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Cardiac refers to the heart. The term can be used to describe anything related to the heart or affecting the heart. For example, cardiac arrest is a medical emergency in which the heart stops beating and can be caused by many different factors, such as a heart attack or an electrical disturbance in the heart. Cardiac surgery is a type of surgery that is performed on the heart, such as coronary artery bypass surgery or heart valve repair surgery. Cardiac rehabilitation is a program of exercises and lifestyle changes that is designed to help people recover from heart attacks, heart surgery, or other heart conditions. Cardiology is the branch of medicine that deals with the diagnosis and treatment of heart conditions.
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