build up of fluid within the pericardial sac (the sac which lines the heart and large valves)

Abnormal accumulation of fluid in the pericardial sac.

Fluid collects in the pericardial sac - the outer covering of the heart. It may place pressure on the heart causing it to pump ineffectively. This fluid can be drawn off by using a needle or by taking diuretics.

Escaped fluid into the fibrous sac that surrounds the heart.

an abnormal collection of fluid in the pericardial sac surrounding the heart

Collection of fluid or blood in the sack (pericardium) that surrounds the heart. Causes include congestive heart failure, cancer, and autoimmune disease.

An accumulation of fluid in the pericardial sac (sac surrounding the heart).

accumulation of fluid between the pericardium and the heart

fluid collects in the pericardial sac - the outer covering of the heart - which can be drawn off using a needle, or drained using diuretics

A collection of fluid or blood in the pericardial space (inside the pericardial sac) around the heart

Escape of fluid in to the pericardium

fluid buildup in the heart's pericardium.

An abnormal collection of fluid inside the membrane that covers the heart.

Pericardial effusion ("fluid around the heart") is an abnormal accumulation of fluid in the pericardial cavity. Because of the limited amount of space in the pericardial cavity, fluid accumulation will lead to an increased intrapericardial pressure and this can negatively affect heart function. When there is a pericardial effusion with enough pressure to adversely affect heart function, this is called cardiac tamponade.