Journal of International Obstetrics and Gynecology ›› 2022, Vol. 49 ›› Issue (1): 95-100.doi: 10.12280/gjfckx.20210371

• Obstetric Physiology & Obstetric Disease:Original Article • Previous Articles     Next Articles

The Value of the Modified Caprini Risk Assessment Model in Predicting Pregnancy Associated Venous Thromboembolism

YAN Xin, YE Sheng-long, GU Xun-ke, ZHAO Xue-qing, LIU Yuan-ying, WANG Yong-qing()   

  1. Department of Obstetrics and Gynecology, Peking University Third Hospital, National Clinical Research Center for Obstetrics and Gynecology, Beijing 100191, China
  • Received:2021-04-22 Published:2022-02-15 Online:2022-03-02
  • Contact: WANG Yong-qing E-mail:mddoctor@163.com

Abstract:

Objective: To investigate the predictive value of the modified Caprini risk assessment model for pregnancy associated venous thromboembolism (PA-VTE). Methods: A retrospective case-control study was conducted, in which 49 PA-VTE inpatients from October 2012 to October 2019 in the obstetrics department of Peking University Third Hospital were the study group, and 98 non-PA-VTE cases were randomly selected as the control group. The differences between the two groups of PA-VTE risk factors in the modified Caprini risk assessment model were compared. The PA-VTE risk score and risk classification of patients in the two groups were analyzed by Caprini risk assessment model and the modified Caprini risk assessment model, and the correlation between risk classification and the occurrence of PA-VTE was analyzed. The predictive ability of the modified Caprini risk assessment model for PA-VTE was also evaluated. Results: ①Age, BMI≥25 kg/m2, preterm birth, fetal growth restriction, selective cesarean section, bed rest, hereditary embolism, medical complications, history of thrombosis or pulmonary embolism were the main risk factors for PA-VTE (P<0.05). ②There is a significant "dose-response" relationship between the risk classification and the occurrence of PA-VTE in both Caprini and modified Caprini risk assessment models (P for trend <0.001), that is, the risk of PA-VTE increases with the increase of risk classification. ③When the cut-off value was 3 points, the predictive value of Caprini and the modified Caprini risk assessment model for PA-VTE was the highest, with sensitivity of 0.531 and 0.694, respectively, and the difference was statistically significant (P=0.021). Conclusions: Both Caprini and the modified Capirini risk assessment model can be used to predict the occurrence of PA-VTE, but the modified Capirini risk assessment model has a higher sensitivity in predicting the occurrence of PA-VTE.

Key words: Pregnancy, Venous thromboembolism, Thrombosis, Validation studies, Caprini risk assessment model