It represents the time from the end of ventricular depolarization to the start of ventricular repolarization. ST elevation may indicate myocardial infarction or pericarditis. ST depression may indicate ischaemia.
Marijuana has been illegal for less than 1% of the time that itâs been in use. Its known uses go back further than 7,000 B.C. and it was legal as recently as when Ronald Reagan was a boy.The marijuana (hemp) plant, of course, has an incredible number of uses.arijuana has been illegal for less than 1% of the time that itâs been in use. Its known uses go back further than 7,000 B.C. and it was legal as recently as when Ronald Reagan was a boy.
Nov. 24, 2010 -- Legal highs soon will be illegal across the U.S., the Drug Enforcement Administration (DEA) said today. The DEA is using its emergency powers to make K2, Spice, and other legal high herbal products Schedule I controlled substances -- that is, illegal drugs with no permitted medical use.The declaration will take effect after a mandatory 30-day waiting period, and will have the effect of law for at least a year.he DEA is using its emergency powers to make K2, Spice, and other legal high herbal products Schedule I controlled substances -- that is, illegal drugs with no permitted medical use. The declaration will take effect after a mandatory 30-day waiting period, and will have the effect of law for at least a year.