Blood Clots

US emergency room visits for irregular heartbeat soar

Emergency room visits for atrial fibrillation have increased significantly in the United States—causing a major healthcare burden, according to research presented at the American Heart Association's Scientific Sessions ...

Nov 16, 2014
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A thrombus (Greek θρόμβος), or blood clot, is the final product of the blood coagulation step in hemostasis. It is achieved via the aggregation of platelets that form a platelet plug, and the activation of the humoral coagulation system (i.e. clotting factors). A thrombus is normal in cases of injury, but pathologic in instances of thrombosis.

Mural thrombi are thrombi adherent to the vessel wall. They are not occlusive and affect large vessels, such as heart and aorta. Grossly they appear grey-red with alternating light and dark lines (lines of Zahn) which represent bands of fibrin (darker) with entrapped white blood cells and red blood cells (lighter).

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