Intravesical Ropivacaine as a Novel Means of Analgesia Post–Robot-Assisted Radical Prostatectomy: A Randomized, Double-Blind, Placebo-Controlled Trial

摘要

PURPOSE: This study evaluates the safety and efficacy of intravesical ropivacaine as part of a mulitimodal approach to the provision of analgesia after robot-assisted radical prostatectomy (RARP). PATIENTS AND METHODS: In this double-blind, placebo-controlled trial, 40 patients who were scheduled to undergo RARP for treatment of localized prostate cancer by a single surgeon (SP) were randomized 1:1 to receive either alkalinized intravesical ropivacaine or placebo (0.9% sodium chloride) at the completion of the vesicourethral anastomosis. A standardized general anesthetic was administered in each case. The primary outcome was a reduction in postoperative pain as assessed by a visual analogue scale (VAS). The need for alternate analgesic agents was recorded. Adverse events related to the administration of intravesical ropivacaine were documented prospectively. RESULTS: No serious adverse events related to the administration of intravesical ropivacaine were identified. In the ropivacaine group, there was a significant reduction in the cumulative needed dose of ketoralac relative to placebo at 6 hours postoperatively. There was no statistically significant difference between the groups with regard to pain scores or narcotic use at any time point. CONCLUSIONS: Intravesical administration of ropivacaine may be used safely in the context of RARP and is associated with a significant, albeit modest reduction in the need for supplementary analgesic agents, but did not result in a decrease in postoperative pain scores.