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Abstract #1209

Disagreement Between Cardiovascular Magnetic Resonance & Echo-Doppler Transvalvular Pressure Gradients

Julio Garcia1, Lyes Kadem2, Eric Larose1, Philippe Pibarot1

1Medicine, Quebec Heart & Lung Institute, Quebec, Canada; 2Mechanical & Industrial Engineering, Concordia University, Montreal, Quebec, Canada

On the current guidelines for the evaluation of aortic stenosis (AS) severity, patients are candidates for valve replacement if they have an effective orifice are (EOA) < 1.0 cm2, transvalvular pressure gradient (TPG) &#8805; 40 mmHg and symptoms. Transthoracic echocardiography (TTE) is widely used to evaluate AS, however in some cases TTE measurements could have inconsistencies. In such cases cardiovascular magnetic resonance (CMR) could confirm TTE results. The aim of this study is to investigate the inconsistencies of TTE and CMR to evaluate TPG and EOA in patients with AS.