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blood alcohol concentration

   Also found in: Medical, Legal, Acronyms, Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
blood alcohol concentration
n. Abbr. BAC
The concentration of alcohol in the blood, expressed as the weight of alcohol in a fixed volume of blood and used as a measure of the degree of intoxication in an individual. The concentration depends on body weight, the quantity and rate of alcohol ingestion, and the rates of alcohol absorption and metabolism. Also called blood alcohol level.


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Adelaide researchers found brief naps of 10-15 minutes improved performance and alertness, while one to two hour naps caused sleep inertia or grogginess and alertness impaired for up to an hour afterwards, A two hour nap in the afternoon is also advised before the first night duty shift where sleep deprivation causes worker's performance to be as impaired as if having a blood alcohol concentration of 0.
The findings revealed that both groups have relatively low levels of knowledge regarding responsible drinking practices in three areas the identification of standard drinks, the minimum number of standard drinks required to reach the legal blood alcohol concentration (BAC) driving limit, and actions effective in lowering BAC.
Since 1997, about a third of those drivers killed in passenger vehicles have had a blood alcohol concentration above 0.
 
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