AB
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Aerobic ExerciseActivity which requires continuous rhythmic muscle contraction of the legs and/or arms.
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AneurysmBulging of the wall of a vein artery or heart due to injuyrty or birth defect
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Angina Pectoris
A condition in which the heart muscle itself doesn’t receive a sufficient blood supply resulting in pain in the chest and often in the left arm and shoulder.
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AngiogramTest done by injecting contrast dye into a body organ to observe the heart or systemic circulation.
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AnticoagulantMedicine which delays clotting of the blood.
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Aorta
Largest artery in the body. It carries blood from the heart’s left ventricle and distributes it throughout the body.
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ArrhythmiaIrregular heart rhythm.
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ArteriosclerosisCondition in which the walls of the arteries thicken and lose their elasticity t
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ArteryBlood vessels which carry blood to various parts of the body. Arteries carry oxygenated blood.
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AtherosclerosisHardening of the arteries caused by a buildup of lipids and other substances in the blood vessels.
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AtriumOne of the two upper chambers of the heart.
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Automatic Implantable
Implanted device used to treat the Cardioverter life-threatening rhythms of ventricularDefibrillator (AICD) tachycardia or ventricular fibrillation.
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Blood PressureForce that flowing blood exerts against artery walls.
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BradycardiaAbnormally slow heart rate. Generally any rate under 60 beats per minute.
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Cardiac ArrestOccurs when the heart stops beating and the circulation of blood ceases.
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Cardiac Catheterization
Test done by putting a long narrow flexible tube into a blood vessel and guiding it into the heart to measure the mechanics of blood flow and to determine the position and size of structural defects.
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CardiomyopathyDisease of the heart muscle that reduces the ability of the heart to pump enough blood.
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Cardiopulmonary Resuscitation (CPR)
Emergency measure used by one or two people to try to revive a person whose heart and breathing have stopped.
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CardiovascularPertaining to the heart and blood and blood vessels.
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Cardioversion
Use of low voltage electric shock to stop an abnormally fast heart rhythm through paddles placed on the chest surface.
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CatheterThin flexible tube which can be guided into a body organ.
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ClaudicationCramping of the muscles (typically the calf muscles) with exercise produced by inadequate blood flow.
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Congestive Heart Failure
Condition in which the heart is unable to pump enough blood. Loss of this pumping power can lead to weakened circulation and fluid collection in body organs and tissues.
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Coronary ArteriesArteries arising from the base of the aorta which carry blood to the heart muscle.
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Coronary Artery Bypass Graft (CABG)
Surgery done to bypass narrowed or obstructed areas to improve blood flow.
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Coronary Heart Disease
Condition caused by narrowing of the coronary arteries resulting in decreased blood supply to the heart (ischemia).
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Coronary Occlusion
Obstruction in a coronary artery which interrupts flow of blood to the heart muscle. Also called a heart attack.
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Defibrillation
Use of high voltage electric shock to stop an abnormally fast heart rhythm through paddles placed on the chest surface (external) or around the heart (internal).
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Diabetes Mellitus
Disease characterized by high levels of glucose in the blood caused by a failure of the pancreas to produce enough insulin or by ineffective use of insulin in the body.
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Diuretics
Medicines which increase the flow of urine. Often used to treat conditions involving excess body fluid such as hypertension and congestive heart failure.
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DyspneaShortness of breath.
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Echocardiogram
Test in which pulses of sound are sent into the body and the echoes returning from the surfaces of the heart produce images that are recorded.
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EdemaSwelling that occurs when the body tissue contains more fluid than normal.
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ElectrocardiogramGraphic record of the electrical activity of the heart.
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Electrophysiology Study (EP study)
Test done to evaluate the heart’s electrical conduction system by inserting small catheters into the heart and reproducing symptoms and rhythm disturbances in a controlled setting.
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EmbolismBlocking of a blood vessel by a blood clot or other substance carried in the blood stream.
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Heart AttackSee myocardial infarction.
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Heart BlockCondition which results in a block or a slowing of the electrical impulses which travel through the heart.
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Heart RateNumber of times the heart beats in one minute.
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HemorrhageProfuse loss of blood or bleeding.
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HypercholesterolemiaExcess of cholesterol in the blood.
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HyperlipidemiaExcess of fats or lipids in the blood.
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HypertensionHigh blood pressure.
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HypotensionLow blood pressure.
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InfarctArea of tissue which is damaged or dies because of a blocked blood supply.
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Irregular rhythmHeartbeat that is unpredictable and without pattern.
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IschemiaTemporary deficiency of blood and oxygen in a portion of the body
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IsotonicMuscular work which produces motion of a body part. Also referred to as dynamic work.
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LipidTerm for fat or fat-like substance found in the blood
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METs (metabolic equivalent)
Units of measurement of the energy required to perform a physical activity. One MET is the energy used by your body while sitting quietly in a comfortable chair.
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Myocardial InfarctionInadequate blood supply to the heart
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Pacemaker
Small mass of specialized cells in the right atrium of the heart which initiates the electrical impulses that produce contractions of the heart. An implanted pacemaker is an electrical device which can control the beating of the heart
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PalpitationsSensation of fluttering of the heart.
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PericardiumClosed sac around the heart.
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PhlebitisInflammation of any vein
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PlaqueDeposit of fat or other substances in the lining of the arterial walls.
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PTCA
Abbreviation for percutaneous transluminal coronary angioplasty. Procedure of stretching open a coronary artery with a balloon catheter to improve blood flow to the heart muscle.
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PulmonaryReferring to the lungs.
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Pulmonary ArteryArtery that transports blood needing oxygen from the heart to the lungs.
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Risk Factor
Characteristic that has been shown to increase one’s chances for developing a disease or making a disease worse.
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Saphenous Vein
Large vein in the leg which can be grafted onto the heart in coronary bypass surgery to provide adequate coronary circulation.
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Sinus RhythmNormal heart rhythm.
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Stent
A stainless steel device that helps hold any artery open. It is placed by a balloon catheter inflated in the artery.
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StressPhysical
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Stress TestA stress test is an electrocardiogram recorded before
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TachycardiaFast heart rate. Generally any rate above 100 beats per minute.
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ThrombosisFormation of a blood clot (thrombus) inside a cavity of the heart or blood vessel.
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VascularPertaining to blood vessels.
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Vein
One of the blood vessels which returns blood from various parts of the body to the heart. Usually carries deoxygenated blood.
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VentricleOne of the two main pumping chambers of the heart. The left ventricle pumps blood to the body
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