Facts about hypertension (High Blood Pressure)


Blood pressure is a common condition in which the force of the blood against the wall of arteries. High blood pressure is a major risk factor for coronary heart disease, stroke, heart failure, peripheral vascular disease, and renal failure. High blood pressure is more likely to develop among people who are overweight or physically inactive or have high dietary salt intake. Normal blood pressure is 120 over 80 — the first figure is the important one and anything over 140 is considered high. Hypertension is one of the most frequently managed problems in general practice worldwide.

Blood pressure is the amount of force exerted on the artery walls by pumping blood. The heart pumps blood through the vessels. This added stress upon the arteries could possibly accelerate the distribution of arteries with fatty plaques (atherosclerosis). The risk factor for atherosclerosis includes cigarette smoking and high blood cholesterol. Atherosclerosis contributes to many heart diseases like heart attack and stroke.

Decreased flow of blood is detected in the brain, the kidneys and elsewhere. Nerve reflexes are stimulated and hormones are then produced. The heart is moved to beat more forcefully so that the blood pressure is maintained at a higher level, to overcome the restricted flow through the arterioles.

Hypertension usually produces no symptoms. This means most people don’t even realize they have it. Experts recommend that everyone should have their blood pressure checked regularly.

High blood pressure is a major risk factor for coronary disease, renal failure, peripheral vascular disease, heart failure, and stroke. It is more likely to develop among those who are overweight or physically inactive.

When the heart contracts the blood inside the left ventricle, is forced into the aorta and arteries. The blood then enters small vessels with muscular walls, called arterioles. The tone within the muscular walls of the arterioles determines how relaxed or constricted they are. If narrow, they resist flow.

The heart is induced to beat more forcefully so that the blood pressure is maintained at a higher level, to overcome the restricted flow through the arterioles. Reduced flow of blood is detected in the brain, the kidneys and elsewhere. Nerve reflexes are stimulated and hormones are then produced. The achievement of good flow (now at high pressure) eases possible problems for the function of the brain and kidneys. These adjustments happen normally. There are some people that the adjustments become fixed and high blood pressure persists. These people have developed hypertension.

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