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.
1 a blood clot in the vessels of the lung (pulmonary embolism) 2  an infection in the airways such as bronchitis. 3  diseases that affect lung function such as asthma or COPD. 4  pneumonia. 5  obstruction of the airway caused by a foreign object (choking) 6  epiglottitis (infection of the tissue around the windpipe)  seizures.