What is arterial pressure?

Each systole heart of the elastic walls of the aorta and other arteries are stretched to accommodate the new portion of blood. However, like a stretched spring, they resist stretching and strength press back to the blood. Therefore, during diastole heart blood continues to move. The force of cardiac contraction as if passed elastic artery walls, accumulated by them. This force with which the blood pushes against the walls of arteries and squeezed them, is called blood pressure. During systole heart rises, during diastole is reduced. So say systolic (or maximum) and diastolic (or minimum) pressure. With the help of a special apparatus doctors measure the pressure in the brachial artery, which is on average in healthy individuals 120/75 mm RT. Art. (i.e. during systole 120, during diastole 75). Causing the blood to move further from the heart, the power of the blood pressure gradually spent on overcoming friction between blood and blood vessels. So it becomes smaller and smaller, dropping into a large vein near zero. If the muscles of the arteries narrow alley vascular lumen, the heart has to work with more force to push the blood. The pressure increases. Especially great importance in this respect arterioles with their highly developed muscular layer. I. M. Sechenov called them "cranes" vascular system. When they expand, blood pressure is reduced, when narrowing it begins to grow.


Some people are under the influence of a number of reasons there comes a long, persistent muscle tension arterioles. Blood pressure rises. There is so-called hypertension. Long-existing hypertension causes a number of disorders in the body. First, excessive burden placed on the heartthat can drain it. Secondly, high pressure contributes to the development of vascular disease called multiple sclerosis. Of particular importance is the form, which is called atherosclerosis and representing as it obesity with hardening of the arteries. In the wall of the vessel is delayed a lump of fat-like substances - cholesterol. Deferred he usually available in the growth of muscle tissue. In incorporated lump cholesterol grows scar tissue. Formed plaque, convex scar, wibehouse in the lumen of the vessel. It is easier can occur thrombosis, blood clotting with blocked. If this happens in a vessel of the heart, there is a heart attack, death of part of the heart muscle. If a blockage occurs in the brain, there stroke, bleeding in the brain. How to prevent atherosclerosis and these unpleasant final catastrophe?
First of all, rational should be our fat diet.
First, we need to deliver in the body less building material, cholesterol. The main suppliers are butter, bacon, eggs. In the Sverdlovsk hospital in 50-ies brought a young man of 30 years with a massive heart attack. The patient died. At showdown was discovered such atherosclerosis, which in 90 years will not see. It turned out, the young man was demobilized from the army on TB. Because he was very exhausted, recommended better to eat that was not easy. The patient was arranged to work on a farm where he could drink up to 30 rejected eggs per day. So he did. Perfectly recovered completely overcame tuberculosis. However, in a few years died from severe atherosclerosis. So, eggs - product, no doubt, valuable, but they should have with respect, as in all, a sense of proportion: one egg a day or two in a day. As with all necessary for the body of water, if we are to drink 2 buckets a day, it is also to no good result. Completely exclude eggs from your diet for fear of their contribution to the development of atherosclerosis, it would be no less unreasonable than to abuse them. The fact that eggs - the main supplier of important substances - lecithin. The downside of it is as dangerous as the excess cholesterol. You want a definite correlation between cholesterol and lecithin.
Returning to the consumption of fats in General, I must say that the people of physical labor should be limited to 100 grams of fat per day, and the people sit and mental labour - 90 grams.
Secondly, it is necessary that these 100 or 90 grams, at least one third was liquid, vegetable oil. They contain so-called unsaturated fatty acids. Then discovered a lower propensity cholesterol is deposited in blood vessels. In the diet can include any oils (sunflower, corn, olive and other), according to our tastes and opportunities.
The reader may ask, did the author, what Chapter he writes. It was about the heart and blood vessels, but then we started talking about nutrition, which, judging from the book's table of contents, shall be in conversation 5. Remark fair! However, our physiological ensemble are the brightest example is inextricably dialectic of unity and interdependence of phenomena. The issues of rational fat nutrition is important for prevention of atherosclerosis. Therefore, we, running forward, talk about them in the conversation.
In addition to food, great importance has sufficient physical activity. About this we will have to say in a recent interview. Now we only note that the muscle work activates metabolic processes and as fuel when it along with carbohydrates can be used cholesterol and other materials for atherosclerosis. Therefore vessels former athletes always 10-20 years "younger"than those of the same age, are not involved in sports. Younger in the sense that they are much less affected by atherosclerosis.
Finally, an important risk factor in the origin of atherosclerosis is Smoking. About it we will talk.
In addition to these three pillars that underpin the development of atherosclerosis and which, therefore, should build its prevention in healthy people, we must remember about the huge influence of hypertension. It dramatically accelerates the development of atherosclerosis. Meanwhile hypertension quite insidious. Often people with high blood pressure, feeling good and not go to the doctor. Therefore, as soon as hypertension identified, it is necessary to start its treatment, to fulfill all the instruction of a therapist, a cardiologist, and not to wait until a sharp deterioration forced to go to the hospital.