Final answer:
Deep vein thrombosis (DVT) is a condition where a blood clot and inflammation develop in a deep vein, often in the leg. Prolonged immobility, certain health conditions, and factors like prolonged sitting can increase DVT risk. It can lead to serious complications such as pulmonary embolism if the clot dislodges and reaches the lungs.
Step-by-step explanation:
Deep Vein Thrombosis (DVT):
A condition in which blood clot and inflammation develop in the vein is known as deep vein thrombosis (DVT). This occurs when a blood clot forms in a deep vein, usually in the leg, as shown in Figure 17.8.1. DVT can lead to complications such as pulmonary embolism (PE) if the clot breaks free and travels to the lungs, which can be life-threatening. Factors like prolonged sitting, such as during air travel, greatly increase the risk.
Conditions like heart failure, as described by Ahaya, can also heighten the likelihood of developing DVT due to impaired circulation. Comprehensive management including leg exercises and frequent walking can mitigate the risk of clot formation during risky situations. A clot, known as a thrombus, can significantly impede blood flow or even block it entirely, increasing local blood pressure and placing additional strain on the heart.