The heart is a hollow organ that sits in the mediastinum cavity, the heart itself is surrounded by a sack known as the pericardium. The most inner layer is the epicardium the outer layer is the parietal pericardium and in between these two layers is pericardial fluid. In a normal heart a person usually contain 30-50mL of pericardial fluid. The tough layer that surrounds the parietal layer is the fibrous pericardium. The fibrous tissue sack provides physical protection to the heart by not allowing it to over expand. In Pericardial Effusion, the patient has an abnormal accumulation of fluid within the pericardial cavity. This reduces the ability of the heart to perform its every day function. Most of the time the cause of pericardial effusion
