Serratus- intercostal interfascial plane block in supraumbilical surgery: a prospective randomized comparison.

BACKGROUND Upper abdominal wall surgical incisions may lead to a severe postoperative pain. Therefore, adequate analgesia is important. Here we investigate whether the low serratus-intercostal interfascial plane block (SIPB) achieves an effective analgesia, considering opioids consumption, pain control and recovery quality in upper abdominal surgeries. METHODS This blinded, randomized controlled study was conducted on 102 patients undergoing open upper abdominal wall surgery under general anesthesia. All patients who received serratus-intercostal plane block at the eighth rib as analgesic technique were included in SIPB group and in control group those who received continuous intravenous morphine analgesia. Pain scores in numeric verbal scale (NVS) and opioids consumption at 0, 6, 12, 24 and 48 hours postoperatively were assessed. The quality of the postoperative recovery was evaluated using the QoR-15 questionnaire at 24 hours. RESULTS This study showed lower postoperative opioid consumption at 24 hours (P<0.0001; 4.17 mg vs. 41.52 mg of morphine) and better pain control (P<0.005) with mean pain scores (NVS 1.8±1.5 vs. 4.8±1.6) in group 0 (SIPB). The global QoR-15 scores 24 hours postoperatively were higher (better quality) in the SIPB group (122 vs. 100). CONCLUSIONS The low serratus-intercostal interfascial plane block (SIPB) provides efficient analgesia leading to a saving of opioids and improvement of the recovery quality in patients undergoing upper abdominal wall surgeries.