What this means
This is a trial plan that has not reported results yet. It will check whether an oxygen reading gives earlier warning than standard tools in older surgery patients.
Plain-English summary written by an AI model from the registry listing.
- Status
- Recruiting
- Who can join
- Ages 65–100
- Where
- 1 site
The science
- Registered title
- The Effectiveness of Oxygen Reserve Index in Early Detection of Desaturation in Geriatric Patients Scheduled for Oncological Surgery
- Trial ID
- NCT07326293 ↗
- Phase
- Not applicable
- Study type
- observational
- Conditions
- Desaturation, Apnea, Hypoxia, Oxygen Reserve Index
- Sponsor
- Ankara City Hospital Bilkent
- Ages
- 65 Years to 100 Years
- Dates
- First posted Jan 8, 2026 · updated Jan 8, 2026
Registry summary
This prospective observational study aims to evaluate the relationship between the Oxygen Reserve Index (ORI) and tolerable apnea time in geriatric patients undergoing elective oncologic surgery under general anesthesia.
Patients aged 65 years and older will be monitored using standard anesthesia monitoring and Masimo Rainbow SET® Pulse CO-Oximetry during anesthesia induction and tracheal intubation.
Tolerable apnea time will be defined as the duration from the end of ventilation after intubation to a decrease in peripheral oxygen saturation (SpO₂) to 94%.
The primary objective is to assess the association between ORI warning time and tolerable apnea time. Secondary objectives include evaluating the association between ORI values, arterial blood gas parameters at predefined time points, and the Clinical Frailty Scale.
Sites (1)
- Ankara Bilkent City Hospital, Ankara, Çankaya, Turkey (Türkiye)