OBJECTIVE Thrombin, the final coagulation product of the coagulation cascade, has been demonstrated to have many physiological effects, including pro-fibrotic actions via protease-activated receptor (PAR)-1. Recent investigations have demonstrated that activation of the cardiac local coagulation system was associated with atrial fibrillation. However, the distribution of thrombin in the heart, ...

A 31-year-old woman, whose chief complaint was back pain, was found to have an echocardiographic abnormality suggestive of a left atrial myxoma. Angiography clearly showed a large radiolucent mass protruding from the left atrium into the left ventricle during diastole. X-rays of the sacrum disclosed the presence of a malignant tumour. Biopsy specimens taken from the tumour in the sacral plexus ...

Tumours of the heart are not common. Benjamin (1939) reports the incidence of primary tumours as 0 03 per cent of 40,000 autopsies. Nearly 50 per cent of these primary tumours are myxomata or myxomatous polyps. Yater (1931) (77 cases), Mahaim (1945) (82 cases) and Pritchard (1951) (125 cases) have collected and reported cases and the number reported is probably still less than 250. Approximatel...

INTRODUCTION AND OBJECTIVES The left atrium is clinically relevant in patients with mitral valve stenosis. The objective of this study was to analyze the effects of percutaneous balloon valvuloplasty on left atrium volumes and the left atrium emptying fraction in symptomatic mitral valve stenosis patients using 2-dimensional and real-time 3 -dimensional transthoracic echocardiography. METHODS...

Automatic segmentation of the heart's left atrium offers great benefits for planning and outcome evaluation of atrial ablation procedures. However, the high anatomical variability of the left atrium presents significant challenges for atlas-guided segmentation. In this paper, we demonstrate an automatic method for left atrium segmentation using weighted voting label fusion and a variant of the ...

We compared effects of the antiarrhythmic drug bepridil on the electrophysiological parameters in the isolated pulmonary vein preparation from guinea pigs with those in the left atrium. Three pairs of bipolar electrodes were attached to the left atrium, pulmonary vein and junctional region of left atrium and pulmonary vein to measure intra-atrial and intra-pulmonary vein conduction velocity and...

ENWEndNote BIBJabRef, Mendeley RISPapers, Reference Manager, RefWorks, Zotero AMA Killen SA. Prenatal diagnosis of anomalous drainage the right superior vena cava to left atrium. Cardiology. 2022;(1). doi:10.5114/pcard.2022.127233. APA Killen, S. A. (2022). Cardiology, (1). https://doi.org/10.5114/pcard.2022.127233 Chicago Stacy 2022. "Prenatal atrium". Cardiology Harvard MLA Stacy. atrium." no...

myocardial infarction using Doppler echocardiography provides important prognostic information.1,2 Evaluating left atrium volume is a good way to estimate prognosis in patients with acute myocardial infarction as it indicates time and severity of diastolic dysfunction and longer term results of acute myocardial infarction.3,4 The present study evaluated the effect of left atrium volume on patie...

A 67-year-old woman had progressive dyspnea, a loud murmur of mitral regurgitation, and a separate, continuous cardiac murmur suggesting shunt. Electrocardiographygated computed tomography demonstrated a 7-cm aneurysm of the left main coronary artery with possible connection to the right atrium (Figure, A), along with a thin tissue boundary between the aneurysm (Figure, B) and left atrium, rais...