A68-year-old man presented with an incessant supraventricular tachycardia 3 months after heart transplantation. A dual-chamber pacemaker had been implanted immediately after surgery for bradyarrhythmias. Electrophysiological study was performed with a multipolar halo catheter (20 electrode pairs) in the right atrium and bior quadripolar catheters in a high lateral, His, and coronary sinus ostiu...

This study used an isolated right atrial preparation, cross-perfused with arterial blood from a support dog. We investigated the effects of dibutyryl cyclic AMP (DBcAMP) on heart rate and arterial blood pressure of the support dog and on the sinus rate and atrial contractile force of the isolated perfused atrium. DBcAMP was injected into the external jugular vein of the support dog or into the ...

Giant left atrium is a rare condition, with a reported incidence of 0.3%, and following mainly rheumatic mitral valve disease. Although rheumatic heart disease represents the main cause of giant left atrium, other etiologies have been reported. Giant left atrium has significant hemodynamic effects and requires specific management. In this review, we present two cases, discuss the different defi...

To study synthesis, storage, and secretion of brain natriuretic peptide (BNP) in the heart, we have measured BNP mRNA and BNP concentrations in the hearts of Wistar-Kyoto rats and also have investigated its secretion from the isolated perfused heart. The atrium expressed the BNP gene at a high level, and a considerable amount of BNP mRNA also was present in the ventricle, which corresponded to ...

To study synthesis, storage, and secretion of brain natriuretic peptide (BNP) in the heart, we have measured BNP mRNA and BNP concentrations in the hearts of Wistar-Kyoto rats and also have investigated its secretion from the isolated perfused heart. The atrium expressed the BNP gene at a high level, and a considerable amount of BNP mRNA also was present in the ventricle, which corresponded to ...

Enlargement of right atrium is usually secondary to pulmonary hypertension due to valvular heart diseases or obstructive pulmonary disorders, atrial septal defect, tricuspid atresia or stenosis, pulmonary stenosis, primary pulmonary hypertension, Ebstein's anomaly. Congenital enlargement of right atrium is rare and it commonly presents in children. Our patient presented with congenital giant ri...

Case description. A 41-year-old male patient F. was admitted to the Department ofSurgical Treatment of Ac-quired Heart Diseases National Amosov Institute Cardiovascular Surgery Academy Medical Sciences Ukraine with a diagnosis: Dilated cardiomyopathy. Mitral-tricuspid insufϐiciency. Left atrial myxoma. atriomegaly. Pulmonary hypertension. The operated heart failure symptoms NYHA functional clas...

Studies of expressed genes in human heart provide insight into both physiological and pathophysiological mechanisms. This is of importance for extended understanding of cardiac function as well as development of new therapeutic drugs. Heart tissue for gene expression studies is generally hard to obtain, particularly from the ventricles. Since different parts of the heart have different function...

Objective: The purpose of present study was to obtain a complete understanding about anatomical features and echocardiography of Beluga (Huso huso) species in order to provide standard approaches for performing echocardiography on this sturgeon species.Design - Experimental studyAnimals -10 immature (2.5 years old) Beluga (Huso huso)Procedures- To perform echocardiography, Son...