Myocardial Strain Analysis in Anaesthetized Coronary Artery Disease Patients During Hyperoxia and Normoxaemia
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- STATUS
- Recruiting
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- End date
- Feb 24, 2024
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- participants needed
- 106
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- sponsor
- University Hospital Inselspital, Berne
Summary
The purpose of this study is to investigate the impact of supraphysiologic oxygen (hyperoxia) on myocardial function in anaesthetized patients with coronary artery disease.
Description
Up to 106 patients with coronary artery disease undergoing elective coronary artery bypass graft (CABG) surgery will be recruited to undergo this single visit study. In the timeframe shortly after the induction of anaesthesia and prior to the start of surgery, myocardial strain as a marker of cardiac function will be measured by transesophageal echocardiography (TEE). Echocardiography measurements will be acquired at two different oxygen states for each patient. The fraction of inspired oxygen (FiO2) will be adjusted to reach a normoxaemic state (FiO2=0.3) and a hyperoxic state (FiO2=0.8). Patients will be randomized to which oxygen level is investigated first. Thereafter, the study intervention is completed and anaesthesia and surgery will be performed as planned by the treating team. Echocardiography images will be analyzed in a blinded manner for cardiac function and systolic and diastolic strain parameters. The results will help anaesthesiologists to better weigh risks and benefits when selecting an inspired oxygen fraction in such patients, and will help to evaluate hyperoxia as a risk factor for myocardial injury.
Details
| Condition | Coronary Artery Disease, Coronary heart disease, dental anesthesia, Anesthesia, Anesthesia (Local), Cardiac Ischemia, Myocardial Ischemia, sensory loss, anaesthesia, anesthesia for, anesthesia procedures |
|---|---|
| Treatment | Oxygen |
| Clinical Study Identifier | NCT04424433 |
| Sponsor | University Hospital Inselspital, Berne |
| Last Modified on | 24 January 2021 |
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