examination of drunk person
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ASHISH Kr. TRIPATHI
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A person under the influence of alcohol who have lost control of one’s faculties to such extent as to render him unable to execute safely the occupation in which he was engaged at particular time.
So all drunk have taken alcohol but all who have taken alcohol are not drunk.
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Request letter from authorized body(police) Consent of the drunk person
but if drunk person reject , then he
Can be examined even with the
help of police
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History General examination Laboratory investigation
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The history of the relevant event should be obtained from the accused.
Enquire about present health status. Past and personal history about alcohol and
other addictions(CAGE). Social and family impacts of his/her habits.
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Vitals Eyes Skin Mouth General behavior Neurological
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General appearance Visual acuity(using the snellen’s chart) Intrinsic muscles : Pupil(Mc Ewan sign)
Reaction to light Extrinsic muscles : Convergence
Strabismus
Nystagmus
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General state of mouth, teeth & tongue. Smell of breath should be recorded.
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General manner Speech State of dress Self control
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Memory and mental alertness Reflexes Handwriting Muscular co-ordination Stance Gait: -Manner of walking
- Reaction time to a direction to turn
-Manner of turning
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During collection of blood spirit must not be used for cleaning the skin
Skin is cleaned with soap and water or solution of 1:1000 mercuric chloride
Syringe must be free from any trace of alcohol Blood sample should be preserved by addition of
100mg NaF & 30mg potassium oxalate for 10ml blood followed by through shaking
10ml blood=100mg NaF+ 30mg pot. oxalate
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Kozelka and Hine test Cavett test
Principle: alcohol containing test substance reduces potassium dichromate solution.
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2 samples are required:- 1)as soon as possible following incident 2) after 25-30 minuteAt equilibrium blood :urine alcohol= 1:1.3As the time of 2nd specimen is taken as the time of equilibrium,soConc. In bloodConc. In blood=1/1.3 =1/1.3 xx conc.in urine conc.in urine
Disadvantages:-1. Max. concn. In urine reaches 20-25 min later than blood2. After max. concn in blood, Urine conc.= blood conc.+ 20-30 % of blood conc.3.Alcohol may passes on either direction through the lining of the
bladder depending on relative concerntration of alcohol in blood & urine
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Breathalyser: Gold Standard method Principle:
Alcohol absorbs radiation in infra red region of the spectrum and amount of infra red(I) absorbed by the vapour is directly proportional to the amount of alcohol(A) in that vapour.
I α A
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c/f: 1.Smell of alcohol in breath 2.Slurred speech ,thick & unsteady voice 3.Loss of self control , clearness of intellect,
unsteady gait, vacant look & dilated pupils.
4.Incresed pulse rate
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Blood alcohol concerntration
< 10mg% sober
20-70 mg% drinking
80-100mg% Under the influence
150-300mg% drunk
> 400mg% Coma & death
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The essentials of forensic medicine and toxicology by Dr. K.S.N. REDDY 28TH edition.
Principles of forensic medicine by APURBA NANDY.
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IN VINO VERITAS
THANKYOU