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.
In the US and its territories, Canada, and the Caribbean, the organization and allocation of telephone numbers is governed by the North American Numbering Plan Administration (NANPA). The NANPA organizes the allocation of area codes and telephone prefixes to various phone companies.The basic format of a phone number in any of these countries is NPA-NXX-XXXX or (NPA) NXX-XXX.or instance, area code 800 (commonly referred to as 800-numbers) is reserved for toll free calls where the called party is charged instead of the calling party. Also, not all area codes are currently in use. Only 316 of the possible 1000 area codes are currently being used.