736 Mechanism behind pre- and postejection velocity spikes in normal left ventricular myocardium
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چکیده
منابع مشابه
Mechanisms of Preejection and Postejection Velocity Spikes in Left Ventricular Myocardium Interaction Between Wall Deformation and Valve Events
Background—Normal left ventricular myocardium demonstrates distinct spikes in the velocity trace before and after left ventricular ejection. We tested the hypothesis that the preejection and postejection velocity spikes reflect early systolic shortening and late systolic lengthening that are interrupted by mitral and aortic valve closure, respectively. Methods and Results—In 11 anesthetized dog...
متن کاملLetter by Sengupta et al regarding article, "Mechanisms of preejection and postejection velocity spikes in left ventricular myocardium: interaction between wall deformation and valve events".
BACKGROUND Normal left ventricular myocardium demonstrates distinct spikes in the velocity trace before and after left ventricular ejection. We tested the hypothesis that the preejection and postejection velocity spikes reflect early systolic shortening and late systolic lengthening that are interrupted by mitral and aortic valve closure, respectively. METHODS AND RESULTS In 11 anesthetized d...
متن کاملQuantification of left ventricular systolic function by tissue Doppler echocardiography: added value of measuring pre- and postejection velocities in ischemic myocardium.
BACKGROUND Tissue Doppler imaging (TDI) is a potentially powerful method for diagnosing myocardial ischemia. This study was designed to investigate how velocity patterns in ischemic myocardium relates to regional function, and to determine whether timing of velocity measurements relative to ejection and isovolumic phases may increase the diagnostic power of TDI. METHODS AND RESULTS In 17 open...
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Background: In certain conditions, there is a need for a specific and improved measure of cardiac performance. Routine methods for assessing left ventricular (LV) function are based on image-analysis or right heart monitoring which do not allow evaluation of ventriculo-arterial interaction. Chen et al presented a noninvasive method allowing measurement of end-systolic pressure–volume relation ...
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Background & Aims: One of the important aims of quantitative cardiac image processing is the clarification of myocardial motions in order to derive biomechanical behavior of the heart in the disease condition. In this study we presented a computerized analysis method for detecting the instantaneous myocardial changes by using 2D echocardiography images. Methods: The analysis was performed on th...
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ژورنال
عنوان ژورنال: European Journal of Echocardiography
سال: 2006
ISSN: 1525-2167
DOI: 10.1016/s1525-2167(06)60459-9