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This 3D medical animation shows a blood clot forming in a lower leg vein, creating a deep vein thrombosis, or DVT. When the thrombus breaks free of the valve, it is called an embolus, and travels toward the heart and lungs. The animation ends by showing the embolus lodging in the lung tissue forming a life-threatening pulmonary embolism (PE). See more 3D medical animations from Nucleus Medical Art at http://www.nucleusinc.com/youtube

This condition causes more deaths each year than AIDS and breast cancer combined.

$John Heit, M.D., a cardiovascular physician at Mayo Clinic, received today a $1.1 million grant from the National Institutes of Health for its Genes, Environment and Health Initiative. Dr. Heit's grant will be used to study the genome-wide association of venous thrombosis (blood clots in the veins).Deep vein thrombosis is a blood clot in a vein — a blood vessel that returns oxygen-depleted blood to your heart. These clots are different from those that form in an artery — a blood vessel that carries oxygen-rich blood from your heart to the rest of your body. Risk factors for developing DVT include surgery, hospitalization for medical illness, major trauma (especially a long bone fracture of the leg), cancer and neurological disorders that cause leg weakness.When a blood clot (thrombus) develops in a vein, the danger is that it will break loose and travel to your lungs, where it can become stuck. This serious condition is known as a pulmonary embolism and, in some cases, the result is sudden death. It's estimated that each year about 1 million Americans have a DVT or pulmonary embolism episode; about one-third are fatal.Dr. Heit discusses the need to examine the role of genetics in DVT and the need for increased awareness of DVT:For more information from Mayo Clinic on DVT, click here: http://mayoclinic.com/health/deep-vein-thrombosis/DS01005$ Deep Vein...