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.
California is currently using thirty two area codes, six of which were created as area code overlays. Area Code 628 is the most recent area code introduced. It was implemented as an overlay of area code 415 on March 21, 2015. California originally had three area codes, 213, 415, and 916 when the numbering system was established in 1947. By 1951, just four years later, California experienced sufficient growth in population and telephone use to need an additional area code.