What is a significant risk associated with untreated DVT?

Untreated deep vein thrombosis (DVT) poses a significant risk of developing a pulmonary embolism (PE), which is a serious condition that occurs when a blood clot from the deep veins, typically in the legs, dislodges and travels to the lungs. When this happens, the clot can obstruct blood flow in the pulmonary arteries, leading to a range of complications, including respiratory distress, decreased oxygen levels in the blood, and potentially death if not treated promptly.

The link between DVT and PE is well-established, making the risk of pulmonary embolism the most critical concern in the context of untreated DVT. Immediate medical intervention for DVT is crucial to prevent this potentially life-threatening complication, as it can occur without warning and requires urgent medical attention.