Early Oral Hydration in Relieving Postoperative Thirst

Inclusion Criteria: 1. Male and female patients aged 18-65 years. 2. Scheduled for elective urological endoscopic procedures under general anesthesia. 3. Day-care endoscopic procedures. 4. ASA classification I-III. Exclusion Criteria: 1. Known gastrointestinal disorders contraindicating early oral hydration (e.g., peptic ulcer disease, hiatal hernia, irritable bowel syndrome, esophagitis, or prior gastrointestinal surgery). 2. Inability to express thirst or communicate (e.g., language barrier, altered consciousness). 3. Requirement for nasogastric suction. 4. History of facial, oropharyngeal, or laryngeal surgery. 5. Swallowing dysfunction or delayed gastric emptying (e.g., gastroparesis). 6. Incomplete reversal of muscle relaxant at PACU admission (no adequate spontaneous breathing or protective airway reflexes).