Deep Vein Thrombosis: Warning Signs: How It Works, Explained Simply

Video Transcript

Deep vein thrombosis, often shortened to D V T, is a blood clot that forms in one of the deep veins, most often in the leg. The deep veins run within the muscle, and they carry most of the blood back toward the heart. When blood moves too slowly, or the vein wall or the blood itself is affected, a clot can form and block that flow. It usually affects one leg. Swelling, pain or tenderness, warmth, and redness or a change in colour are the common signs. Because it typically affects one side, a leg that becomes suddenly swollen or painful compared with the other deserves prompt attention. Deep vein thrombosis needs urgent medical evaluation. It is not something to wait out at home. Part of the clot can break away and travel through the veins to the lungs. That is called a pulmonary embolism. Sudden shortness of breath, chest pain that is worse when you breathe in, a rapid heartbeat, or coughing up blood are a medical emergency. Call emergency services immediately. Risk rises with long periods without moving, recent surgery or injury, pregnancy, certain medications, and some medical conditions. This video is for general education only. It is not medical advice. Ask your doctor what's right for you.