Depth of Burns and Clinical Signs - Class 5 Flashcards
types of burns
flame
hot liquids
contact
electricity
hot gases
chemicals
friction
exposure
radiation
hot liquids –>
water
grease
hot gases –>
air in closed area
chemicals
acids
bases
friction
rope burn
road rash
exposure
sunburn
frost bite
burn wound classification extent of burn
rule of 9s
lund and browder chart
rules of 9s
head
thorax
sacrum
genitals
arms
legs
head –> rule of 9s
in total: 9%
anterior: 4.5%
posterior: 4.5%
thorax –> rule of 9s
total: 18%
anterior: 9%
posterior: 9%
sacrum –> rule of 9s
total: 18%
anterior: 9%
posterior: 9%
legs –> rule of 9s
each leg is: 18%
anterior: 9%
posterior: 9%
both legs: 36%
genital area –> rule of 9s
1%
arms –> rule of 9s
each arm is: 9%
anterior: 4.5%
posterior: 4.5%
both arms together = 18%
lund and browder chart
used to classify the amount of burns on a pediatric pt
types of burns (classification)
superficial
superficial partial thickness
deep partial thickness
full thickness burn
superficial burns are the same as a
1st degree burn
where does cell trauma occur –> superficial burn
only to the epidermis
will bleeding occur –> superficial burn
no
d/t avascularity of the epidermis
what develops –> superficial burn
erythema (secondary)
dermal irritation (primary)
is there damage to the dermis –> superficial burn
NO
blister formation? –> superficial burn
no
healing –> superficial burn
2-5 days
superficial partial thickness (SPT) burns are the same as
second degree burns
where does damage occur –> SPT
through epidermis –> epidermal layer is completely destroyed
into upper layers of the dermis –> papillary layer
what layers of the dermis are involved –> SPT
papillary layer of dermis is involved
may damage upper reticular later of dermis
d/t vascular nature at the dermis –> SPT
vascular dilation helps to dissipate heat
blisters will form
pain –> SPT
extremely painful
what is SPT extremely painful
d/t the irritation of the nerve endings and pain sensors that survive the injury
healing –> SPT
5-21 days
deep partial thickness burns (DPT) is the same as
deep second degree burns
what does a DPT involve
destruction of the dermis
severe damage to the dermal layer
what is destroyed or injured –> DPT
most of dermal appendages
-nerve endings
-hair follicles
-sweat glands
how will the burn appear –> DPT
red
tan
white
dull looking
the deeper the injury
the more dull and white it will appear
pain –> DPT
painful
–> b/c not all of the nerve endings will be destroyed
the tissue may be –> DPT
anesthetic immediately after the burn
what may develop –> DPT
eschar
coagulum
secondary to the injury and necrotic tissue
evaporation –> DPT
tremendous amount of evaporation
grossly 15-20 times the normal amount through the injured area
d/t tissue and vascular destruction
healing –> DPT
some healing can occur from the periphery or epithelial islands
3-5 weeks w/o infection
what could infection cause –> DPT
development from DPT burn to FT burn
full thickness burn is the same as a
third degree burn
destruction of –> FT
all the epidermal and dermal layers
subcutaneous fat cell will also be damaged
extent of injury leads to –> FT
coagulation of necrosed cells
destruction of blood vessels
massive edema
cellular infiltration into the burn
eschar –>
dry and leathery
leaving burn rigid and non-pliable
nerve endings –> FT
completely destroyed
burn will be relatively pain free
color –> FT
will not blanch
infection –> FT
if infection occurs –> burn can convert to include destruction of the underlaying fascia, muscle and bone
fourth degree burn
electrical burn
destruction of –> electrical burn
from the epidermis down to and including the underlying bone
there may be –> electrical wounds
entrance and exit wounds
secondary to the type of electrical injury
internal injuries
what may occur w/ electrical burns
fxs of the underlying bones
PT –> electrical
gets ruled out for MI
burn wound
zone of coagulation
zone of stasis
zone of hyperemia
zone of coagulation
area that receives the most direct and intense heat
cells –> zone of coagulation
irreversibly damaged
skin death occurs
what is present –> zone of coagulation
tissue necrosis
eschar
zone of stasis contains
injured cells that will die w/in 24-48 hrs w/o specialized tx
blood supply –> zone of stasis
compromised by cellular and vascular changes
what occurs in the zone of stasis
infections +/or dying of tissues could result in conversion of partially salvageable tissues into necrotic tissue
zone of hyperemia
outermost area of burn
vasodilation and increased blood flow
site of minimal cell damage
recovery –> zone of hyperemia
w/in 7 days
w/ no lasting effects
currents will follow
path of least resistance
where is current density the greatest
entrance and exit points
tissue resistance –> greatest to least
bone
fat
tendon
skin
muscle
blood vessels
nerves
when does tissue damage occur
when electrical activity is converted into thermal energy
how will electrical current flow
most direct therapy from their point of entry to the point of grounding
follow path of least resistance
electrical burns include
entry and exit wounds
arc burns
flame burns
iceberg effect
electrical injuries can be deceiving
most damage can be hidden underneath the skin