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.
There are a variety of causes of blood clots. Signs and symptoms of a blood clot depend on the location, and may include: Blood clot in the leg (DVT): Pain, redness, and swelling in the area around the blood clot; Blood clot in the lung (pulmonary embolism): Shortness of breath, chest pain, and rapid pulse and breathing ; Blood clot in the brain (stroke): Loss of vision and speech, and weakness on one side of the body