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Myocardial Strain Analysis in Anaesthetized Coronary Artery Disease Patients During Hyperoxia and Normoxaemia — Strecho-O2  

Coronary Artery Disease Clinical Trial

Official title:
Myocardial Strain Analysis in Patients With Coronary Artery Disease at Hyperoxia and Normoxaemia Prior to Coronary Artery Bypass Graft Surgery - a Randomized Crossover Study

Clinical Trial 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.

Clinical Trial 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. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04424433
Study type Interventional
Source University Hospital Inselspital, Berne
Contact
Status Completed
Phase N/A
Start date June 1, 2020
Completion date June 4, 2021
View Details
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