Atrial fibrillation (AF) is the most common cardiac arrhythmia. Many studies have investigated the cause for the development of AF in the left ventricle dysfunction. Recently the hypothesis was proposed that atrial fibrillation is a protective physiological mechanism, based on the termination of atrial mechanical systole. This reduces the enddiastolic pressure in the left ventricle by excluding...

results of the 41 patients with dcm, echocardiography examination revealed 11 patients (27%) without mitral regurgitation and 12 (29%) with mild, 11 (27%) with moderate, and seven (17%) with severe mitral regurgitation. all of the morphological and functional parameters of left ventricle, atrium and mitral valve in dcm patients were greater than those in healthy subjects (all p < 0.05), except ...

IN CHRONIC CARDIAC DISEASE, the left ventricular diastolic pressure does not provide a reliable guide to the diastolic left ventricular volume,' and measurement of chamber volume, shape and wall thickness are necessary to identify changes in the myocardial stress-strain relation.' Under acute conditions, the stiffness of the left ventricular chamber progressively increases as passive diastolic ...

background: heart disease is the main cause of mortality and morbidity in patients with beta thalassemia, rendering its early diagnosis vital. we studied and compared echocardiographic findings in patients with beta thalassemia major, patients with beta thalassemia intermedia, and a control group. methods: eighty asymptomatic patients with thalassemia major and 22 asymptomatic cases with thalas...

Double outlet right ventricle, a rare congenital heart anomaly of either animals or man, was diagnosed in a three day old Brangus heifer. The clinical course was brief, consisting of terminal recumbency, dyspnea and cyanosis. Upon necropsy, the heart was enlarged as a result of marked dilatation of the right atrium and the right ventricle. The aorta arose from the right ventricle while the left...

Functional state of left ventricle was studied in 43 patients with dilated cardiomyopathy. All the patients showed pronouncedly reduced total ejection, stroke volume and cardiac index, increased final diastolic and final systolic volumes, decreased ejection rate indices. Analysis of regional contractility of left ventricle allowed to detect significant fall of ejection fraction in 96.3% of segm...