Screening coagulation tests in normal pregnancy

Abstract

The objective: to evaluate the performance of screening coagulation tests in normal pregnancy. Materials and methods. A study of screening coagulation tests was conducted with the participation of 124 patients with normal pregnancy in terms of 12–14, 20–22, 28–30 and 37–40 weeks of gestation. The control group consisted of 82 patients who were at the pregravid stage of pregnancy planning. Coagulation tests were determined on a HELENA 2000 coagulometer. Namely, the activated partial thromboplastin time, the percentage of prothrombin by Quick and fibrinogen were examined. Results. During normal pregnancy, a dynamic, statistically significant increase in plasma fibrinogen level was determined. This indicator during full-term pregnancy differed from that of non-pregnant women by 1.8 times. During all normal pregnancies, there was no statistically significant dynamics of the activated partial thromboplastin time and the percentage of prothrombin by Quick, but there was a tendency towards these indicators increase in coagulation potential with an increase in the gestation term. Conclusion. When assessing a screening coagulation tests, pregnancy term should be taken into account first of all, rather than comparing the obtained values with reference indices for non-pregnant women. Keywords: screening coagulation tests, hemostatic system, fibrinogen level, prothrombin percentage by Quick, activated partial thromboplastin time.