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.
In addition, smoking also decreases the amount of oxygen in the blood and can cause the blood to clot more readily. HIGH BLOOD PRESSURE: Untreated or uncontrolled high blood pressure (hypertension) causes the heart to work harder and creates additional stress on the arteries. Blood pressure should be monitored regularly because often hypertension occurs without symptoms.