what heart disease

Rejekine. Heart disease is a general term that refers to a variety of acute and chronic medical condition that affects one or more components of the heart. The heart is an organ, muscle size of a fist, located on the left side of the chest cavity. The heart is the organ pumping blood continuously, which can pump 100,000 times a day. Moving blood carries oxygen and nutrients throughout the body and transports carbon dioxide and other wastes into the lungs, kidneys, and liver for excretion in the process. Heart duty to ensure its own supply of oxygen through a series of coronary arteries and veins. The heart is also an endocrine organ that produces hormones atrial natriuretic hormone (ANP) and B-type natriuretic peptide (BNP), which coordinates the function of the heart with blood vessels and kidneys.

Heart disease is a disease associated with cardiovascular system, a system that regulates heart organ and its blood vessels, examples such as heart attack, coronary heart disease, high blood pressure, stroke, angina (chest pain) and rheumatic heart disease. Heart disease is usually sudden attack due to clogged arteries, which hamper the delivery of oxygen and nutrients to the heart. Stroke is caused by lack of blood flow to the brain, or sometimes cause bleeding in the brain.


Coronary heart disease

Heart disease affects many people the most is coronary heart disease. In coronary heart disease, coronary arteries become narrower (or in medical terms is known as atherosclerosis) and sometimes thoroughly clogged. In this situation causes the blood can not be routed properly to the heart muscles. Initially, the patient may still be able to breathe normally and blood flow to the heart muscle is still insufficient. However, in a condition as when he was doing heavier activities (exercising, being angry, etc.), the narrowed coronary arteries can not supply enough blood to the heart muscles. In fact, at that time, the heart needs more blood to the body gets enough energy and oxygen to perform the activity. As a result the people with heart disease can be collapsed and was unconscious, and may even die suddenly.