Effects of Rectal Indomethacin Suppository on Postoperative CRBD in Patients Undergoing LRP

Inclusion Criteria: 1. Aged 18 to 80 years old (inclusive); 2. American Society of Anesthesiologists (ASA) physical status classification Class I-III; 3. Undergoing elective laparoscopic radical prostatectomy under general anesthesia; 4. Having a clear understanding of the study, voluntarily participating, and providing informed consent signed by themselves or their family members. Exclusion Criteria: 1. Pre-existing bladder diseases, such as overactive bladder (frequency of micturition \> 3 times per night or \> 8 times within 24 hours), neurogenic bladder, and bladder outlet obstruction; 2. Postoperative status of pelvic organs or spine that affects bladder function; 3. Postoperative status of total proctocolectomy; 4. Severe cardiac insufficiency (activity tolerance \< 4 METs) or clearly diagnosed coronary heart disease; 5. Clearly diagnosed chronic obstructive pulmonary disease (COPD) or a history of asthma; 6. Hepatic insufficiency with Child-Pugh Class C; 7. Chronic kidney disease requiring dialysis; 8. Active peptic ulcer/hemorrhagic disease; 9. Body mass index (BMI) ≤ 18 kg/m² or ≥ 28 kg/m²; 10. Chronic analgesic abuse; 11. Use of other nonsteroidal anti-inflammatory drugs (NSAIDs) within one week; 12. Hypersensitivity to nonsteroidal anti-inflammatory drugs (NSAIDs); 13. Mental or neurological disorders that prevent the completion of rating scales; or cognitive impairment resulting in the loss of capacity for civil conduct.