Usefulness of left atrial volume in predicting first congestive heart failure in patients > or = 65 years of age with well-preserved left ventricular systolic function.
ABSTRACT Left atrial (LA) volume is a barometer of diastolic dysfunction. Whether it predicts congestive heart failure (CHF) in patients with preserved left ventricular (LV) systolic function is not known. Olmsted County, Minnesota, residents aged > or = 65 years referred for transthoracic echocardiography from 1990 to 1998, who were in sinus rhythm without a history of CHF were followed in the medical records to 2003 (mean follow-up duration 4.3 +/- 2.7 years). Of the 1,495 patients identified, 1,375 (92%) with LV ejection fractions > or = 50% (mean age 75 +/- 7 years; 59% women) constituted the study population, 138 (10%) of whom developed CHF. Baseline LA volume > or = 32 ml/m2 was an independent predictor of first CHF (p <0.001). Of the 138 patients who had first CHF, ejection fractions were assessed within 4 weeks of diagnosis in 98 subjects, 74 (76%) of whom had ejection fractions remaining at > or = 50%, with a mean increase in LA volume of 8 +/- 10 ml/m2 (p <0.001) from baseline. The age-adjusted CHF-free survival rates for LA volume tertiles (< 28, 28 to < or = 37, and > 37 ml/m2) were 95%, 91%, and 83%, respectively (p <0.001). In conclusion, LA volume independently predicted first CHF in an elderly cohort with well-preserved LV systolic function.
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ABSTRACT: The rapid technological developments of the past decade and the changes in echocardiographic practice brought about by these developments have resulted in the need for updated recommendations to the previously published guidelines for cardiac chamber quantification, which was the goal of the joint writing group assembled by the American Society of Echocardiography and the European Association of Cardiovascular Imaging. This document provides updated normal values for all four cardiac chambers, including three-dimensional echocardiography and myocardial deformation, when possible, on the basis of considerably larger numbers of normal subjects, compiled from multiple databases. In addition, this document attempts to eliminate several minor discrepancies that existed between previously published guidelines. Copyright © 2015 American Society of Echocardiography. Published by Elsevier Inc. All rights reserved.Journal of the American Society of Echocardiography: official publication of the American Society of Echocardiography 03/2015; 28(1):1-39.e14. DOI:10.1016/j.echo.2014.10.003 · 3.99 Impact Factor
Journal of Cardiothoracic and Vascular Anesthesia 10/2014; 28(6). DOI:10.1053/j.jvca.2014.06.005 · 1.48 Impact Factor
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ABSTRACT: A precise diagnosis of diastolic dysfunction is often difficult and requires invasive techniques to determine left ventricular volume, relaxation, and compliance properties. At this current point of time there is no single non-invasive index available to adequately reflect diastolic function, perhaps because of the numerous factors that can alter diastolic function. In most clinical settings, diastolic function is estimated using Doppler echocardiography. Cardiac magnetic resonance imaging (CMRI) is yet another emerging modality for diastolic function analysis. Here we present a comprehensive review of the various parameters used to assess diastolic function as part of diagnosis of clinical syndrome "Heart failure with preserved ejection fraction (HFPEF)".