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.
A clot that forms in one part of the body and travels in the bloodstream to another part of the body is called an embolus. Pulmonary embolism is a serious condition that can cause: Permanent damage to part of your lung from lack of blood flow to lung tissue. Low oxygen levels in your blood.