Blood clotting as a protective reaction of the body
Blood clotting is a normal reaction of the body, aimed at protection from blood loss. Otherwise, even from the slightest cut, a person might die. Now hemophilia - a disease in which blood does not fold - is rare, but it is worth noting that it is congenital and transmitted by inheritance, and therefore can not be resisted. The trickery of hemophilia was that a person could die from internal bleeding, which is not visible to others. Hemophilia happens in men, but if we talk about women, then the bad sex is more often poor blood clotting, and not at all an hereditary pathology. There remains only a chance to treat, however, modern medicine only makes the first steps in the treatment of hemophilia.
In the body of a normal person, blood moves without obstruction through the blood vessels. In a flask or test tube, when taking blood for analysis, it also does not curl up. What is the secret of this property?
And the whole point is that the blood is curdled when the connections are broken in the bloodstream itself. Usually, when a person is injured, an uneven surface appears, which signals to the body that it is necessary to start the mechanism of blood clotting. First, a primary thrombus is formed near the lesion - loose in appearance. If you follow the process under a microscope, you can see how the filaments of fibrin fall out at the site of the lesion, and they hold the platelets. This is the result of the rapid work of the endocrine system, which responds first to such a "freelance" situation. Further, this thrombus will undergo certain chemical changes and become more dense. The thrombus formed at the site of injury is the stopper that prevents blood from escaping from the affected vessel. Later under it a new layer of tissues is formed, and he sluschivaetsya.
Usually, in order for the primary thrombus to form, it takes a half-minute - from now on the blood ceases to flow strongly, and can only be swallowed from under it.
Viscous thick blood that coagulates well, and fluid that coagulates badly - are equally problematic for the body. If the blood is dense, this can cause blood clots and cupping of blood vessels. If it is liquid, the time of blood loss can be prolonged.
Before surgery, doctors make a coagulogram - determine the coagulability of the blood. If it is normal, this greatly simplifies the course of the operation. If it is viscous or vice versa - liquid, then before the operation give special drugs that correct coagulability. Blood tests for clotting are especially important in childbirth, as in the event of an emergency, physicians should be prepared for transfusion. Earlier, when the blood processes had not yet been investigated, some women died of blood loss during childbirth. In modern maternity homes, such situations are predictable, so there is no reason to fear for the life of the mother and child.
Blood clotting parameters are involved in the analysis:
- time during which bleeding lasted - this time is normally up to five minutes. It is believed that after five minutes in a healthy human body, bleeding should stop.
- the time during which a thrombus is formed - usually within five to seven minutes after the onset of bleeding from a loose thrombus, a complete thrombus should be formed, which protects the vessel from leakage of blood.
- prothrombin time - for this time interval in the body prothrombin should be activated( up to twenty seconds).
Blood clotting is a mysterious process that has been studied for centuries. Finally, it has been studied, which makes it possible to apply this data to the treatment of blood diseases that are a vital threat to humans. And it can not but rejoice.