Pressure on heart's sac due to build-up of fluid.Encyclopedia Entry for Cardiac Tamponade :Cardiac tamponade. In this condition, blood or fluid collects in the sac surrounding the heart. This prevents the heart ventricles from expanding fully. The excess pressure from the fluid prevents the heart from working properly. As a result, the body does not get enough blood. Cardiac tamponade can occur due to: Dissecting aortic aneurysm (thoracic) End-stage lung cancer Heart attack ( acute MI ) Heart surgery Pericarditis caused by bacterial or viral infections Wounds to the heart Other possible causes include: Heart tumors Underactive thyroid gland Kidney failure Leukemia Placement of central lines Radiation therapy to the chest Recent invasive heart procedures Systemic lupus erythematosus Dermatomyositis Heart failure Cardiac tamponade due to disease occurs in about 2 out of 10,000 people.Symptoms may include: Anxiety , restlessness Sharp chest pain that is felt in the neck, shoulder, back, or abdomen Chest pain that gets worse with deep breathing or coughing Problems breathing Discomfort, sometimes relieved by sitting upright or leaning forward Fainting , lightheadedness Pale, gray, or blue skin Palpitations Rapid breathing Swelling of the legs or abdomen Jaundice Other symptoms that may occur with this disorder: Dizziness Drowsiness Weak or absent pulse.Echocardiogram is the test of choice to help make the diagnosis. This test may be done at the bedside in emergency cases. A physical exam may show: Blood pressure that falls when breathing deeply Rapid breathing Heart rate over 100 (normal is 60 to 100 beats per minute) Heart sounds are only faintly heard through a stethoscope Neck veins that may be bulging (distended) but the blood pressure is low Weak or absent peripheral pulses Other tests may include: Chest CT or MRI of chest Chest x-ray Coronary angiography ECG Right heart catheterization.Cardiac tamponade is an emergency condition that needs to be treated in the hospital. The fluid around the heart must be drained as quickly as possible. A procedure that uses a needle to remove fluid from the tissue that surrounds the heart will be done. A surgical procedure to cut and remove part of the covering of the heart (pericardium) may also be done. This is known as surgical pericardiectomy or pericardial window. Fluids are given to keep blood pressure normal until the fluid can be drained from around the heart. Medicines that increase blood pressure may also help keep the person alive until the fluid is drained. Oxygen may be given to help reduce the workload on the heart by decreasing tissue demands for blood flow. The cause of tamponade must be found and treated.Death due to cardiac tamponade can occur quickly if the fluid or blood is not removed promptly from the pericardium. The outcome is often good if the condition is treated promptly. However, tamponade may come back.Complications may include: Heart failure Pulmonary edema Bleeding Shock Death.Go to the emergency room or call the local emergency number (such as 911) if symptoms develop. Cardiac tamponade is an emergency condition that needs immediate medical attention.Many cases can't be prevented. Knowing your personal risk factors may help you get early diagnosis and treatment.Tamponade; Pericardial tamponade; Pericarditis - tamponade.Heart, front view Heart, front view Pericardium Pericardium Cardiac tamponade Cardiac tamponade.LeWinter MM, Imazio M. Pericardial diseases.