PRO-RSTAP: Effect of TAP and RS Blocks on Recovery After Inguinal Hernia Surgery (PRO-RSTAP)

This study is a prospective, randomized, double-blind clinical trial evaluating the effects of ultrasound-guided transversus abdominis plane (TAP) block and rectus sheath (RS) block on postoperative recovery after open inguinal hernia surgery. The study uses a 2 × 2 factorial design, with participants randomized into four groups receiving combined TAP and RS blocks, TAP block only, RS block only, or placebo blocks, in addition to standard perioperative care. The primary outcome is total perioperative opioid consumption measured as intravenous morphine equivalent dose. Secondary outcomes include postoperative pain intensity, need for rescue analgesia, postoperative nausea and vomiting, time to discharge, and unplanned hospital admission.