Geneva, Feb. 2 -- International Clinical Trials Registry received information related to the study (ChiCTR2600117176) titled 'The Effect of Ultrasound-Guided External Oblique Intercostal Plane Block on the Quality of Postoperative Recovery and Postoperative Analgesia in Patients Undergoing Upper Abdominal Surgery' on Jan. 20.

Study Type: Interventional study

Study Design: Parallel

Primary Sponsor: General Hospital of the Eastern Theater of the Chinese People's Liberation Army

Condition: Postoperative pain

Intervention: Experimental group:Combined regional nerve block anesthesia on the basis of general anesthesia

Recruitment Status: Not Recruiting

Phase: N/A

Date of First Enrollment: 2026-01-20

Target Sample Size: Experiment...