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ECHONOMY
Tools for Echocardiographic Calculations

Muhamed Saric, MD, PhD
New York University

 

AR Index


Aortic Regurgitation (AR) Index Post TAVR

bulletA pressure index based on invasive intracardiac and arterial blood pressures.
bulletThe more severe the aortic regurgitation post TAVR, the lower the value of the AR index
 

Formula

AR index = (DPB - LVEDP) / SBP
DBP, diastolic blood pressure; LVEDP, left ventricular end-diastolic pressure; SBP, systolic blood pressure (all pressures expressed in mm Hg).
 

Figure

Reference Values

Reference

Sinning JM, Hammerstingl C, Vasa-Nicotera M, et al. Aortic regurgitation index defines severity of peri-prosthetic regurgitation and predicts outcome in patients after transcatheter aortic valve implantation. J Am Coll Cardiol 2012;59:113441.