is high blood pressure a cause for coronary heart disease?
if so how?
Heart Diseases - 6 Answers
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1 :
heart disease due to an abnormality of the arteries that supply blood and oxygen to the heart Well, i forgot my biology notebook at school, so my answer will be vauge but our liver makes cholesterol which, if we eat to many fatty foods, can increas in the arteries and this causes blood pressure if i'm not mistaken and what this does is make the heart work harder to pump the blood around which in turn, can lead to the lack of oxygen provided by the heamaglobin so to sum up: heart has to work hard to get blood around, and high cholesterol is what makes that difficult, and that makes it harder for the boold to carry oxygen around hope this helps
2 :
Definitely. I can't remember why, but high-blood pressure, smoking, obesity, inactivity..they're all causes of it.
3 :
High blood pressure does not CAUSE coronary artery disease, that we know of, however having CAD is often associated with also having hypertension. Because the heart is not getting all the blood it wants various pathways are activated that tell the body that the blood pressure must be low.
4 :
Yes, high blood pressure is one of the causes for the coronary artery disease (CAD), say coronary thrombosis that causes an acute myocardial infarction (MI). At this stage it has to be remembered that the heart is supplied with its oxygen and nutrition through the coronary arteries only; and these arteries are all end arteries; and the heart is the only organ in our body that works continuously without an absolute rest throughout our life, right from birth to death; and thus it is at the low diastolic blood pressure that is when the heart is in diastole (relaxing) only that it can be supplied blood through the coronary arteries that is necessary for proper oxygen supply and nutrition of the heart muscle failing which the heart muscle dies. In this way a sustained high blood pressure, especially the diastoloc, impeades / slows down the required blood flow / supply to the heart through the coronary arteries causing its anoxemia resulting finally into an infarction ( death of the heart muscle). And such high blood pressure causing a slowing down of the blood flow in the coronary arteries causes the blood in these arteries to get clotted and thrombosed in due course resulting in a blockage to the blood supply to the heart causing death. Thus in short when the blood pressure, especially the diastolic pressure is constantly high sufficient blood cannot flow through the coronary arteries to the myocardium resulting in the death of the heart muscle, which may be mild, moderate, severe, partial, or complete......
5 :
Several factors predispose the coronary arteries to the development and progression of the atherosclerotic process . Cigarette smoking, hypercholesterolemia, and hypertension can induce changes in endothelial structure and function and promote smooth-muscle-cell proliferation. Diabetes mellitus, genetic factors (family history of premature CAD, ethnic characteristics), male gender, advancing age, and menopause are other strong risk factors that contribute to the progression of coronary atherosclerosis. Additional factors implicated in an increased risk of CAD are physical inactivity, obesity, and psychological factors. Studies indicate that elevated plasma homocysteine levels may also predispose to atherosclerosis, because homocysteine impairs nitric oxide production, stimulates smooth-muscle proliferation, and increases thrombogenicity. Myocardial Oxygen Demand: Most episodes of angina arise from increases in oxygen demand during physical or emotional stress. Myocardial oxygen demand is determined by heart rate, myocardial contractility, and myocardial wall tension. Wall tension, in turn, is related to chamber pressure and volume. An increase in any or all of these variables may develop during exercise or emotional stress and may precipitate myocardial ischemia in patients with compromised oxygen supply. Myocardial Oxygen Supply: Myocardial oxygen supply is determined by coronary blood flow and the arteriovenous oxygen difference across the coronary bed. Because the arteriovenous oxygen difference is near maximal at rest in most patients, changes in oxygen supply are almost entirely mediated by alterations in blood flow. *hypertension increases myocardial oxygen demand and decreases myocardial oxygen supply.*
6 :
If untreated say like for 20 years and you have an enlarged heart then be expecting a triple bypass surgery, if your not taking medication
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