Effect of Erector Spinae and External Oblique Intercostal Plane Blocks on Postoperative Diaphragmatic Excursion and Analgesic Outcomes in Patients Undergoing Sleeve Gastrectomy: A Randomized Controlled Study

INTERVENTION: CONDITION: ; Anaesthesia PRIMARY OUTCOME: Ultrasound‐assessed postoperative diaphragmatic excursion SECONDARY OUTCOME: • Opioid‐Related Adverse Effects • Pain intensity (VAS, 0–100 mm) at rest, on coughing • Quality of recovery (QoR‐15) • Respiratory Outcomes: incidence of postoperative hypoxemia (SpO2 < 92% on room air or oxygen), need for postoperative respiratory support (CPAP / high‐flow nasal oxygen), incentive spirometry performance and respiratory rate • Time to first rescue analgesia • Total postoperative opioid consumption INCLUSION CRITERIA: Adults 18–64 years old, Both sexes ASA I–II, scheduled for laparoscopic sleeve gastrostomy