Unilateral rhomboid intercostal and subserratus plane block application for analgesia after laparoscopic cholecystectomy surgery :a quasi-experimental study.

Interfascial plane block applications can be used for postoperative pain after laparoscopic surgery. We aimed to investigate the effect of ultrasound-guided unilateral rhomboid intercostal and subserratus plane (RISS) block after laparoscopic cholecystectomy operations on the amount of analgesic use.
50 patients underwent laparoscopic cholecystectomy were included in the quasi-experimental study. Patients meeting the criteria were analyzed in two groups as experimental group (RISS block with 20 ml %0.25 bupivacaine+intravenous patient-controlled analgesia (IV-PCA) tramadol ; n = 25) and group Control (IV-PCA tramadol; n = 25).The primary outcome was the total amount of tramadol used over 24 hours.Secondary outcomes included the side effects, additional analgesic use and postoperative pain (during rest and activity) was at the 2nd, 6th, 12th, and 24th hours using the NRS scores .
Postoperative tramadol consumption at the 24 hours was significantly lower in the Group RISS than the Group Control (p0.05).
In conclusion, unilateral RISS block is an effective method for pain management after laparoscopic cholecystectomy and can be used as a part of multimodal analgesia.