Tramadol group:Use tramadol for pain relief

2 trials

Sponsors

Tianjin Medical University General Hospital

Conditions

Postoperative nausea and vomiting

Phase 4

The effect of tramadol on the incidence of nausea and vomiting after gastrointestinal endoscopy under general anesthesia

Active, not recruitingChiCTR2500111433

Tianjin Medical University General HospitalPostoperative nausea and vomiting

Start: 2025-11-03Updated: 2025-11-03

Unknown Phase

A Comparative Study on the Analgesic Effects and Adverse Reactions of Tramadol and Pentazocine in artificial abortion surgery under general anesthesia

Active, not recruitingChiCTR2500111150

Tianjin Medical University General HospitalPostoperative nausea and vomiting

Start: 2025-10-27Updated: 2025-11-03