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.
According to the National Institute on Drug Abuse, marijuana is the most commonly used illegal drug in America (marijuana is illegal in the sense that it is a controlled substance under federal law, with no recognized legitimate value).ccording to the National Institute on Drug Abuse, marijuana is the most commonly used illegal drug in America (marijuana is illegal in the sense that it is a controlled substance under federal law, with no recognized legitimate value).