Abstract: Objective: To explore the application of the RCOG (Royal College of Obstetricians and Gynaecologists) model of thrombosis risk assessment in the prevention of maternity venous thromboembolism (VTE). Methods: A total of 2 089 puerperas delivered in our hospital were included from May 2015 to June 2016. They were randomly divided into the control group and the observation group. Puerperas in the control group were treated by traditional nursing to prevent VTE. Based on the RCOG model, those puerperas in the observation group were classified and treated by corresponding intervention. The levels of prenatal and postnatal blood D-dimer in two groups, and the morbidity of VTE, were compared. Results: There was not significant difference in the level of prenatal blood D-dimer between two groups (P＞0.05). The level and the positive rate of postnatal D-dimer in the observation group were significantly lower than those in the control group (P＜0.05). The ratio of puerperas with the increased postnatal D-dimer level in the observation group was much lower than that in the control group (P＜0.05). No puerpera in the observation group had VTE during the 6-week follow-up period, while 4 puerperas with the high VTE risk in the control groups had VTE, who were classified into the high risk or highest risk group following RCOG assessment model. The morbidity of VTE in the control group was higher than it in the observation group, but the difference was not significant (P＞0.05). Conclusions: The RCOG model of thrombosis risk assessment was effective in the classification of puerperas VTE risk, the decreased D-dimer level, and the prevention of VTE by corresponding intervention.

Key words: RCOG thrombosis risk assessment model, Models, statistical, Venous thromboembolism, Pregnant women, Postpartum period