Intraventricular early diastolic filling during acute myocardial ischemia, assessment by multigated color m-mode Doppler echocardiography.
نویسندگان
چکیده
منابع مشابه
Intraventricular early diastolic filling during acute myocardial ischemia, assessment by multigated color m-mode Doppler echocardiography.
BACKGROUND Color M-mode Doppler echocardiography has been suggested as a new noninvasive technique for assessing left ventricular diastolic function. The present study investigated intraventricular filling pattern by color M-mode Doppler in patients during percutaneous transluminal coronary angioplasty (PTCA). In a dog model of myocardial ischemia, the color M-mode flow pattern was related to i...
متن کاملAlternations in Intraventricular Filling Pattern by Color Doppler M-mode during Induced Myocardial Ischemia
It has been shown that regional myocardial ischemia during angioplasty is associated with retarded apical filling. To test the importance of retarded apical filling by color Doppler M-mode to detect ischemia during dipyridamole (DIP)stress echo we evaluated 29 patients (pts) (12 females, age 57±87 years).The high dose DIP (0.84 mg/kg over 10 min) was used. The color M mode record was used to ca...
متن کاملEstimation of diastolic intraventricular pressure gradients by Doppler M-mode echocardiography.
Previous studies have shown that small intraventricular pressure gradients (IVPG) are important for efficient filling of the left ventricle (LV) and as a sensitive marker for ischemia. Unfortunately, there has previously been no way of measuring these noninvasively, severely limiting their research and clinical utility. Color Doppler M-mode (CMM) echocardiography provides a spatiotemporal veloc...
متن کاملPhysiological early diastolic intraventricular pressure gradient is lost during acute myocardial ischemia.
A consistent pattern of intraventricular regional pressure gradients exists under physiological conditions during the rapid filling phase of diastole in the normal dog left ventricle. We hypothesized that this pressure gradient pattern is caused, in part, by early diastolic recoil of the left ventricular walls in conjunction with release of elastic potential energy stored during systole, genera...
متن کاملRegional myocardial systolic function during acute myocardial ischemia assessed by strain Doppler echocardiography.
OBJECTIVES We sought to evaluate if echocardiographic strain measurements could detect acute myocardial ischemia, and to compare this new method with myocardial velocity measurements and wall motion score index. BACKGROUND Tissue Doppler echocardiography (TDE) is a promising method for assessing regional myocardial function. However, myocardial velocities measured by tissue Doppler echocardio...
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ژورنال
عنوان ژورنال: Circulation
سال: 1993
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.88.6.2705