(Circulation. 2009;119:1146-1157.)
© 2009 American Heart Association, Inc.
Contemporary Reviews in Cardiovascular Medicine |
From Methodist DeBakey Heart and Vascular Center, Houston, Tex.
Correspondence to Sherif F. Nagueh, MD, Methodist DeBakey Heart and Vascular Center, 6550 Fannin, SM 677, Houston, TX 77030. E-mail snagueh@tmhs.org
Key Words: diastole heart failure hemodynamics ventricles
An extract of the first 250 words of the full text is provided, because this article has no abstract. |
| Introduction |
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There are several opinions about the pathophysiology of this condition that have been expressed passionately by many groups. They include issues pertaining to left ventricular (LV) systolic properties, ventricular arterial coupling, and last but not least, LV diastolic function. Recent studies that used novel imaging modalities and others that used conductance catheters in DHF patients have provided additional data that are pertinent to the ongoing debate and have potential therapeutic implications. However, before discussing the recent studies, it is important to comment on certain morphological characteristics in DHF patients that are distinct from those in patients with systolic heart failure. In particular, LV dimensions and volumes are normal in DHF patients,2 whereas wall thickness and LV mass are increased, although the latter finding is not universal. In an exception to the above findings, a recent study3 reported that LV end-diastolic volumes were increased in DHF patients. However, a single M-mode measurement was used to convert LV
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