Geneva, Oct. 9 -- International Clinical Trials Registry received information related to the study (ChiCTR2600133708) titled 'Investigating the effect of ultrasound-guided caudal block on postoperative pain in patients undergoing minor anorectal surgery' on Sept. 30.

Study Type: Interventional study

Study Design: Parallel

Primary Sponsor: Hospital 905 of the Chinese People's Liberation Army Navy

Condition: Pain

Intervention: Group A:Nothing Group B:PCIA + 1% Lidocaine + 0.375% Ropivacaine caudal block Group C:PCIA + 1% Lidocaine + 0.2% Ropivacaine caudal block

Recruitment Status: Not Recruiting

Phase: 0

Date of First Enrollment: 2026-09-30

Target Sample Size: Group A:40;Group B:40;Group C:40;Group D:40;

Countries of Recru...