Forensic Aspects of Drug Abuse 2

Question 1

What kind of drug is alcohol classified as?

Answer 1

• CNS depressant

Question 2

What samples can be used for alcohol analysis?

Answer 2

• blood
• urine
• vitreous humor
• CSF
• bile
• breath

Question 3

What are the advantages of an alcohol breath analysis?

Answer 3

• noninvasive

- convenient

Question 4

What is a P considered on a breathalyzer?

Answer 4

0-49 mg%

Question 5

What is the A considered on a breathalyzer?

Answer 5

50-99 mg%

Question 6

What is an F on a breathalyzer?

Answer 6

100 mg% or greater

Question 7

What law is a breathalyzer based upon?

Answer 7

• henry’s law

Question 8

What is henry’s law?

Answer 8

• the concentration of gas dissolved in a liquid phase is directly proportional to the partial pressure pf the gas in a gaseous phase that is in equilibrium with the liquid

Question 9

3-5 minutes after drinking alcohol, what is being tested?

Answer 9

• mouth alcohol

Question 10

____ of alcohol is absorbed in the stomach

Answer 10

30%

Question 11

____ of alcohol is absorbed in the small intestine

Answer 11

70%

Question 12

What is the rate of absorption affected by?

Answer 12

• food in the stomach
• speed of consumption
• concentration of alcohol
• drugs (nicotine and caffeine slow rate of abs), disease, emotional state

Question 13

How do carbonated beverages keep the pyloric valve open?

Answer 13

• carbonation keeps the pyloric valve open- carbonation helps with the absorption of alcohol

Question 14

What is the typical rate of social consumption of alcohol?

Answer 14

3-4 drinks per hour

Question 15

What % concentration is the most efficient rate of absorption?

Answer 15

20%

Question 16

What organs have a higher alcohol concentration?

Answer 16

• liver
• intestine
• brain

Question 17

What is the widmark hypothesis?

Answer 17

alcohol is distributed in the body in proportion to the water content of the tissues

Question 18

What does BAC depend on?

Answer 18

• body size (weight)
• body fat (body type)
• gender

Question 19

Is BAC higher in those with a higher fat content or lower content?

Answer 19

• higher fat content

Question 20

Absorption = BACxWtx0.022

FOR MEN

Answer 20

abs = mL of liquor
BAC = blood alcohol concentration
wt=KG

Question 21

Where does most elimination occur for alcohol?

Answer 21

• 90-98% of metabolism occurs in the liver

alcohol-> acetaldehyde -?acetate -> CO2 and H2O

Question 22

Explain excretion with alcohol?

Answer 22

2-10% of elimination is unchanged (via breath, urine, feces, sweat, tears, saliva)

Question 23

What is the formula for elimination?

Answer 23

ELIM = metabolism + excretion

Question 24

What is the average BAC elimination rate for alcohol?

Answer 24

15 mg%/hour