Background Fluoroscopic and electrocardiographic (ECG) criteria for the documentation of pacing lead positioning (apical and alternative sites) have been described, but data regarding their accuracy are lacking. Methods Fifty patients…
Background Atrioventricular septal defects (AVSDs) account for 7% of all congenital cardiovascular malformations. The atrioventricular septum (AVS) is the portion of the septal tissue that separates the right atrium from…
Background Echocardiography has been used to determine ventricular function, segmental wall motion abnormality, and pulmonary artery pressure before and after peak exercise. No prior study has investigated systolic and diastolic…
Background Three-dimensional (3D) transesophageal echocardiography (TEE) is more accurate than two-dimensional (2D) TEE in the qualitative assessment of mitral valve (MV) prolapse (MVP). However, the accuracy of 3D TEE in…
Background Definity (perflutren lipid microsphere) is an ultrasound contrast agent approved for use in patients with suboptimal echocardiograms to opacify the left ventricular chamber and to improve the delineation of…
Background Because of the lack of reliable echocardiographic parameters to predict recovery after surgery, the optimal timing of surgery for severe mitral regurgitation remains controversial. The aim of this study…
Background Measurement of left ventricular outflow tract (LVOT) area for estimation of aortic valve area (AVA) using two-dimensional (2D) transthoracic echocardiography (TTE) and the continuity equation assumes a round LVOT….
Background Pediatric cancer survivors who have been exposed to anthracycline (ANT) chemotherapy are an ever increasing population at risk for premature cardiac disease. Studies have shown that ANT is associated…
Background The aim of this study was to investigate whether strain Doppler echocardiography before reperfusion therapy could quantify ischemic dysfunction and predict viable myocardium in acute myocardial infarction as determined…
Background Traditional measures of cardiac function are now often normal in adolescents and young adults treated with antiretroviral therapy for human immunodeficiency virus (HIV) infection. There is, however, evidence of…
