Main Page | See live article | Alphabetical index Cardiology is the branch of medicine dealing with disorders of the heart and blood vessels. The human heart is a complex organ, consisting of two ventricles and two atria. Coronary arteries feed the heart the blood it needs to sustain itself. Important diseases of the heart: Acute myocardial infarction (heart attack) Angina Coronary heart disease Cardiac arrest Cardiac arrhythmias Cardiomyopathy Congenital heart defects Tetralogy of Fallot Endocarditis Heart failure Ischaemic heart disease Myocarditis Rheumatic heart disease Valvular heart disease Important symptoms: Heart murmur See also: Cardiology diagnostic tests and procedures. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.