Review Article
Obstetric Thromboprophylaxis: The Swedish Guidelines
Table 1
Risk factors and their odds ratios (ORs) för VTE (1,2).
| | Prevalence (%) | Pregnancy OR | Postpartum OR |
| | Overweight (BMI > 28)1 | | | | | >28 BMI | 12.8 | 5 | 5 | | Familial thrombosis (first-degree relatives) | | | | | yes | 5.1 | 5 | 5 | | Age | | | | | <20 | 2.5 | 1.0 | 2.5 | | ≥20–<35 | 85.2 | 1.0 | 1 | | ≥35 | 12.4 | 1.0 | 1.2 | | Smoking | | | | | yes | 21.0 | 1.2 | 1.2 | | Parity | | | | | Primapara | 41.3 | 2.3 | 1.1 | | 1 birth | 35.4 | 1 | 1 | | 2 births | 15.8 | 1.3 | 1.7 | | >2 births | 7.3 | 2.6 | 1.8 | | Preeclampsia | | | | | Yes | 2.0 | | 3–5 | | Cesarean section | | | | | Yes | 11.0 | | 4.9 | | FV Leiden | | | | | Noncarrier | 89.1 | 1 | 1 | | Heterozygotes | 10.6 | 5 | 5 | | Homozygotes | 0.3 | 25–100 | 25–100 | | Protein S or protein C deficiency | 0.1 | 5–25 | 5–25 | | Prothrombin gene mutation | 2.0 | 5 | 5 | | Hyperhomocysteinemia | | 2–5 | 2–5 |
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1BMI > mean + 1SD in early pregnancy is regarded as overweight.
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