D04 - BIEN 130: Bioinstrumentation D04 May 20, 2009 Hyle...

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BIEN 130: Bioinstrumentation D04 May 20, 2009 Hyle Park Shahid Islam
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Chemical sensor-based bioinstrument Common example Breathalyzer Motivation for device Of the 42,000 traffic deaths in the United States in 1999, about 38 percent were related to alcohol. Gold standard test is a blood test for a direct measure of blood alcohol concentration (BAC) level Impractical in field Invasive (privacy) How to do this better?
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BAC level effects Euphoria (BAC = 0.03 to 0.12 percent) They become more self-confident or daring. Their attention span shortens. They may look flushed. Their judgement is not as good -- they may say the first thought that comes to mind, rather than an appropriate comment for the given situation. They have trouble with fine movements, such as writing or signing their name. Excitement (BAC = 0.09 to 0.25 percent) They become sleepy. They have trouble understanding or remembering things (even recent events). They do not react to situations as quickly (if they spill a drink they may just stare at it). Their body movements are uncoordinated. They begin to lose their balance easily. Their vision becomes blurry. They may have trouble sensing things (hearing, tasting, feeling, etc.). Confusion (BAC = 0.18 to 0.30 percent)
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D04 - BIEN 130: Bioinstrumentation D04 May 20, 2009 Hyle...

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