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07 July 2021: Clinical Research

Application of the RCOG Risk Assessment Model for Evaluating Postpartum Venous Thromboembolism in Chinese Women: A Case-Control Study

Ying-Zhou Ge 123ACDEF , Chen Zhang 123CD , Yan-Qing Cai 123ABE* , He-Feng Huang 123AEG**

DOI: 10.12659/MSM.929904

Med Sci Monit 2021; 27:e929904

Table 2 Risk factors for postpartum VTE contained in the RCOG risk assessment model.

Variable*VTE group**n=38Control group**n=152χ2p Value
 Previous VTE not related to major surgery4 (10.53)0 (0.00)10.350.001
 Medical comorbidities2 (5.26)3 (1.97)1.190.276
 Family history of VTE8 (21.05)10 (6.58)6.680.010
 Known low-risk thrombophilia4 (10.53)2 (1.32)6.030.014
 Age >35 years14 (36.84)25 (16.45)7.330.007
  BMI ≥301 (2.63)5 (3.29)
  BMI ≥400 (0.00)1 (0.66)
 Parity >31 (2.63)4 (2.63)0.001.000
 Smoker3 (7.89)2 (1.32)3.990.046
 Gross varicose veins1 (2.63)1 (0.66)0.970.324
 Pre-eclampsia2 (5.26)10 (6.58)0.090.766
 Multiple pregnancy4 (10.53)3 (1.97)5.030.025
 Cesarean section in labor18 (47.37)20 (13.16)19.46
 Elective cesarean section17 (44.74)71 (46.71)0.050.827
 Mid-cavity or rotational operative delivery0 (0.00)9 (5.92)1.230.267
 Prolonged labor (>24 hours)0 (0.00)3 (1.97)0.001.000
 PPH (>1 litre or transfusion)1 (2.63)5 (3.29)0.040.836
 Preterm birth4 (10.53)5 (3.29)3.170.075
 Surgical procedure in pregnancy or puerperium6 (15.79)4 (2.63)8.250.004
 Current systemic infection4 (10.53)7 (4.61)1.850.174
 Immobility, dehydration2 (5.26)2 (1.32)1.970.161
VTE – venous thromboembolism; BMI – body mass index; PPH – postpartum hemorrhage.
* Previous VTE provoked by major surgery, known high-risk thrombophilia, stillbirth, and hyperemesis are also factors contained in the RCOG risk assessment model, but they did not exist in our study population, thus they are not included in the table.
** data are presented as number (percentage).

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750