Near-Infrared Spectroscopic (NIRS) Tissue Oxygen Saturation and the Vascular Occlusion Test in Cardiac Surgery Patients
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Tissue oxygen saturation (StO2) and its recovery during a vascular occlusion test (VOT) will be measured in elective cardiac surgery patients undergoing cardiopulmonary bypass using a non-invasive near infrared spectrometry (NIRS) machine. The purpose of this study is to determine whether changes in VOT measurements occur in patients during cardiac surgery.
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Ages Eligible for Study:
18 Years and older (Adult, Senior)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
Elective cardiac surgery patients undergoing coronary artery bypass and valve surgery using cardiopulmonary bypass.
Adult, elective cardiac surgery patients
Procedure using cardiopulmonary bypass
Contraindication to pneumatic cuff inflation
Significant peripheral vascular disease of the arms