Watch this video about blood clots on HowStuffWorks. New research in deep vein thrombosis (DVT) treatment shows that combining a clot-dissolving drug with a clot removal device helps to remove blood clots in the body faster and reduces patient risk for pulmonary embolism and disability. Two million Americans develop DVT each year, a condition widely publicized following the death of NBC correspondent David Bloom in Iraq in 2003. See how blood clots work in this video from MultiVu.