Patients
infection, hernia
INFECTION, BLEEDING DIATHESIS, NEUROLOGICAL DISORDERS
A total of 76 eligible patients were recruited. The inclusion criteria were: (1) patients aged 1–5 years, regardless of sex; (2) patients with American Society of Anesthesiologists physical (ASA) status I or II; (3) patients who underwent elective open surgical repair of unilateral inguinal hernia. The exclusion criteria were: (1) repeated surgeries; (2) history of allergy to bupivacaine and other amide local anesthetics; (3) infection at the site of block needle entry; (4) bleeding diathesis; (5) neurological disorders; (6) ASA ≥ III.