1Department of Clinical Laboratory, Fujita Health University Hospital, 2Department of Medical Information Technology in Junior College, Fujita Health University, 3School of Health Sciences Faculty of Radiological Technology, Fujita Health University, 4Department of Cardiology, Fujita Health University School of Medicine
The purpose of this study was to evaluate visually estimated ejection fraction (EF) by comparing it with EF measured by three-dimensional echocardiography (3DE-EF) . Ninety-seven patients with sinus rhythm (aged 62.9±13.9 years) were studied, including 21 patients whose EF was evaluated by helical computed tomography (HCT-EF) . 3DE-EF was significantly correlated with HCT-EF (r=0.92, 95% CI=7.7±14.9%) . In comparison with 3DE-EF as the gold standard, visual EF had a better correlation (r=0.88, 95% CI=−2.0±13.5%) than bp-EF (r=0.83, 95% CI=0.1±14.2%) in subjects with left ventricular (LV) asynergy. These findings suggest that 3DE-EF or visual EF would be more appropriate than bp-EF in evaluating EF in patients with LV asynergy. Visual EF would be more practical because of its facility. However, visual EF requires a technician with a certain degree of experience.