Ilioinguinal and Iliohypogastric Nerve Block for Acute and Chronic Pain Relief After Caesarean Section: A Randomized Controlled Trial.

Background: There is an increasing cesarean section (CS) rate in Egypt. Multiple methods are used to manage pain after CS. Objectives: This study aimed to assess the effect of ultrasound-guided bilateral ilioinguinal and iliohypogastric nerve block on pain reduction after CS. Methods: We classified 64 cases of elective CS into two equal groups. The block group underwent the nerve block, and the control group did not. Postoperative pain, morphine consumption, time to analgesic request, and complications were compared between the two groups. Results: No significant difference was detected between the two groups regarding patient characteristics or operation duration. However, pain scores during rest and movement were significantly lower in the block group than in controls, especially within the first 12 hours following the operation. Morphine consumption was significantly lower in the block group (4.53 ± 1.456) in group B vs. (8.87 ± 2.013) in group C with P-value < 0.001. Time to the first rescue analgesia was significantly longer in the intervention group than in the other group (12.25 vs. 3.81 hours). Pruritis and nausea incidence was significantly higher in controls than in the block group. The incidence of chronic postoperative pain was significantly lower in the block group. Conclusions: The ilioinguinal and iliohypogastric nerve block is efficient and safe for managing postoperative pain following CS. It is associated with significant improvement of acute and chronic pain after such operations.