Many people have high blood pressure. Usually the problem is that this pressure is not noticed. It hurts, spurs the development of atherosclerosis, but a person will feel it all sometime later. This is if the blood pressure is high, but not too high.
Self-regulation
The farther from the heart, the more our arteries branch, shrink and turn into thin and delicate capillaries. If you hit these capillaries with high blood pressure, they will simply burst.
In this case, in our arteries there is such a self-regulation mechanism, when when the pressure rises, the vessel narrows and does not allow too much blood to pass through.
It turns out that the pressure is high, but the vascular resistance is also high. So, exactly the same amount of blood reaches the delicate capillaries, as always. Slyly arranged.
And this kind of self-regulation in the arteries resists increased pressure for a very long time, but then it does not cope, and the pressure breaks through this barrier.
Blood with all its dope presses on the wall of thin arteries, and any garbage dissolved in the blood begins to seep through the inner lining of the arteries into the thickness of the wall.
The walls of the arteries swell and this edema blocks their own lumen. The blood flows through them poorly after this, and something in the body may suffer from a lack of blood supply.
When this happens in different organs, the swollen and swollen walls of blood vessels only poorly let the blood pass through. But in our head, the brain is tightly packed in the bones of the skull. If the blood vessels inside the brain begin to swell from the water leaking out of the blood with all sorts of things dissolved in it, then the brain will also swell, wedge in the bones of the skull, and strangle itself. You will get the same hypertensive encephalopathy.
Hypertensive encephalopathy
When your arteries inside your head stop holding back the rise in blood pressure, your brain will begin to swell like raisins in a saucer of warm water. This will gradually lead to a headache, vomiting, anxiety or, on the contrary, lethargy, then convulsions will begin, and you can fall into a coma.
That is, this swelling of the brain inside the skull will be uniform and gradual. This is not a stroke, in which the vessel burst, the head ached sharply, and half of the body was taken away. Not. With hypertensive encephalopathy, the brain will suffer smoothly and all at once.
And when the opposite is also bad
Sometimes self-regulation in the arteries plays a cruel joke on them. If blood pressure has been increased for a long time, then the wall of the arteries becomes plump, strong and muscular. So it resists increased pressure better.
Every day, blood pounds on such a wall, and every day this wall, like a well-trained athlete, holds back the pressure and pumps up new muscles.
All this happens until you have to monitor the pressure and somehow control it. Sooner or later, the hypertensive begins to save himself with special drugs that lower blood pressure. And here an ambush awaits him.
The fact is that arteries are already accustomed to regulating constantly increased pressure. They have worked so hard for so long, they have lost the ability to relax and rest.
If the blood pressure is too low, the arterial resistance will still be high. And according to some kind of physical law, the blood flow through such a narrowed vessel will sharply decrease. The organ or part of the body that was supplied with blood by this artery will be affected. Sadness.
It turns out that if you bring yourself to a hypertensive crisis, when you really feel high blood pressure on your own skin, then it will be much more difficult to fix this matter. Don't bring it up!
