نتایج جستجو برای: diastolic indices
تعداد نتایج: 120327 فیلتر نتایج به سال:
Background and purpose: Doppler sonography is a noninvasive diagnostic procedure with no side effect witch is cost effective and the results are rapidly available. Two indices are explained in the field of Doppler sonographic hemodynamic evaluation, PÏ* and RÏ**, Âbnormal ranges are PÏ ≥ 1.8 and RÏ ≥ 0.7 . Ïn previous studies average PÏ in normal conditions was 1.5 and in rejected trans...
This prospective study was completed to determine the influence of epidural anaesthesia on the fetoplacental circulation of normal subjects. Thirty-seven normal pregnant patients at term, undergoing elective Caesarean section, had Doppler measurements of the fetal umbilical artery blood flow velocity before and after epidural anaesthesia using lidocaine 2% without epinephrine. There were no dif...
In forty-one essential hypertensive (EHT) patients with and without left ventricular hypertrophy (L VH), the left ventricular (L V) contractile performance was determined noninvasively using echocardiography. Classification was made with respect to the L VH, as measured by the sum of end-diatolic posterior wall thickness and interventricular septal thickness, and the presence of ST-T changes on...
The sympathetic overdrive that characterizes essential hypertension is potentiated when left ventricular hypertrophy or congestive heart failure is detected. No information exists, however, on whether this is the case also for left ventricular diastolic dysfunction. In 17 untreated hypertensive subjects with left ventricular diastolic dysfunction (age: 47.7 2.9 years, mean SEM), we measured sym...
This study evaluated the significance of aortic calcification index (ACI), an estimate of abdominal aortic calcification by plain abdominal computed tomography (CT), in terms of left ventricular (LV) diastolic dysfunction, mortality, and nonfatal cardiovascular (CV) events in chronic hemodialysis patients. Hemodialysis patients who took both an abdominal CT and echocardiography were divided int...
BACKGROUND Diastolic fractional flow reserve (dFFR) has been shown to be highly sensitive for detection of inducible myocardial ischemia. However, its reliance on measurement of left-ventricular pressure for zero-flow pressure correction, as well as manual extraction of the diastolic interval, has been its major limitation. Given previous reports of minimal zero-flow pressure at end-diastole, w...
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