Coagulogram in pregnancy

When you are pregnant, the gynecologist will tell you to take a bunch of tests: mandatory, which all pregnant women must take in certain lines, and additional - if they need it. Coagulation during pregnancy is one of the mandatory tests. Do it once in a trimester (easier to say, once every three months). But if a woman becomes registered after the 12th week of pregnancy, then there will be two such studies: immediately when the woman is registered and before maternity leave - at 30 weeks.

Additionally, the analysis on the coagulogram during pregnancy is carried out after the course of treatment, if there were abnormalities in the rates, and before giving birth, if you will be given a caesarean section. Blood on the coagulogram during pregnancy is also taken, as for biochemical analysis - from the veins and on an empty stomach.

What does the blood coagulogram show?

The main indicators of a healthy person coagulogram:

clotting time - 5-10 minutes;

Why change the results of coagulation during pregnancy?

Indicators of coagulation during pregnancy differ from usual, because the body is preparing for the forthcoming birth, to minimal blood loss during them, and the blood begins to curl up faster. This is noticeable even with a simple coagulogram, when only the number of platelets is determined - the blood elements from which the thrombus base is formed (normally their number is from 150 to 400 x 109 / L), the clotting time (5-10 minutes depending on the technique), the concentration fibrinogen and prothrombin index.

Blood coagulability increases physiologically, and this is evident when decoding some indicators:

Why give an extended coagulogram during pregnancy?

In some laboratories at once or at a deviation from norm or rate in simple coagulogram the expanded coagulogram at pregnancy is spent. But the direction for a specialized coagulogram is carried out for special indications: it is a multiple pregnancy , severe early and late pregnancy gestosis, intrauterine fetal death, hereditary blood diseases, long history of infertility, habitual miscarriage.

Activated partial thromboplastin time (APTT) shows the presence of clotting factors, without which it is impossible to form a blood clot. In pregnant women, it is shortened to 17 - 20 seconds (a thrombus from fibrinogen with their help is formed faster). Lupus anticoagulant should be absent in pregnant women, but appears in autoimmune diseases and late toxicosis of pregnancy, its presence leads to an increase in APTT. Thrombin time (11 - 18 seconds) in pregnant women increases to 18 - 25 seconds. This time is the last phase of blood clotting, when fibrin strands are formed from fibrinogen under the action of thrombin (coagulation factor).

What prevent changes in coagulogram in pregnancy?

If the parameters of the coagulogram are different from normal, then, first of all, we must pay attention to which side these changes occurred: blood coagulation increased or, conversely, slowed down. And do it better than a specialist. Indeed, a decrease in the coagulation capacity of blood can be the result of premature detachment of the placenta and hemorrhage: the reserves of coagulating blood factors are depleted and the intravascular coagulation syndrome, which is life-threatening to the mother, can develop. And the increase in blood clotting leads to a different kind of thrombosis.