|
Who's Online |
|
We have 35 guests online |
|
|
|
|
Top Rated Sites - Conditions and Diseases > Heart and Vascular Directory - A list of the Top Rated Sites for the Heart and Vascular sub-category section. Top Rated Websites for Heart and Vascular.
heart Health Article 1 
-
Little-Known Fat Can Be a Heartbreaker (HealthDay)
HealthDay - FRIDAY, Oct. 10 (HealthDay News) -- If you#39;re worried about
reducing your risk of heart disease, you probably already know that you
should quit smoking, eat a healthful diet, exercise regularly, keep your
blood pressure in check, and make sure your cholesterol levels aren#39;t too
high.
(Hits: 462 | Votes: 0 | Visited: 0 | Added: 2005-05-16 15:39:09)
|
Ischaemic Heart Disease
-
Ischaemic heart disease
a href=http://pheeds.com/index.html?Pheeds Home/a | BRa href=http://pheeds.com/Ischaemic_heart_disease.html?More Ischaemic heart disease articles pheeds/a
nbsp; nbsp; nbsp; nbsp; nbsp; BRnbsp;BR
h1Ischaemic heart disease/h1p
Ischaemic heart disease is a A HREF=http://pheeds.com/info/guide/d/di/disease.html? title=Diseasedisease/A characterized by reduced blood supply to the A HREF=http://pheeds.com/info/guide/h/he/heart.html? title=Heartheart/A. It is the most common cause of death in most western countries.p
Ischaemia means a reduced blood supply. The coronary arteries supply blood to the heart muscle and no alternative blood supply exists, so a blockage in the A HREF=http://pheeds.com/info/guide/c/co/coronary_circulation.html? title=Coronary circulationcoronary arteries/A reduces the supply of blood to heart muscle.p
Most ischaemic heart disease is caused by A HREF=http://pheeds.com/info/guide/a/at/atherosclerosis.html? title=Atherosclerosisatherosclerosis/A.p
What is it?
ulli Initially there is narrowing of coronary arteries causing A HREF=http://pheeds.com/info/guide/a/an/angina.html? title=Anginaangina/A.
/lili The narrowing is mostly caused by fatty plaques lining the wall of the artery.
/lili Sometimes a fatty plaque will rupture leading to a A HREF=http://pheeds.com/info/guide/h/he/heart_attack.html? title=Heart attackheart attack/A. (Heart attacks caused by simple narrowing are relatively uncommon).
/lili A heart attack causes damage to heart muscle by cutti ...
(Hits: 359 | Votes: 0 | Visited: 0 | Added: 2005-05-22 09:20:53)
|
Coronary Heart Disease
-
Coronary heart disease
a href=http://pheeds.com/index.html?Pheeds Home/a | BRa href=http://pheeds.com/Coronary_heart_disease.html?More Coronary heart disease articles pheeds/a
nbsp; nbsp; nbsp; nbsp; nbsp; BRnbsp;BR
h1Coronary heart disease/h1Coronary heart disease (CHD), also called coronary artery disease and atherosclerotic heart disease, may be caused by inflammation of the lining of the arteries which allows A HREF=http://pheeds.com/info/guide/p/pl/plaque.html? title=Plaqueatheromatous plaquess/A (caused by the buildup of A HREF=http://pheeds.com/info/guide/c/ch/cholesterol.html? title=Cholesterolcholesterol/A in the vessel wall) to form, limiting blood flow to the heart muscle. p
p
Table of contents
A CLASS=internal HREF=#Pathophysiology1 Pathophysiology/ABR
A CLASS=internal HREF=#Angina2 Angina/ABR
A CLASS=internal HREF=#Prevention3 Prevention/ABR
P
A NAME=PathophysiologyH2Pathophysiology/H2p
Limitation of blood flow to the heart causes ischemia (cell starvation secondary to a lack of oxygen) of the myocardial cells. When myocardial cells die from lack of A HREF=http://pheeds.com/info/guide/o/ox/oxygen.html? title=Oxygenoxygen/A, this is called a A HREF=http://pheeds.com/info/guide/h/he/heart_attack.html? title=Heart attackmyocardial infarction/A (commonly called a A HREF=http://pheeds.com/info/guide/h/he/heart_attack.html? title=Heart attackheart attack/A), and leads to heart muscle damage and later scarring. Myocardial infarction can result from the sudden occlusion of a corona ...
