients we have not been able to insert TRUS probe. Conclusions: Our pain score data suggest that LS provides efficient patient comfort during TPB reducing pain both during insertion of the probe and the needle. This non-infiltrative anaesthesia is safe, easy to administer, psychologically well accepted by patients and of low cost.