Effect of Positive End-expiratory Pressure on Gastic Residual Volume

Inclusion Criteria: * Pediatric patients who will undergo elective outpatient minor surgery (lower abdominal and urogenital) * 1-11 years old * American Society of Anesthesiology (ASA) classification 1-2 patient groups * Patients who are fully hungry and whose fasting period is appropriate for their age and diet. Exclusion Criteria: * Patients whose fasting period is not appropriate * Acute abdominal and emergency surgeries * ASA 3-4 patient group * Patients with diseases or medication use that will affect gastric emptying time * Previous nasogastric tube placement and re-operation • Patients with known difficult airway or failure to fit the laryngeal mask