What is associated with a very low Caprini risk category for venous thromboembolism?

The Caprini risk assessment model is a tool used to evaluate a patient's risk for venous thromboembolism (VTE), which includes deep vein thrombosis (DVT) and pulmonary embolism (PE). A very low Caprini risk category indicates that the patient is at minimal risk for developing these conditions.

Early ambulation is associated with a very low risk of VTE because it promotes venous return and reduces the likelihood of blood stasis in the lower extremities, which is a primary factor in the development of thrombi. When patients are mobilized early after surgery or during hospitalization, the enhanced activity encourages blood flow and can effectively prevent the formation of clots. This intervention is a fundamental component of VTE prophylaxis, especially in patients who might otherwise be immobile due to their medical condition or surgical procedure.

In contrast, mechanical prophylaxis, low-dose anticoagulation, and extended anticoagulation are strategies that are used for patients who have a higher risk of VTE. These strategies are applied to mitigate that risk rather than to keep someone in the very low risk category. Therefore, early ambulation stands out as an effective measure that allows patients to remain at minimal risk for developing venous thromboembolism.