Clinical Trial

ORI and ETCO₂ Relationship With Arterial Blood Gas During Apnea Test

Completed
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Summary
This observational study aims to evaluate the relationship between the Oxygen Reserve Index (ORI) and End-Tidal Carbon Dioxide (ETCO2) values with arterial blood gas parameters in patients undergoing the apnea test for the diagnosis of brain death. The study will examine the correlation between ORI and PaO2, as well as between ETCO2 and PaCO2. The primary objective is to assess the effectiveness of ORI in evaluating oxygenation and its applicability in the apnea test. The study will also evaluate the routine use of ORI in monitoring PaO2 and its potential benefits compared to traditional methods.
Protocol Amendment History 3 amendments
This ClinicalTrials.gov record has been amended 3 times since 2025-05-14; most recent amendment 2026-04-21.
Status change: Recruiting → Completed 2025-09-18
Trial Details
NCT Number NCT06983990
Lead Sponsor Bursa Yuksek Ihtisas Training and Research Hospital
Conditions Brain Death
Enrollment 35 participants
Start Date 2023-07-01
Primary Completion 2025-06-01 (estimated)
Study Completion 2025-06-01 (estimated)
Updated on ClinicalTrials.gov 2026-04-22