Oxygen Reserve Index-Guided Oxygen Titration During Surgery in the Beach Chair Position (NCT07404267) | Clinical Trial Compass
Not Yet RecruitingNot Applicable
Oxygen Reserve Index-Guided Oxygen Titration During Surgery in the Beach Chair Position
Turkey (Türkiye)80 participantsStarted 2026-02-15
Plain-language summary
This study aims to evaluate whether guidance by the Oxygen Reserve Index (ORi) improves inspiratory oxygen fraction (FiO₂) titration compared with conventional pulse oximetry (SpO₂)-guided oxygen administration in adult patients undergoing surgery in the beach chair position.
Oxygen therapy is routinely used during general anesthesia to prevent hypoxemia; however, excessive oxygen administration may result in hyperoxia, which has been associated with adverse cardiovascular and pulmonary effects. Standard pulse oximetry may not adequately detect hyperoxia when oxygen saturation values are high.
In this prospective comparative study, patients will receive oxygen titration guided either by SpO₂ alone or by combined ORi and SpO₂ monitoring. The primary outcome is the incidence of intraoperative hyperoxemia, assessed by arterial blood gas analysis. Secondary outcomes include intraoperative oxygenation parameters and hemodynamic variables.
Who can participate
Age range
18 Years – 65 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Adult patients aged 18 to 65 years
* American Society of Anesthesiologists (ASA) physical status I-III
* Scheduled for elective orthopedic surgery in the beach chair position
* Body mass index (BMI) \<35 kg/m²
* Ability to provide written informed consent
Exclusion Criteria:
* Age \<18 or ≥65 years
* Finger deformities preventing the use of Oxygen Reserve Index (ORi) monitoring
* Severe anemia (hemoglobin \<8 g/dL)
* Pregnancy
* Refusal or inability to provide informed consent
* History of stroke or significant vascular pathology
* Severe cardiac or respiratory disease
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Incidence of Intraoperative Severe Hyperoxemia
Timeframe: Perioperative/Periprocedural
Trial details
NCT IDNCT07404267
SponsorFatih Sultan Mehmet Training and Research Hospital