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Risk Factors—Venous Thromboembolism
| Surgery |
| Age > 50 years old |
| Trauma |
| Immobility, paresis |
| Malignancy |
| Cancer therapy |
| Hypercoagulable state |
| Previous deep vein thrombosis |
| Pregnancy |
| Estrogen therapy |
| History of myocardial infarction |
| Atrial fibrillation/cardiac dysfunction |
| Diabetes |
| Acute medical illness |
| Heart or respiratory failure |
| Inflammatory bowel disease |
| Nephrotic syndrome |
| Paroxysmal nocturnal hemoglobinuria |
| Obesity |
| Smoking |
| Varicose veins |
| Central venous catheterization |
