BACKGROUND The complete reentrant circuit for ablation of reentrant ventricular tachycardia (VT) in humans can rarely be localized by mapping. As a result, surrogate markers, such as diastolic electrical activity, subsequently confirmed by entrainment, have been used. However, ablation at those sites has had variable efficacy. The reasons for this variability are not clear. METHODS AND RESULT...

Methods Forty two patients referred for transesophageal echocardiography (TEE) were prospectively included. All TEE studies were performed with a three-dimensional transesophageal probe. For full-volume images, 4 gated beats were acquired for offline analysis. The cardiac cycle was divided in proto-systole (S1), mid-systole (S2) and tele-systole (S3) and proto-diastole (D1), mid-diastole (D2) a...

background gestational hypertension is one of the three common causes of maternal death. this study was designed to compare the effects of aspirin and placebo on 24 hour blood pressure mean in women at risk of preeclampsia in two different diurnal times to prevent preeclampsia. methods sixty four women who were at risk of gestational hypertension were recruited to be included in the study using...

background: patients suffering from major beta thalassemia need frequent blood transfusions and, if not treated well, would be at risk of heart dysfunction. this study was performed to determine the diagnostic value of electrocardiography versus echocardiography in measuring the left ventricular mass index in these patients. methods: between july 2010 and june 2011, 82 asymptomatic patients ove...

Gated radionuclide cardiac blood pool scans (GCS) of end-systole and end-diastole or eight images subtending the entire cardiac cycle were performed on seven patients with left atrial myxomas documented by pulmonary cineangiography with left atrial follow-through. The ethocardiogram was either suggestive or diagnostic in all patients. In addition to demonstration of the tumor (6 patients), the ...