Write a note on various heart diseases.

Some heart diseases are as follows:

i. Coronary Artery Disease (CAD): It is often referred to as atherosclerosis. It affects the vessels that supply blood to the heart muscle. It is caused by deposits of calcium, fat, cholesterol and fibrous tissues, which makes the lumen of arteries narrower.
ii. Angina: Also known as ‘angina pectoris’. It is the acute chest pain that appears when the oxygen reaching the heart muscle is not enough. It may occur in men and women of any age but it is more common among the middle-aged and elderly. It occurs due to conditions that affect the blood flow.
iii. Heart Failure: It is the state when heart does not pump blood effectively enough to meet the needs of the body. It is sometimes
called congestive heart failure because congestion of the lungs is one of
the main symptoms of this disease.
iv. Cardiac arrest - It is when the heart stops beating
v. Heart attack - It is when the heart muscle is suddenly damaged by an inadequate blood supply.
vi. High Blood pressure - It is also called as hypertension and occures when the blood pressure remains 140/90 or higher 
vii. Coronary thrombosis : It is the blockage of coronary artery due to the presence of a small clot or thrombus. This also leads to insufficient or no supply of blood to the heart muscles.