Commotio cordis. Commotio cordis (Latin, agitation of the heart) is an often lethal disruption of heart rhythm that occurs as a result of a blow to the area directly over the heart (the precordial region), at a critical time during the cycle of a heart beat causing cardiac arrest.
A ZIP Code is a five digit number that identifies a specific geographic mail delivery area. The acronym ZIP refers to Zone Improvement Plan, a plan implemented by the USPS in the early 1960âs to improve the sorting and delivery of mail. There are approximately 43,000 ZIP Codes in the United States.
As the question is phrased, there would be 799 possible codes, which would leave 282 available if 517 were in use. As of October 2012, there are 292 geographic area codes in the United States, plus 6 in the U.S. territories of Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and Northern Mariana Islands.