death final Flashcards
created by failure of cells to receive or utilize oxygen
Asphyxial death
deprivation of oxygen can be partial or complete(terms)
hypoxia anoxia
classic signs of asphyxia 4
visceral congestion, petechiae, cyanosis, fluidity of blood
categories of asphyxial death 3
suffocation, strangulation, chemical asphyxia
asphyxial deaths can be 3
accidental, suicidal, or homicidal
strangulations # per year
286
asphyxiations not strangulation # per year
107
caused by inadequate oxygen in the immediate environment
entrapment/ environmental suffocation
normal level of oxygen
21%
4-6% oxygen consequences
loss of consciousness in 40 seconds, death in few minutes
autopsy findings in entrapment asphyxiation
acute visceral congestion, circumstances leading up most important
mechanical manual obstruction of airways
smothering
obstruction within the airway
choking
pressure outside body prevents respiration
mechanical asphyxiation
types of mechanical asphyxia 3
traumatic, positional, riot crush
caused by displacement of oxygen
suffocation
most common gasses in suffocation
carbon dioxide, methane
closure of blood vessels and air passages in the neck
strangulation
types of strangulation 3
hanging, ligature, manual
pressure to compress jugular veins
4.4 pounds
death by weight of body
hanging
death by some force other than weight of body
ligature
death at the hands of someone else
manual
autoerotic deaths per year
500-1000
% fire deaths occur in the home
90
categories of burns 6
flame, contact, radiant, scalding, chemical, microwave
percent of body burned based on rule of
9’s
red, swelling, no blister
first degree
moist red blistered
second degree
lesions, no blisters, scarring
third degree
incineration of skin
fourth degree
accidental ignition of clothing per year
150-200 deaths
burning death pose
pugilistic fighter pose
most people die in fires due to
smoke inhalation
self immolation
setting yourself on fire
which generally causes more injury acid or alkali
alkalies
colorless, odorless, tasteless gas
carbon monoxide
of deaths caused by CO anually
2700
most common CO death method
sucking a tail pipe
hemeprotiens like CO better than oxygen how many times
30-500
hemoglobins like CO over oxygen how many times
250-300
level of COHb in smokers
up to 15%
Low concentrations of CO can still
create high levels of COHb
At what % of COHb death
60%
sign of CO at autopsy
Cherry red livor mortis
CO can kill unborn baby even if mother lives
True
drowning deaths per day
10
Who is most likely to die of drowning
males
Drowning the leading cause of death children 1-4
true
in icy water max time of submersion of child
66 minutes
submersion victim that lives 24 hours after drowning
near drowning
drowning is a diagnosis of
exclusion, autopsy and tox necessary
drowning can be
homicidal
death by electrocution is normally
by accident
type of electricity most common to death
AC
how much more sensitive to AC vs DC
4 to 6 times
15-17 mA causes what
contracture of muscles
1A and higher causes what
ventricular arrest
at 50mA what can happen
muscles contract enough to break bone
of deaths from electrocution each year
1000
electrical burns tend to be where
palms, fingers, bottom of feet
lichtenberg figures, what type of injury
lightning strike
entry and exit wounds can be distinguished
False
suicide scenes should be processed as
homicide
suicide deaths per day
105
Who attempt suicide most often
women
who are successful in suicide most often
men
nearly all adult overdoses are
suicide
highest incidence of homicide in what two months
july and december
homicides are cleared more frequently because
90% of the time the victim is acquainted with killer
what are not present in homicide cutting deaths
hesitation marks
extremely large # of wounds indicate
homosexual rage
most profilers do what
background in law enforcement not psychology
what make a serial killer
3 or more with waiting period
hear voices or see visions
psychotic
don’t know right from wrong
psychopath
group considered psychotic
Visionary motive
wants to rid world of particular group
missionary-oriented
enjoy killing for the excitement
thrill oriented
pleasure derived in pain prior to death
lust
characteristics of serial killers as children
terrible triad, bed wetting, fire starting, animal torture
