This prospective randomized controlled clinical trial evaluated the effects of bilateral erector spinae plane block (ESPB) on postoperative systemic functions in adult patients undergoing elective open-heart surgery via median sternotomy. Sixty-six participants were randomized to receive either bilateral ultrasound-guided ESPB before anesthesia induction or standard intravenous opioid analgesia. Postoperative outcomes-including pain scores, rescue analgesic requirements, hemodynamic parameters, respiratory variables, and laboratory values-were monitored for forty-eight hours. The study was conducted to determine whether ESPB provides improved postoperative pain control and supports systemic recovery compared with intravenous opioid-based analgesia.
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Postoperative Pain Intensity (NRS Score)
Timeframe: First 12 hours after extubation (measured at 1, 6, and 12 hours)