Left Ventricular Mechanics During Exercise: A Doppler and Tissue Doppler Study
نویسندگان
چکیده
منابع مشابه
Left ventricular mechanics during exercise: a Doppler and tissue Doppler study.
AIMS To study left ventricular mechanics of exercise with Doppler and tissue Doppler. METHODS AND RESULTS Twenty-one males (mean age, 26; height, 184 cm; weight, 84 kg), exercised on a bicycle, with increasing workload, with oxygen uptake, Doppler flow and tissue Doppler recordings during exercise. There was correlation between peak systolic LVOT flow and annulus velocity; R=0.72, (p<0.001) a...
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Hypoxia has been reported to alter left ventricular (LV) diastolic function, but associated changes in right ventricular (RV) systolic and diastolic function remain incompletely documented. We used echocardiography and tissue Doppler imaging to investigate the effects on RV and LV function of 90 min of hypoxic breathing (fraction of inspired O(2) of 0.12) compared with those of dobutamine to re...
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BACKGROUND The cascade of events by which early diastolic left ventricular (LV) filling increases with exercise is not fully elucidated. Doppler tissue imaging (DTI) can detect myocardial motion, including torsion, whereas color M-mode Doppler (CMM) can quantify LV intraventricular pressure gradients (IVPGs). METHODS AND RESULTS Twenty healthy volunteers underwent echocardiographic examinatio...
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BACKGROUND Noninvasive assessment of diastolic filling by Doppler echocardiography provides important information about left ventricular (LV) status in selected subsets of patients. This study was designed to assess whether mitral annular velocities as assessed by tissue Doppler imaging are associated with invasive measures of diastolic LV performance and whether additional information is gaine...
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ژورنال
عنوان ژورنال: European Journal of Echocardiography
سال: 2003
ISSN: 1525-2167
DOI: 10.1016/s1525-2167(03)00008-8