CompletedNot Applicable

Can Atelectasis Be Prevented With Oxygen Reserve Index (ORI) Monitoring?

Turkey (Türkiye)58 participantsStarted 2025-07-15

Plain-language summary

This single-center randomized controlled trial aims to evaluate whether intraoperative monitoring using the Oxygen Reserve Index (ORI) reduces the incidence of postoperative atelectasis, as assessed by lung ultrasound (LUS), in adult patients undergoing elective robotic surgery under general anesthesia.

Who can participate

Age range18 Years – 75 Years

SexALL

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Inclusion Criteria: * American Society of Anesthesiologists Physical Status Classification System (ASA) physical status I-III * Elective robotic surgery under general anesthesia * Surgery duration \>2 hours * Requires invasive arterial cannulation * Signed informed consent Exclusion Criteria: * ASA IV or higher * Room air SpO₂ \<92% * Chronic pulmonary disease * Hemoglobinopathy * Pregnancy * Refusal to participate

What they're measuring

Postoperative LUS score at 30 min

Timeframe: At 30 minutes following tracheal extubation at the end of surgery

Trial details

NCT IDNCT07050719

SponsorAntalya Training and Research Hospital

Sponsor typeOTHER_GOV

Study typeINTERVENTIONAL

Primary completion2025-12-08

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