• Int J Gynaecol Obstet · Jun 2009

    Prospective, sequential, longitudinal study of coagulation changes during pregnancy in Chinese women.

    • Xing-hui Liu, Yong-mei Jiang, Hua Shi, Xin-ai Yue, Yue-fang Wang, and Hui Yang.
    • Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China.
    • Int J Gynaecol Obstet. 2009 Jun 1; 105 (3): 240-3.

    ObjectiveTo investigate changes and establish reference values for coagulation variables during normal pregnancy and after delivery in Chinese women.MethodsA prospective, sequential, longitudinal study with strict inclusion and exclusion criteria was performed with 232 Chinese women.ResultsProthrombin time, international normalized ratio, activated partial thromboplastin time, and activated partial thromboplastin time ratio were shorter, and platelet count decreased gradually during pregnancy, with no change in mean platelet volume; conversely, plasma concentration of both fibrinogen and fibrin/fibrinogen degradation product increased. All these variables were normalized during the postpartum. Reference values by gestational week were established for platelet count, fibrinogen concentration, and fibrin/fibrinogen degradation product concentration.ConclusionsThese reference values may be used in the health assessment of pregnant women with a similar socioeconomic and ethnic background.

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