ORI and ETCO₂ Relationship With Arterial Blood Gas During Apnea Test

Launched by BURSA YÜKSEK İHTISAS EDUCATION AND RESEARCH HOSPITAL · May 14, 2025

Keywords

ClinConnect Summary

This clinical trial is studying how certain measurements related to oxygen levels and carbon dioxide levels in the body can help during the apnea test, which is a procedure used to determine brain death. Specifically, researchers are looking at the relationship between the Oxygen Reserve Index (ORI) and End-Tidal Carbon Dioxide (ETCO2) with arterial blood gas results. The goal is to see if the ORI can effectively help doctors understand a patient's oxygen levels during this important test.

To participate in this study, individuals must be at least 18 years old and meet the necessary criteria for undergoing the brain death diagnosis process. They also need to have permission from their close family members to take part. If someone joins the trial, they can expect to have their oxygen and carbon dioxide levels monitored as part of the apnea test. The study will help determine if using ORI can provide more reliable information compared to traditional methods, potentially improving the way brain death is diagnosed.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • Patients who meet all the prerequisites for initiating the brain death diagnosis process and for whom the decision to perform the apnea test for diagnosis of brain death.
• • Patients aged 18 years or older.
• • Patients who have provided verbal and written consent from their first-degree relatives.
• Exclusion Criteria:
• • Patients whose first-degree relatives do not consent to participation in the study.
• • Patients in whom the ORI probe cannot be used due to circulatory disturbances in the extremities