Which of the following is a risk factor for deep vein thrombosis (DVT)?

Immobility for long periods is a significant risk factor for the development of deep vein thrombosis (DVT). When a person is immobile, blood circulation in the legs can decrease, leading to blood pooling in the veins. This reduced blood flow increases the likelihood of clot formation, as stagnant blood is more prone to clotting. DVT can occur in various scenarios involving immobility, such as long flights, extended bed rest, or even prolonged periods of sitting.

In contrast, regular exercise promotes circulation and helps prevent blood clots. Low blood pressure does not directly contribute to thrombus formation; in fact, it may result in less strain on the vascular system. Frequent hydration is beneficial as it helps maintain proper blood viscosity, thereby reducing the risk of clotting. Understanding the relationship between immobility and DVT is critical for effective prevention strategies in clinical practice.