Figures
- FIGURE 1
Venous thromboembolism (VTE) duration of anticoagulation based on risk. For pregnant women with prior VTE (especially those with an unprovoked or a hormone-provoked VTE), predicted recurrence risk during pregnancy is high enough to warrant both antenatal and postnatal thromboprophylaxis, whereas only postpartum thromboprophylaxis is recommended for women with lower predicted recurrence risks. The optimal low molecular weight heparin (LMWH) dose for women with prior VTE is currently being investigated in the ongoing Highlow study. Reproduced and modified from [14] with permission.
Tables
- TABLE 1
Risk factors for venous thromboembolism (VTE) during pregnancy and the postpartum period
Maternal characteristics Pregnancy characteristics Delivery characteristics Risk factor aOR Risk factor aOR Risk factor aOR Age >35 years 1.3 IUGR 3.8 Pre-term delivery 2.42.7 Parity ≥3 2.4 Pre-eclampsia 2.9–3.1 Prolonged labour NA BMI ≥25 kg·m−2 1.8–2.4 Multiple gestation 1.7–4.2 Instrumental delivery NA Smoker 2.1–3.4 Caesarean section 1.8–3.6 Comorbidity 1.6–8.7 Stillbirth 6.4# Varicose veins 2.4 MROP 2.2 Thrombophilia 3.2–34.4 PPH ≥1000 mL 4.1 Prior VTE 24.8 Infection 4.1–6.1 Family history of VTE NA Immobility 7.7–10.8 Adjusted odds ratio (aOR) values are representative and, for clarity, confidence intervals are not included. BMI: body mass index; IUGR: intrauterine growth restriction; MROP: manual removal of placenta; PPH: postpartum haemorrhage; NA: not available. #: incident rate ratio. Reproduced and modified from [12] with permission.
