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.
The use, sale and possession of cannabis (marijuana) in the United States is illegal under federal law. However, some states have created exemptions for medical cannabis use, as well as decriminalized non-medical cannabis use.n November 2013 Portland became the first city on the East Coast to legalize marijuana as voters passed an ordinance allowing adults to possess small amounts of the drug. Marijuana is still illegal under federal law, and is legal only for medical use under state law.