Prophylaxis in nonorthopaedic surgery.

Surgery increases the risk (by 20-fold) of venous thromboembolism (VTE), but there are prophylaxis methods (mechanical, pharmaceutical or combined) that safely reduce the incidence rate of VTE. The administration of prophylaxis requires a prior assessment of the risks associated with the patient and with the type of surgery. The Caprini and Rogers scales classify patients into four VTE risk categories (very low, low, moderate and high). In pharmacological prophylaxis, the risk of bleeding should also be assessed. At this time, the recommendation is to administer prophylaxis to all patients: mechanical prophylaxis for low, moderate or high risk with contraindications for the administration of heparin; combined with heparin for very high risk; and with drugs such as low-molecular-weight heparin, unfractionated heparin and fondaparinux for moderate to high risk. These measurements should be kept until full ambulation, discharge, or at least seven days (for major oncologic and bariatric surgery, maintain for four weeks).