Postoperative SpO₂/FiO₂ Ratio and Analgesic Methods in Laparoscopic Surgery

This prospective observational study aims to evaluate the association between postoperative oxygenation, assessed by the SpO₂/FiO₂ ratio, and body mass index (BMI), STOP-BANG score, and postoperative analgesic methods in patients undergoing elective laparoscopic cholecystectomy in the reverse Trendelenburg position. Postoperative SpO₂ and FiO₂ values will be recorded within the first postoperative hour, and the SpO₂/FiO₂ ratio will be calculated. Analgesic techniques applied as part of routine clinical practice will be documented. The study does not involve any additional intervention beyond standard care. The findings are expected to contribute to a better understanding of factors associated with early postoperative oxygenation and hypoxemia risk.

NCT Number	NCT07401589
Lead Sponsor	Istinye University
Conditions	Postoperative Hypoxemia
Enrollment	100 participants
Start Date	2026-02-15
Primary Completion	2026-03-15 (estimated)
Study Completion	2026-03-31 (estimated)
Updated on ClinicalTrials.gov	2026-02-10