Increased Fluid Around the Heart May Cause Cardiac Tamponade

Pericardial effusion occurs when there is an abnormal amount of fluid around the heart.  The heart is normally surrounded by a thin membranous sac called the pericardium.  The space between the pericardium and the muscle that is the heart is referred to as the pericardial space.  Normal levels of pericardial fluid within the pericardial space are from 15 to 50 mL or about 1-3 tablespoons. An effusion, therefore, represents an abnormal accumulation of fluid in Continue Reading