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IABP therapy helps the heart by increasing oxygen to the heart while decreasing its workload.

Angiogram: A series of x-rays of the blood vessels in the heart taken in rapid sequence following the injection of a contrast substance into the blood stream.

Aorta: The large arterial trunk that carries blood from the heart to be distributed by branch arteries through the body.

Arteries: The thick, muscular tubes that carry blood away from the heart.

Blood clots: The conversion of blood into a semisolid gel.

Blood thinner: Medication used to prevent blood clots or keep the blood in a liquid form. (for example, Coumadin®)

Blood vessels: An extensive network of flexible tubes that carries blood to and from the heart and throughout the body. The blood vessels are the transportation system of the body. The blood vessels include arteries, capillaries, and veins.

Coronary Arteries: Either of two arteries that originate in the aorta and supply the heart muscle with blood.

Coronary Artery Bypass Grafting (CABG – pronounced "cabbage"): A heart surgery procedure that treats the symptoms of coronary artery disease. CABG surgery reroutes (or 'bypasses') the blood flow around the blockages in the coronary arteries, restoring blood flow to the heart muscle itself.

Coronary Stent: A tube placed in the coronary arteries that supply the heart, to keep the arteries open in the treatment of coronary heart disease. It is used in a procedure called percutaneous coronary intervention (PCI).

Coronary Heart Disease (CHD): A disease in which plaque deposits containing cholesterol atherosclerosis and fat globules are deposited within the arteries.

Ejection Fraction (EF): A measure of how efficient the heart is able to eject blood from the ventricles to the rest of the body. Ejection fraction is expressed in percentages.

Intravenous lines: A drug, nutrient solution, or other substance administered into a vein.

Ischemic: A decrease in the blood and oxygen supply to an organ or tissue in the body.

Myocardial infarction: Damage or death of myocardial tissue (heart muscle) as a result of decreased blood flow.

Myocardial revascularization: Restoring blood flow to the myocardium (heart muscle).

Perfusion scan: A test to determine blood flow through the vessels to the heart. Pulmonary artery Receives blood from the right ventricle and passes it to the lungs where it is enriched with oxygen.

Right atrium: Receives oxygen depleted blood from the body and passes it on to the right ventricle.

Right ventricle: Receives blood from the right atrium and pumps it through the pulmonary artery into the lungs where it is enriched with oxygen.

Valves: Flap-like structures that maintain blood flow in one direction only, through the heart and pump.