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Flashcards in Forensic Topics Deck (82):
1

cause of death

why

2

mechanism of death

how

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manner of death

NASHU

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NASHU

natural
accident
suicide
homicide
undetermined

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physician can sign out

only can sign out natural death

everything else medical examiners

6

time of death

cannot be defined in a limited frame
-often based on scene when person last seen

7

rigor mortis

after 2-3 hours at room temp.
-peaks at 24 hours
-then flaciddity

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putrefactive decomposition

several days - room temp

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justice of peace, coroners, MEs, CSIs, police

medical examiner
-cause, mechanism (maybe), and manner of death

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forensic medicine

focus not natural death
-rule out foul play

11

medical examiner

no duty to family
-but to society

12

why do an autopsy

adds to case
-anyone can claim anything
-need solid evidence

13

wounding formula

W = E x 1/T x 1/A x K

inverse to time and area**

14

blacks and suicide

uncommon

15

highest death rates

blacks
-injuries, cancer, homicide, HIV

but no suicide

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more young men from 15-34

more violent crime

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abrasion

scrape

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contusion

bruise
-epidermis intact
-does not bleed externally

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laceration

from blunt force
-splits skin
-have bridging tissue

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stabbing/cutting

incise wounds
-not really lacerations

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ionizing radiation

causes leukemias and lymphomas

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household current

can electrocute

-construction worker who is sweating working on house

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cardiac arrest

not cause of death

-mechanism

24

shock

not cause of death

-mechanism

25

exanguination

not cause of death

-mechanism

26

if you can say due to

haven't gotten to cause of death

27

HIV patient

lymphoma > infection > death

cause of death - AIDs
mechanism of death - septic shock

28

AIDs

can be cause of death

29

wounds from blunt force

abrasion
contusion
laceration

30

skull of children

harder to fracture
-so you know there is lots of force

31

velocity

more important than mass
-fast small bullet more damaging than slow large bullet

32

contusion severity

force
vascularity
type of tissue
location of tissue
bruisability

33

yellow bruise

presence indicates bruise is 18 hours or older**

blue, purple, red don't assist in dating bruise

brown is mix of colors

34

abrasion

damaged epidermis

friction scraping away epidermis

oozes serum or blood

gliding - can be bad - ex. motorcycle accident

35

gliding abrasion

force is tangential to body surface
-rolls or heaps of tissue at wound margin

36

patterned abrasion

can be useful in forensics

abrasion recapitulate the surface appearance of the instrument

37

dicing injuries in vehicle accidents

windshield are different than passenger windows

passenger window - dicing injuries

38

stab wound

sharp force injury where depth is greater than length of wound

deeper than longer

knives, scissors, screwdrivers, etc.

39

ice pick under skull

unmistakable when you look at autopsy

40

civilian knives

single edged

should have blunt squared off side

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military knives

double edged

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overkill

means this was something personal

often - to face

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high velocity

exit larger than entrance

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low velocity

exit and entrance similar size

45

shored

bullet restricted from exiting

exit looks like entry

46

head shots

sharp outer table
beveled inner table

opposite for exit wound

47

suicide

often contact range gunshot

48

hot enough brain

head will explode

49

macro at crime scene

survey, document, safeguard live persons first

50

micro at crime scene

bio materals, specimin retrieval

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civilian knife

blunt side

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military knife

two sharp cutting edges

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cuts only on bony prominences

likely a fall

54

algor mortis

cooling of body

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rigor mortis

stiff

56

livor mortis

blood sinks to lower parts of body

57

mummification

dry climates

58

adipocere formation

body in water for a long time
-skin erodes - fat covers body

59

increasing drug resistance

bacteria, rickettsia, and viruses are 80% of emerging infectious diseases

60

common infection after burn

pseudomonas aeruginosa

61

intermediate gun shot wound

not likely a suicide

think homicide

62

tardieu spots

subdural or pleural petchiae

individuals who have been strangled

63

US homicide

highest in males 15-34

64

putrefactive decomposition

GI bacteria cause putrefaction of body wall
-RLQ - cecum first

65

ischemic brain with CO poison

basal ganglia

66

mercury detox

intracellular glutathione

67

vinyl chloride

angiosarcoma of liver

68

bleomycin

interstitial fibrosis of lung

chronic effect*

69

radiation complication

aplastic anemia

acute effect*

70

thimerosol

in vaccines
-thought to cause autism

probably wrong

71

cause of death

myocardial infarction

72

mechanism of death

cardiac arrhythmia

73

ecognine

metabolite of cocaine

74

eading cause of death in infants 1 month to 1 year

SIDS

yes legitimate COD

75

most common morph finding in child dying of SIDS

astrogliosis in brain stem

76

subsequent SIDS sibling

increased risk

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most common tumor of infancy

hemangioma

78

sudden death in child less than 1 year not due to SIDS likely

infection

79

teratoma before 4 months

likely benign

80

blasts in peripheral blood

never normal
-likely B cell ALL

81

severe classes of CF

1, 2, 3

82

smoker

cardiac arrhythmia
-decreases threshold for ventricular fib