Ultrasound-guided Ilioinguinal/Iliohypogastric Nerve Block Compared to the Combined Therapy With Spermatic Cord Block

This is a single center randomized, controlled, double-blinded, noninferiority study. Male pediatric patients who underwent inguinal herniotomy will be screened for eligibility. Patients will be randomly allocated to IINB and IINB/SCB groups with allocation ratio 1:1. The primary outcome measure will be the proportion of patients who needed rescue analgesia during the first postoperative 6 h. The secondary outcome measures will be intraoperative heart rate and mean arterial blood pressure (MAP), the postoperative pain FLACC pain scale, and intravenous paracetamol consumption, the incidence of adverse effects including hematoma, postoperative vomiting and fever.

Inclusion Criteria:Male pediatric patientsunderwent elective open unilateral inguinal herniotomyInformed written consent will be obtained from the parents or the legal guardian.Exclusion Criteria:local infection at the puncture site,bleeding disorder,allergy to amide local anesthetics,history of clinically significant cardiac, hepatic, or renal disorders.neurological dysfunction