(Hits: 574 | Votes: 0 | Visited: 0 | Added: 2005-05-22 09:31:52)
|
|
Atherosclerosis
Atherosclerosis is a disease characterized by the deposition of fatty substances called plaques in the walls of medium and large arteries. Depending on which arteries are affected, it can lead to leg pain, erectile dysfunction, cardiovascular disease and heart attack or stroke. It is the main cause of death in developed countries. The disease often starts in childhood and the arteries become clogged over many years, initially without symptoms.Mechanism of the disease High blood pressure, high cholesterol, smoking, diabetes, sedentary life style, hormone status and age are all risk factors for atherosclerosis. These factors conspire to cause tears to the lining of the medium and large arteries, which results in fatty deposits, inflammation, and ultimately narrowing of the afflicted arteries. High blood pressure provides the shear force to produce tears in the fragile endothelium, the lining of the arteries. Cholesterol migrates into these torn sections when concentrations of LDL, or low density lipoprotein are high. Smoking has a direct toxic effect on the arterial wall, causing an inflammatory response. Exercise modifies many of these risk factors, ultimately lowering the inflammatory response of the arterial walls. Hormones, especially the presence of estrogen, has a healing effect on the arterial walls. The resident cells interpret this as an intrusion, "call for help", and inflammation results. Immune cells called monocytes circulating in the blood enter the artery wall, turn into macrophages and ingest the LDL particles, thereby turning into large "foam cells". The inflammation also causes a fibrous cap to be formed between the fatty deposits and the artery. These capped fatty deposits (called atheromas) narrow the blood vessel. This can lead to narrowing (stenosis) of the artery. The atheromas are fragile. When they rupture, a partial blockage can be quickly converted into a complete obstruction, resulting in a heart attack or stroke, depend ...
(Hits: 1800 | Votes: 0 | Visited: 0 | Added: 2005-05-22 09:35:19)
|
|
Cholesterol Info Guide
Cholesterol is a steroid lipid, found in the body tissues (and blood plasma) of vertebrates. It can be found in large concentrations within the liver, spinal cord, and brain. The name originates from the Greek chole- (bile) and stereos (solid) - researchers first identified cholesterol in solid form in gallstones. Cholesterol is primarily synthesized from acetyl CoA in the liver, although other sites include the intestines, adrenal glands and reproductive organs.Cholesterol is an important component of the membranes of cells, providing stability. It is the major precursor for the synthesis of vitamin D3, of the various steroid hormones, including cortisol, cortisone, and aldosterone in the adrenal glands, and of the sex hormones progesterone, estrogen, and testosterone. Cholesterol is excreted from the liver in the form of a secretion known as bile; it sometimes crystallizes in the gall bladder to form gallstones.Mostly insoluble in water, it travels in the blood stream in the form of lipoproteins. Low-density lipoprotein (LDL) carries cholesterol from the liver and intestines to the body cells, while high-density lipoprotein (HDL) carries it back for excretion.It is interesting to note that the cholesterol in LDL cholesterol and the cholesterol in HDL cholesterol are identical. The only difference between the two is the carrier molecule (i.e. the lipoprotein).Cholesterol often forms plaque deposits in the walls of arteries, a condition known as atherosclerosis, which is a major contributor to coronary heart disease when the buildup is such that it inhibits blood flow to the heart. The ratio of HDL to LDL is a commonly performed test, and the higher the ratio of these two, the lower the risk of heart disease.The American Heart Association provides a set of guidelines for total (fasting) blood cholesterol levels and risk for heart disease: ; Less than 200 mg/dl : Desirable level corresponding to lower risk for heart disease ; Between 200 and 239 mg/dl : Borderline hi ...
(Hits: 354 | Votes: 0 | Visited: 0 | Added: 2005-05-22 09:17:01)
|
|
Cholesterol Article 1
(Hits: 245 | Votes: 0 | Visited: 0 | Added: 2005-05-16 15:47:59)
|
|
|
|
|
|
Conditions and Diseases 
