The same as removal of a part of biological tissue, usually by surgery. Ablation therapy using radio frequency waves on the heart is used to cure a variety of cardiac arrhythmia such as supraventricular tachycardia, Wolff-Parkinson-White syndrome (WPW), ventricular tachycardia, and more recently as management of atrial fibrillation.


Surgical joining of two ducts, vessels, or bowel segments to allow flow from one to another


Localized abnormal dilation of a vessel, usually an artery


Chest pain


Procedure that alters a vessel through surgery or dilation of the vessel using a balloon catheter


A substance or drug that lowers blood pressure


Inability of the heart to maintain a steady rhythm, possibly including a paid or slow beat or "skipping" a beat


Removal of material from a vessel using a specially designed catheter fitted with a cutting or grinding device


Microscopic vessels that join the arterial system with the venous system

Cardiac catheterization

Passage of a catheter into the heart through a vein or artery to provide a comprehensive evaluation of the heart

Cardiac Surgery

Cardiac surgery is a surgery on the heart and/or great vessels performed by a cardiac surgeon. Frequently, it is done to treat complications of ischemic heart disease (for example, coronary artery bypass grafting), correct congenital heart disease, or treat valvular heart disease created by various causes including endocarditis. It also includes heart transplantation.


Any disease of heart muscle that diminishes cardiac function

Congestive heart failure

The inability of the heart to pump a sufficient amount of blood throughout the body, or requiring elevated filling pressures in order to pump effectively

Coronary Stent

A coronary stent is a tube placed in the coronary arteries that supply the heart, to keep the arteries open in the treatment of coronary heart disease.

Coronary Bypass Surgery

Coronary artery bypass surgery is a heart operation. It uses blood vessels to go around or "bypass" clogged coronary (heart) arteries so blood can flow through the new vessels to the heart muscle the way it should.


Manage edema associated with heart failure and treat hypertension


Noninvasive diagnostic method that uses ultrasound to visualize internal cardiac structures and produce images of the heart


Graphic line recording that shows the spread of electrical excitation to different parts of the heart using small metal electrodes applied to the chest, arms, and legs

Embolus, emboli

Mass of undissolved matter circulating in blood or lymphatic channels until it becomes lodged in a vessel


Quivering or spontaneous muscle contractions, especially of the heart, causing ineffectual contractions


Arrest of bleeding or circulation


A drug given directly into a vein which thins the blood when there is a danger of clotting (an anticoagulant)

Holter Monitor

a portable device for continuously monitoring various electrical activity of the central nervous system for at least 24 hours (modern Holters allow up to 11 days of monitoring)


Excessive amounts of lipids (cholesterol, phospholipids, and triglycerides) in the blood


Common disorder characterized by elevated blood pressure persistently exceeding 140 mm Hg systolic or 90 mm Hg diastolic


Area of tissue that undergoes necrosis following cessation of blood supply


Deficiency of oxygen in a tissue due to obstruction of a blood vessel


The part of the thoracic cavity between the lungs that contains the heart and aorta and esophagus and trachea and thymus

Mitral Valve Prolapse

Common and occasionally serious condition in which the leaflets of the mitral valve prolapse into the left atrium during systole causing a characteristic murmur heard on auscultation

Patent ductus arteriosus

Failure of the ductus arteriosus to close after birth, allowing blood to flow from the aorta into the pulmonary (lung) artery


The membranous sac filled with serous fluid that encloses the heart and the roots of the aorta and other large blood vessels


Incision or puncture of a vein to remove blood or introduce fluids or medication


Destruction of blood clot using anticlotting agents called "clot-busters" such as tissue plasminogen activator


Blood clot that obstructs a vessel


Puncture of a vein by a needle attached to a syringe or catheter to withdraw a specimen of blood, perform a phlebotomy, instill a medication, start an intravenous infusion, or inject a radiopaque substance for radiological examination