Effect of Intraoperative Dexmedetomidine on Postoperative Pain in Elderly Patients Undergoing Major Abdominal Surgery: a Secondary Analysis Based on Prospective Data

This study is a secondary analysis of multicenter prospective data, including elderly patients who underwent elective major abdominal surgery between April 2020 and April 2022 from a perioperative database of elderly patients in China. This study aims to evaluate the impact of intraoperative dexmedetomidine on chronic postoperative pain in elderly patients undergoing major abdominal surgery, with a comprehensive analysis of pain across multiple dimensions.

NCT Number	NCT07744308
Lead Sponsor	Chinese PLA General Hospital
Conditions	Chronic Postoperative Pain
Enrollment	2,754 participants
Start Date	2020-04-01
Primary Completion	2024-04-30 (estimated)
Study Completion	2024-04-30 (estimated)
Updated on ClinicalTrials.gov	2026-08-04