pericardial membrane

pericardial membrane

the membrane surrounding the heart.
References in periodicals archive ?
On the next day, Echocardiography revealed mild Mitral regurgitation (MR), mild pericardial effusion with thickening of the pericardial membrane that suggested pericarditis.
Al-Majnooni said, "The accumulated fluid resulted from a lack of thyroid hormone and were found between the pericardial membrane surrounding the heart and the layer adjacent to the heart muscle." He confirmed that it is normal to find about 50 ml of fluid between the two membranes to reduce their friction, but if the amount of fluid exceeds this level, there is a negative effect on the heart muscle.
(4) This fluid helps reduce friction between the pericardial membranes as the heart beats.