Bilateral parasternal and rectus sheath blocks reduce pain post-cardiac surgery: a pilot trial.

Objective: This study aimed to investigate the effects of ultrasound-guided bilateral parasternal block (PSB) combined with rectus sheath block (RSB) on postoperative recovery quality in patients undergoing median sternotomy for cardiac surgery.

Methods: Eighty patients were randomly assigned to either the intervention group (receiving PSB + RSB,  = 40) or the control group (not receiving PSB + RSB,  = 40). The primary outcome was opioid consumption within the first 24 h postoperatively.