burns lecture Flashcards
deaths often occur during the healing process in burn centers are due to what ?
respiratory related illnesses such as pnemonia or infections. conditions such as SIRS, Sepsis, and ARDS.
loss of protective skin layers and fluid imbalance makes burn patients vunerable to…
infections
what is rhabdomyolysis?
a condition where muscle tissue breaks down and releases myoglobin in the blood stream
how does rhabdomyolysis lead to renal failure
due to the formations of casts (solidified proteins) in the renal tubule which blocks the filtration process
what is released by the pancrease and other organs during sever burns?
myocardial depressant factor
what does the release of MDF lead to?
decrease in myocardial contractility and can worsent the overall circulatory shock
why do burn patients have an increase in hematocrit?
this is because of the leakage of plasma from the damaged cappilaries resulting in a greater concentration of red blood cells
why are high voltage electricity injuries more likely to result in amputaions?
electricity causes sever internal damage such as coagulation necrosis in the tissues along its pathway.
burn injuries cause protein exudation. what happens to the oncotic pressure when proteins are lost into the interstitium?
the oncotic pressure decreases
because the oncotic pressure decreases due to the protein exudation what happens to the hydrostatic pressure?
hydrostatic pressure increases
a decrease in oncotic pressure and an increase in hydrostatic pressure causes what to happen?
it causes more fluid to leak out into the interstitial spaces (third spacing edema) which worsens hypovolemia and reducing cardiac output.
pass through electrical burns
electrical current moves through the body potentially damaging internal tissues/organs
flash burns electrical
the current jumps causing burns mainly to the skin
what is sick cell syndrome?
when burns cause cellular injury they can have a decrease in perfusion causing the release of cytochrome c which triggers self destruction in cells
burns trigger an inflamatory response, how does this contribute to edema?
the inflamatory response allows for an increase in vasodialation which increases capillary permiability allowing more fluid to pass through
zone of coagulation
- zone with the moste severe tissue damage.
- irreversible tissue loss due to coagulation
why is the area unsalvagable in the zone of coagulation
because of the blood stasis that cuts of oxygen supply
zone of stasis
- area can be save with early intervention
- requires reprofusion to restore blood flow
what is contracture
a complication from serious burns that when healed the muscles, tendons, and skin becomes stiff and impairs mobility
zone of hyperemia
- outermost layer where tissiue is least damaged
- recover is possible
biting electrical cords could rupture which arteria
labial artery
pull away reflex usually occurs witch what level of voltage?
6-16 milliamps
tetany occurs at high level voltages such as
up to 100 milliams and ubove
