Ultrasound-Guided External Oblique Intercostal Plane Block Versus Subcostal Transversus Abdominis Plane Block For Perioperative Analgesia in Laparoscopic Sleeve Gastrectomy

Inclusion Criteria: * Age from 18 to 65 years. * Both genders. * American Society of Anesthesiologists (ASA) class I or II * Body mass index (BMI) between 30-50 kg/m². * Scheduled for elective laparoscopic sleeve gastrectomy under general anesthesia. * Written informed consent from patients or surrogate decision makers. Exclusion Criteria: * Patient refusal. * Allergy to local anesthetics. * Coagulation disorders or anticoagulant therapy. * Local infection or scar at the injection site. * Severe hepatic or renal dysfunction. * Chronic opioid use or psychiatric illness interfering with pain assessment. * Conversion to open surgery or intraoperative complications requiring re-exploration.