Commotio cordis is defined as a cardiac concussion with significant electrical disturbance when force is applied to the thorax during a vulnerable phase of ventricular repolarization. Commotio Cordis is the second highest cause of death in athletes.
As of June 1, 2013, there are 293 area codes in service in the 50 states, plus 1 for DC and 6 for various external territories of the United States (Puerto Rico, U.S. Virgin Iâ¦slands, Guam, American Samoa, and the Northern Mariana Islands), plus 10 more that are scheduled to be added in the coming months.
This category lists the telephone area codes in the United States. Area codes in the North American Numbering Plan area may not contain 0 or 1 as the first digit. This category has the following 3 subcategories, out of 3 total. âº Area codes in the United States by stateâ (50 C) âº Area codes in Washington, D.C.â (1 P)