Heart disease is the biggest cause of adult death in the western world.
Cardiology is the branch of medicine that deals with the heart, particularly its structure and function, and the diagnosis and treatment of heart disease.
The following pages explain how the heart works, diseases and symptoms, heart rhythm abnormalities, and the use of the electrocardiogram.
This section contains a review of symptoms that may indicate the presence of heart disease.
This section describes the various tests that doctors and cardiologists use to identify and monitor heart disease.