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.
B. blood clot. Blood clots, often from a deep vein thrombosis, are the most common cause of a pulmonary embolism. Rarely, bone marrow, amniotic fluid, air bubbles, oxygen bubbles, and other things can also get into the circulatory system and cause a pulmonary embolism. Predisposing factors of pulmonary emboli include: