Impact of Pressure Recovery Adjustment on Aortic Valve Area Classification of Disease Severity in Transcatheter Aortic Valve Replacement Patients

The presence of pressure recovery (PR) in aortic stenosis (AS) was first appreciated with the use of Doppler in the early 1980 ’s. 1 PR has been described as the reconversion of kinetic energy to potential energy as the blood passes through the stenotic aortic valve (AV) into the proximal ascending aorta. PR partially explains the discrepancy between pressure gradients measured by direct heart catheterization and Doppler echocardiography. 2,3 The application of the energy loss coefficient (ELCO) overcomes this discrepancy by considering the energy conversion beyond the stenotic AV.
Source: Journal of Cardiothoracic and Vascular Anesthesia - Category: Anesthesiology Authors: Tags: Original Article Source Type: research