Indexing peak rapid filling velocity to both relaxation and filling volume to estimate left ventricular filling pressures
نویسندگان
چکیده
منابع مشابه
Pressure relaxation of the left ventricle and filling pressures.
going dobutamine-stress (2). However, the PET technique enabled us to detect very early changes in myocardial blood flow before these clinical signs of ischemia eventually developed. Since we know that the presence of clinical signs of ischemia are inconsistent, subjective and variable in the same patient, we decided to focus on quantifiable, regional measures of myocardial blood flow. In contr...
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BACKGROUND Diastolic strain rate (SR) measurements that comprise all left ventricular (LV) segments are advantageous over myocardial velocity for assessment of diastolic function. Mitral early diastolic velocity (E)/SR ratio during the isovolumetric relaxation (IVR) period can be used to estimate LV filling pressures. METHODS AND RESULTS Simultaneous echocardiographic imaging and LV pressure ...
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In 7 conscious dogs, left ventricular diastolic volume (V) was estimated by taking biplane cineradiographs with the left ventricular cavity previously outlined by permanent radiopaque markers. Left ventricular pressure (P) was measured with an implanted miniature transducer. There were two rapid filling periods during early and late diastole; little filling occurred during the middle third of d...
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Peak rapid filling rate (PRFR) is often used clinically as an index of left ventricular relaxation, i.e., of early diastolic function. This study tests the hypothesis that early filling rate is a function of the atrioventricular pressure difference and hence is influenced by the left atrial pressure as well as by the rate of left ventricular relaxation. As indexes, we chose the left atrial pres...
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The aim of the present study was to assess the ability of several echocardiographic and TDI (tissue Doppler imaging) parameters to predict an elevated LVEDP (left ventricular end-diastolic pressure) in patients with abnormal relaxation. Eighty-two consecutive patients presenting with an E /A ratio (ratio of early-to-late diastolic peak transmitral velocity) <0.9 scheduled for left heart cathete...
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ژورنال
عنوان ژورنال: European Heart Journal - Cardiovascular Imaging
سال: 2018
ISSN: 2047-2404,2047-2412
DOI: 10.1093/ehjci/jey154