|
due to athero
天波轮 发表于 2012/7/13 16:34:00 |
Cardiovascular diseases are those affecting the heart and/or associated blood vessels. Widely known cardiovascular conditions include coronary heart disease, heart failure, rheumatic heart disease, stroke, and peripheral vascular disease. Except for rheumatic heart disease, the diseases are caused by a damaged blood supply to the heart, brain or limbs.The World Health Organization (WHO) has classified diseases of the circulatory system in the International Classification of Diseases (ICD), a compilation of all known conditions according to the system of the body that is affected. In the ICD, diseases of the circulatory system are categorised according to whether they are blood vessel disorders, hypertensive diseases, heart disorders, blood/brain disorders, or rheumatic disorders.
Cardiovascular diseases are often caused by atherosclerosis, a form of arteriosclerosis (hardening of the arteries) affecting large and medium-sized arteries. Cardiovascular disease (CVD) refers to a variety of conditions affecting the circulatory system including hypertension, coronary heart disease, and stroke. The circulatory system is a group of organs that transport blood and the substances it carries to and from all parts of the body. The circulatory system can be considered as composed of two parts: the systemic circulation, which serves the body as a whole except for the lungs, and the pulmonary circulation, which carries the blood to and from the lungs. The organs of circulatory system consist of vessels that carry the blood and a muscular pump, the heart, that drives the blood. The parts of the circulatory system include the heart, along with all the arteries, veins, and capillaries. The organs of the lymphatic system are also considered to be part of the circulatory system. Nutrients, oxygen, and other vital substances are carried throughout the body by the blood, which is pumped by rhythmic contractions of the heart. Blood is pumped from the heart to the arteries, which branch into smaller and smaller vessels as they move away from the heart. The blood passes oxygen and nutrients to the cells and picks up waste in the capillaries, then returns to the heart via a system of veins.
Common heart disease and cardiovascular disorders
Coronary artery disease - Coronary artery disease is a type of heart disease. The coronary arteries are blood vessels that carry blood and oxygen to the heart muscle. When these arteries become clogged with fatty deposits called plaque, it is called coronary artery disease (CAD). Coronary artery disease is sometimes called coronary heart disease (CHD). Clogged arteries can keep the heart from getting enough blood and oxygen and can cause chest pain (angina). If a blood clot forms, it can suddenly cut off blood flow in the artery and cause a heart attack.
Heart attack (myocardial infarction) - A heart attack (also known as a myocardial infarction) is the death of heart muscle from the sudden blockage of a coronary artery by a blood clot. Coronary arteries are blood vessels that supply the heart muscle with blood and oxygen. Blockage of a coronary artery deprives the heart muscle of blood and oxygen, causing injury to the heart muscle. Heart attack is caused by sudden loss of blood and oxygen to heart. The most common condition that predisposes a person to heart attack is coronary heart disease, or coronary artery disease, due to atherosclerosis, or fatty build up of plaque on the inner lining of coronary arteries.
<p><a href="http://www.airjordansforsale.org/">jordans for sale online</a></p>
Atherosclerosis - Atherosclerosis is a type of arteriosclerosis caused by a build-up of plaque in the inner lining of an artery. (Arteriosclerosis is a general term for thickening or hardening of the arteries.) Plaque is made up of deposits of fatty substances, cholesterol, cellular waste products, calcium, and fibrin, and can develop in medium or large arteries. The artery wall becomes thickened and looses its elasticity. Atherosclerosis typically begins in later childhood, is usually found in most major arteries, yet is asymptomatic and not detected by most diagnostic methods during life.
<p><a href="http://www.airjordansforsale.org/">jordans for sale online</a></p>
Cardiomyopathy - Cardiomyopathy is an alteration in the function of the heart muscle. It can occur for several reasons in cats and it can take several forms. When the muscle is sufficiently affected that it can not function properly, heart failure occurs.
Cardiomyopathy is the deterioration of the cardiac muscle of the heart wall. Cardiomyopathies can generally be categorized into two groups: ischemic cardiomyopathy and nonischemic cardiomyopathy. Cardiomyopathy can lead to heart failure as the pumping efficiency of the heart is diminished. People with cardiomyopathy are often at risk of arrhythmia and/or sudden cardiac death. |
|
|
