• Jason Matos, Itzhak Kronzon, Georgia Panagopoulos, and Gila Perk.
• Non Invasive Cardiology, Lenox Hill Hospital, North Shore LIJ Health System, New York, New York, USA.
• J Am Soc Echocardiogr. 2012 Sep 1; 25 (9): 969-74.

BackgroundAssessing left ventricular function is a common indication for echocardiography. It generally requires expert echocardiographer estimation and is somewhat subjective and prone to reader discordance. Mitral annular plane systolic excursion (MAPSE) has been suggested as a surrogate measurement for left ventricular function. The aim of this study was to examine the accuracy of MAPSE for predicting left ventricular ejection fraction (EF) on the basis of a large cohort of consecutive echocardiograms.MethodsThe study design was a retrospective analysis of 600 two-dimensional echocardiographic studies performed in a single laboratory. MAPSE measurement was performed by an untrained observer and compared with the EF as determined by an expert echocardiographer. The first 300 studies served as a calibration cohort to establish an algorithm for predicting EF on the basis of MAPSE measurement. The following 300 studies served as a verification cohort to test the accuracy of the established algorithm.ResultsUsing the first 300 studies, an algorithm was developed to predict EF. Cutoff values for normal EF (≥11 mm for women and ≥13 mm for men) and severely reduced EF (<6 mm for men and women) were identified. For the intermediate-range MAPSE values, a gender-specific regression equation was calculated to generate a predicted EF. Using this algorithm, predicted EFs were determined for the 300 patients in the verification cohort. By comparing the predicted EF and the expert-reported EF, positive and negative predictive values, sensitivity (73%-92%), specificity (81%-100%), and accuracy (82%-86%) of MAPSE for predicting EF were calculated.ConclusionsMAPSE measurement by an untrained observer was found to be a highly accurate predictor of EF.Copyright © 2012 American Society of Echocardiography. Published by Mosby, Inc. All rights reserved.

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