See also: List of states and territories of the United States. This table includes abbreviations for three independent nations related to the United States through Compacts of Free Association, and other comparable postal abbreviations, including those now obsolete. Codes and abbreviations for U.S. states, territories and other regions.
Pulmonary embolism is the sudden blockage of a major blood vessel (artery) in the lung, usually by a blood clot . In most cases, the clots are small and are not deadly, but they can damage the lung. But if the clot is large and stops blood flow to the lung, it can be deadly.
Pulmonary embolism or blood clots in the lungs is a problem which occurs when one or even more arteries in the lungs are blocked. In many cases, blood clots in the lungs are caused by clots of blood that flow to your lungs from another area of the body â most frequently, your legs.Blood clots in the lungs can happen in people who are otherwise healthy.n many cases, blood clots in the lungs are caused by clots of blood that flow to your lungs from another area of the body â most frequently, your legs. Blood clots in the lungs can happen in people who are otherwise healthy.