BLOOD ALCOHOL AND PHYSICAL IMPAIRMENT CHART

Blood Alcohol Concentration (% w/v) Stage of Alcohol Influence Clinical Signs/Symptoms
0.09-0.25 Excitement Beginning sensory-motor impairment Slow information processing

Loss of efficiency in finer performance tests

Emotional instability; loss of critical judgment

Impairment of perception, memory, and comprehension

Decreased sensory response; increased reaction time

Reduced visual acuity, peripheral vision and glare recovery

Sensory-motor incoordination; impaired balance

Drowsiness

0.18-0.30 Confusion Disorientation, mental confusion; dizziness

Exaggerated emotional states (fear, rage, etc.)

Disturbances of vision (diplopia, etc.)

Increased pain threshold

Increased muscular incoordination; staggering gait, slurred

speech

Apathy, lethargy

0.25-0.40 Stupor General inertia; approaching loss of motor

functions

Markedly decreased response to stimuli

Marked muscular incoordination; inability to

stand or walk

Vomiting; incontinence of urine or feces

Impaired consciousness; sleep or stupor

0.35-0.50 Coma Complete unconsciousness; coma; anesthesia

Depressed or abolished reflexes

Subnormal temperature

Incontinence of urine or feces

Impairment of circulation and respiration

Possible death

0.45+ Death Death from respiratory arrest

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