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Blood alcohol content (BAC), also called blood alcohol concentration or blood alcohol level, is a measurement of alcohol intoxication used for legal or medical purposes. [ 1 ] BAC is expressed as mass of alcohol per volume of blood.
Under conditions of moderate alcohol consumption where blood alcohol levels average 0.06–0.08 percent and decrease 0.01–0.02 percent per hour, an alcohol clearance rate of 4–5 hours would coincide with disruptions in sleep maintenance in the second half of an 8-hour sleep episode.
For other countries, it may be easiest to convert to UK units. For example, in the United States one standard drink contains 14 grams ≈ 1.75 units of alcohol, and so a US standard drink takes the body about an hour and three-quarters to process. Blood alcohol content can more accurately be estimated by using Widmark's formula. [46]
It is based on the average rate at which someone can reduce blood alcohol concentration level, which is by 0.015 each hour (0.015 grams per 100 milliliters per hour).
The median lethal dose of alcohol in test animals is a blood alcohol content of 0.45%. This is about six times the level of ordinary intoxication (0.08%), but vomiting or unconsciousness may occur much sooner in people who have a low tolerance for alcohol. [11]
Missouri's maximum blood alcohol level for driving is .08% for persons over the age of 21 [50] and .02% for minors and adults under age 21. [51] Ordinarily, DUI is a misdemeanor in Missouri, although the third DUI conviction becomes a felony. [52]
Drunk driving in the United States. Drunk driving is the act of operating a motor vehicle with the operator's ability to do so impaired as a result of alcohol consumption, or with a blood alcohol level in excess of the legal limit. [1] For drivers 21 years or older, driving with a blood alcohol concentration (BAC) of 0.08% or higher is illegal.
“The test result showed Chaney’s blood alcohol level to be .33,” Taylor told WKRG. “The legal limit in Alabama for a person operating a commercial vehicle, or bus, in Alabama is .02.”
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