Preoperative Performance Indicators, Preoxygenation and Oxygen Reserve Relationship

Sponsor
Ankara City Hospital Bilkent
Study ID
NCT07688941
Status
Not Yet Recruiting

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Conditions

  • Handgrip Strength Test
  • Preoxygenation
  • Sarcopenia

Eligibility Criteria

Sex
ALL
Age
18 Years - N/A
Healthy Volunteers
Accepted

Study Details

The goal of this observational study is to evaluate the relationship between preoperative cardiopulmonary performance indicators and preoxygenation efficiency along with oxygen reserve depletion in patients scheduled for elective surgery under general anesthesia. The main questions it aims to answer are: What is the relationship between Hand Grip Strength (HGS) and the time taken for end-tidal oxygen (EtO\_2) to reach 90% during preoxygenation? What is the relationship between the 6-Minute Walk Test (6MWT) distance and the Oxygen Reserve Index (ORI) depletion time during the apnea period? Participants will be asked to perform the following tasks during their preoperative and intraoperative care: Complete a 6-Minute Walk Test (6MWT) to determine preoperative functional capacity. Perform a Hand Grip Strength (HGS) test using a calibrated hand dynamometer to measure muscle strength. Undergo standardized preoxygenation with 100% oxygen via a tight-fitting face mask in the operating room while end-tidal oxygen (EtO\_2) and Oxygen Reserve Index (ORI) levels are continuously monitored.

Key Dates

First listed
Jul 7, 2026
Start date
Jul 5, 2026
Status verified
Jun 2026
Primary completion
Sep 30, 2026
Completion
Dec 3, 2026

Study Design

Enrollment
120 participants (estimated)

Arms

  • Arm: Surgical Patients Evaluated for Cardiopulmonary Performance

Primary Outcome Measure

Preoxygenation Efficiency (EtO_2 Time) [ Time Frame: From the initiation of preoxygenation (0 seconds) until the EtO_2 values reach 90% (typically within 3 to 5 minutes before anesthesia induction) ]

Central Contacts

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