English Class Luka Bakar- Listrik- Forensik Unhas.ppt
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Transcript of English Class Luka Bakar- Listrik- Forensik Unhas.ppt
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Heat Trauma
Definition: Wound by touching outer or inner bodywith heat, cold, chemical reagent or electricity
Devided to:
1. Thermal Burna. Coldb. Heat :
* Scald (moist heat)* Burn (dry heat)
2. Chemical Burn3. Electrical Burn
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Cold Trauma
General Reaction: Pale skincaused by vasoconstruction
reddish due to vasodilatationvisceral
organ congestion
coma Autopsy:
* Heart contains of light red blood
* Visceral organ congestion* Light red of livor mortis with dark red blood
rashes
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Scald, Moist Heat
- Burn wound by heat liquid / gasses- 3 grade :* Erythema* Blister
* Coagulation / necrosisBurn (Dry Heat)
- There are 4 grades:
1. Erythema2. Blister3. Necrosis4. Carbonization
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Chemical Burn
- High concentrate acid
Skin/ tissue - Dry- Rough- Dark brown
-High concentrate alkalineSkin : - Smooth
- White- Soapy touch
Manner of death:-Usually accident-Murdering-Suicide
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General reaction of heat
1. Heat Exhaution- Increase of thermal body- Irregular pulse
- Collaps
death- Dark colour of heart erythrocyte2. Heat Stroke
Heat causes paralyse of thermal centrein medullatacchycardiacirculatory collaps
death
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Autopsy:- Congested organ- Dark blood in heart- Brain oedemaoccur by increasing of temperature and air
moist.3. Heat Cramps
Increasing temperaturemore sweatingincrease of ion Cl excretionmuscularspasms
General reaction of heat
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Severity of burn
The severity of thermal injury depend on:
A. The extent of the burned area
B. The severity of the burn
C. The age of the victim
D. The presence of inhalation injuries
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B. The severity of the burn
Can be described as :First degree (superficial burns)The skin is erythematouscongestedvessels in the dermis
* Second degree burns- Partial thickness burns subdivided into :
1. Superficial2. Deep
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Second degree burns
1. Superficial
Destruction of the striatum granulosumand cornium with the basal layer, nottotally destroyedheals withoutscarring.
2. Deep
Complete disruption of epidermis anddestruction of most basal layer
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Coagulation necrosis of the epidermis anddermis with destruction of the dermalappendagesscar
Third degree burns
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Incinerating injuries extending deeper thanthe skin
Fourth degree burns
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Intravital signs of burn wound
- Light red of livor mortis(cherry red)COHb
- Blister
- Respiratory tractdusty
- Inflammation of burn wound tissue.
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Intravital signs of burning cases
- Burn wound bullae
- Carbon in respiratory tract- COHb level : above 10 %, heavysmoker more than 25 %
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Cause of death:a. Fast : - CO intoxicationAsphyxia
- Larinx oedema- Neurogenic shock
b. Moderate : - Dehydrationc. Slow :- Renal failureAcute tubular necrosis
- CRLING ulcer- Sepsis- Auto intoxication
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Manner of death :
Murdering
Accident
Suicide
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Pseudoepidural
Haematome
Epidural
Haematome
Blood clot Brownish Blackish
Consistency Brittle Elastic
Brain shape Shrinkage Concaveaccording tocoagulated
bloodSkull linefracture
Unidentified Through medialmeningia artery
way
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Electrical Burn
The factor that influent electrical effect :1. Voltage Density
V = 60 Volt dangerous
2. Current Density> 65 mA dangerous
3. Current Path Resistence
Burn skinincreasing meassurement4. Time Duration of Current Flow
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5. Victim situation
- Consiousness or not- Victims occupation
- Health/sick
Cause of death :
Ventrikel fibrillation
Paralyze Centrum medulla
Paralyze Respiratory muscle
Electrical Burn
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Mechanism of death
Current Density is the most important factor,currents between 75100 mA causedventricular fibrilation. Extremelly high currents
1A/ higher usually cause ventricular arrest.Paralysis of the muscles usually caused by lowamperage electrocutionasphyxia
Paralysis of the respiratory center of the brainstemp caused by the hyperthermic effect of thecurrent (high voltage current)
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Electricution
Manners of death
* Accident
* Suicides* Homocides
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Autopsy:
1. Outer examination
- Electrical marks (current marks)
* Palm / plant* Dorsal hand, etc
Burnt skin, cloth or burnt hair may
occur
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2. Inner examination Heart filled with blood
Congestion of visceral organs Lung Oedema
Conjunctiva bleeding, pericard bleeding
Rhexis of muscles
Pearl like body on bone. Bone fracture
Autopsy:
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LightningStatic electric content in cloud with voltage up to 1
million volt and current density up to 100.000ampere in 1/10001 second released to earth.
Body disorders depends on:
1.Electrical ware factor
* Signs like electrical injury
* Arboresscent marking caused by blood vessel
dilatation
* Magnetisation
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2. High temperature factor (Electicalenergy)
W = V x Aheat
Heat:* Burning wound
* Metalization
3. Air exchange/ explotion factorblunttrauma
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