Bovine pericardium is used for heart valve leaflet replacement where the strength and thinness are critical properties. Pericardium from neonatal animals (4-7 days old) is advantageously thinner and is considered as an alternative to that from adult animals. Here, the structures of adult and neonatal bovine pericardium tissues fixed with glutaraldehyde are characterized by synchrotron-based sma...

congenital defects of the pericardium are considered rare. until 1979 , the reported cases were only about 200.1 total absence of the left pericardium is the most common defect2 and less common is a partial defect of the left pericardium. other types, i.e. isolated right-sided defects, total pericardial absence and diaphragmatic pericardial defects are very rare.3 before the last decade, the di...

This may be distinguished from intrapericardial bands if the parietal pericardium is thin and fixed, because most of the pericardial bands in our patients had an undulating motion during the cardiac cycle. Awareness of the pericardial abnormalities described here may allow correlation with specific pathologic findings by investigators in the future.9 For the present, these findings may improve ...

Tunicates, small invertebrates within the phylum Chordata, possess a robust tubular heart which pumps blood through their open circulatory systems without the use of valves. This heart consists of two major components: the tubular myocardium, a flexible layer of myocardial cells that actively contracts to drive fluid down the length of the tube; and the pericardium, a stiff, outer layer of cell...

discussion hydatid cyst in pericardium represents only 0.5-2% of cases of systemic echinoccocal infection. isolated pericardial cyst is very rare in endemic region and may present mimicking acute coronary syndrome. cardiac hydatid cysts should always be considered in presence of eosinophilia as present like acute coronary syndrome in endemic area. introduction hydatid cysts are most commonly fo...

pericardial hemangioma is very rare and their coincidence with other visceral hemamgiomas is exceptional. we are reporting a 72-year-old man with an incidentally discovered pericardial hemangioma during coronary artery bypass graft (cabg) and mitral valve replacement surgery and a prior history of multiple hepatic cavernous hemangiomas. this case has been reported due to its extreme rarity. to ...

The pericardium is a double walled sac, surrounding the heart and consists of a dense network of collagen fibers. During the contraction, the epicardial surface glides on the inner surface of the pericardium. The pericardial fluid between these two surfaces allows almost frictionless motion. In this work an electromechanical simulation framework was used to simulate the motion of the contractin...

The pericardium is a watertight sac that envelops the heart and the great vessels. It is affected by various disease states, and its tough and inelastic nature means that acute accumulation of small amounts of fluid, or fibrosis and scarring processes affecting it may impede filling of cardiac chambers and reduce cardiac output. This is the main impact that the pericardium has in pathological s...