[Double-orifice mitral valve -- case report].

A case of 16 year old male with an initial diagnosis of the mitral stenosis is presented. The transthoracic echocardiography showed the complete bridge type double-orifice mitral valve with a larger medial orifice.

Detachment of the right coronary artery resulting in subsequent aneurysm of the ascending aorta and pulmonary artery fistula 7 years after a bentall procedure.

This report describes detachment of the right coronary artery, an extremely infrequent late complication of Bentall's procedure combined with Cabrol's maneuver for aneurysm of the ascending aorta. This resulted in subsequent formation of the progressive aneurysm of the ascending aorta and fistula entering the main pulmonary artery. Successful surgical treatment depended on meticulous echocardiographic investigation and careful physical examination.

Left ventricular hypertrophy increases transepicardial dispersion of repolarisation in hypertensive patients: a differential effect on QTpeak and QTend dispersion.

Background: Ventricular arrhythmias in left ventricular hypertrophy (LVH) are related to regional electrical heterogeneity. The significance of noninvasive electrocardiographic indices of electrical heterogeneity in LVH has not been established. The aim of the study was to investigate changes in the Tpeak-Tend interval (an index of transmural dispersion of repolarisation) in addition to other traditional electrocardiographic indices of electrical dispersion in patients with hypertensive LVH.

Effects of glucose-insulin-potassium infusion on QT dispersion in patients with acute myocardial infarction.

Background: Increased QT dispersion during acute myocardial infarction (AMI) has been associated with the occurrence of ventricular arrhythmias. Also, serum potassium levels have been shown to be relevant to the arrhythmic risk in this group of patients. The aim of the present study was to assess changes in QT dispersion during infusion of glucose-insulin-potassium (GIK) during AMI.