نتایج جستجو برای: low ventricular ejection fraction
تعداد نتایج: 1457986 فیلتر نتایج به سال:
This case displays limited utility of left ventricular ejection fraction to detect acute graft failure due to microvascular vasculopathy and suspected humoral rejection. Despite severe and progressive graft failure, clinically and by right heart catheterizations, left ventricular ejection fraction remained unchanged, indicating need of more reliable noninvasive methods for graft function survei...
Background and Objective: Off pump coronary artery bypass graft can be done with or without using intracoronary shunt. We have compared these two methods in early postoperative period, in this study. Materials and Methods: 208 candidate patients for off pump coronary artery bypass graft were devided in to two groups randomly for using intracoronary shunt or not. Variables including peri and pos...
The vast majority of patients with severe calcified aortic stenosis (AS) have normal left ventricular (LV) ejection fraction, even in the presence of symptoms. Nevertheless, ≈20% of patients with AS and undergoing valve surgery were found with reduced LV ejection fraction (,50%) in the last Euro Heart Survey. This characteristic is often the result of a concomitant coronary artery disease. In s...
To determine the possible relationship between left ventricular dilatation and heart rate changes provoked by the Valsalva maneuver (Valsalva ratio), we studied 9 patients with isolated chronic aortic insufficiency. Left ventricular systolic function was assessed by two-dimensional echocardiography and cardiac catheterization. All patients were asymptomatic (functional class I of the New York H...
BACKGROUND Small studies have yielded divergent results for administration of granulocyte colony-stimulating factor (G-CSF) after acute myocardial infarction. Adequately powered studies involving patients with at least moderate left ventricular dysfunction are lacking. METHODS Patients with left ventricular ejection fraction less than 45% after anterior-wall myocardial infarction were treated...
the aim of this study was to assess the effect of spinal block with low dose of bupivacaine and sufentanil on patients with low cardiac output who underwent lower limb surgery. fifteen patients who had ejection fraction less than 40% (group 1) were compared with 65 cases with ejection fraction more than 40% (group 2) in our study. our subjects underwent spinal block with 7.5 mg hyperbaric bupiv...
OBJECTIVE To compare the methods of right ventricle segmentation in the short-axis and 4-chamber planes in cardiac magnetic resonance imaging and to correlate the findings with those of the tricuspid annular plane systolic excursion (TAPSE) method in echocardiography. MATERIAL AND METHODS We used a 1.5T MRI scanner to study 26 patients with diverse cardiovascular diseases. In all MRI studies,...
INTRODUCTION AND OBJECTIVES Although it is known that the presence of myocardial viability predicts an increase in ejection fraction after revascularization in patients with ischemic cardiomyopathy, little is known about other predictive factors. The aim of this study was to identify variables that can predict an increase in ejection fraction after coronary revascularization surgery in patients...
BACKGROUND Simpson ejection fraction, wall motion score index, atrioventricular (AV) plane displacement and fractional shortening are all established formal echocardiographic methods for the assessment of left ventricular systolic function. Visually estimated (eyeballing) ejection fraction may be considered somewhat more subjective, although shown to correlate well with radionuclide ventriculog...
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