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An abnormally slow heart rate

Cardiac arrest

The cessation of heart activity

Cardiac catheterization

Insertion of a narrow flexible tube, called a catheter, through a blood vessel leading into the heart

Cardiac or coronary angiography

A diagnostic procedure that includes x-ray photography, MRI, or CAT scan images of the heart after injection of a contrast medium; a form of angiography

Cardiac pacemaker

A battery-powered device that is implanted under the skin and wired to the SA node in the heart to produce timed electric pulses that replace the function of the SA node

Cardiac tamponade

Acute compression of the heart due to the accumulation of fluid within the pericardial cavity

Cardiac ultrasonography

Another term for echocardiography, an ultrasound procedure that directs sound waves through the heart to evaluate heart function; recorded data is typically called an echocardiogram


Heart pain; more frequently called cardiodynia


Heart pain; less frequently called cardialgia


A symptom or sign that originates from a condition of the heart


An enlarged heart; occurs when the heart must work harder than normal to meet the oxygen demands of body cells


The general term for a disease of the myocardium of the heart


A sign in which the heart has become paralyzed

Cardiopulmonary resuscitation

Artificial respiration that is used to restore breathing by applying a combination of chest compression and artificial ventilation at intervals


Inflammation the valves of the heart that is usually diagnosed from the presence of a heart murmur which is a gurgling sound detected during auscultation

Coarctation of the aorta

A congenital defect characterized by aortic stenosis that is present at birth; it causes reduced systemic circulation of blood and accumulation of fluid in the lungs

Congestive heart failure (CHF)

A chronic form of heart disease characterized by the failure of the left ventricle to pump enough blood to supply systemic tissues and lungs

Cor pulmonale

The chronic enlargement of the right ventricle resulting from congestion of the pulmonary circulation

Coronary arterial bypass graft (CABG)

A surgical procedure that involves removal of a blood vessel from another part of the body and inserting it into the coronary circulation

Coronary artery disease

A disease that afflicts the coronary arteries supplying the heart

Coronary occlusion

A blockage within a coronary artery, resulting in a reduced blood flow to an area of the heart wall

Coronary stent

An artificial, usually plastic, scaffold that is used to anchor a surgical implant or graft


A blue tinge seen in the skin and mucous membranes caused by oxygen deficiency in tissues


An electric charge applied to the chest wall to stop the heart conduction system momentarily, then re-start it with a more normal heart rhythm

Doppler sonography

An ultrasound procedure that evaluates blood flow to determine the cause of a localized reduction in circulation

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