The following sections define commonly used medical terms.
Cardiology This means relating to the heart and blood vessels.
Arrhythmia This is abnormal electrical activity in the heart producing abnormal beats (atrial fibrillation is a common example).
Congestive heart failure This is an abnormal pumping function of the heart leading to too much fluid (congestion) on the side of the heart before the pump or in the lungs.
Coronary artery disease This is an atherosclerotic plaque-based narrowing of the coronary arteries that provide essential oxygen to the heart. A heart attack (myocardial infarction) occurs if one of the three main arteries or their branches becomes suddenly ...