Ultrasound-guided <i>versus</i> neurostimulation-guided bilateral transperineal pudendal nerve block for analgesia in outpatient haemorrhoid surgery: protocol for a multicentre, randomised, double-blind, non-inferiority trial.

ABSTRACT:

Background

Haemorrhoid surgery is often associated with severe postoperative pain. Bilateral transperineal pudendal nerve block, performed using anatomical landmarks or nerve stimulation, is effective and currently recommended for postoperative analgesia. However, these blind techniques carry risks such as pudendal artery puncture or rectal injury and are not always routinely performed. The ultrasound-guided transperineal pudendal nerve block has shown promise in paediatric urological surgery, appearing both effective and well tolerated, but has not yet been evaluated in proctological procedures.

Methods

This multicentre, prospective, randomised, double-blind trial aims to compare the analgesic efficacy, adverse effects, and safety of ultrasound-guided vs nerve stimul

SUBMITTER: Giral T 

PROVIDER: S-EPMC12753240 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature