Heat and Cold Emerg. Ch. 30 Flashcards
How do peds and adults differ r/t temp regulation (6 ways )
- peds cant regulate temp well,
- have less SC fat
- cant shiver to increase temp,
- have higher BSA,
- higher metabolic rate,
- decreased ability to sweat
Definition of hyperthermia
temp > 99.5 degrees 2* to dysregulation (not the same a fever)
Hypothermia pathophysiology (5)
directly toxic to cells release of cytokines injury to vascular endothelium leads to ^ permeability can cause DIC
Heat rash
obstructed sweat glands
What are heat cramps? and what causes them?
2* DHN and electrolyte loss caused by exertion
Sings of heat exhaustion (5) and temp.
weakness, N/V, cramps, mental status ok, T* ,102.2
Signs of heat stroke (2) including temp.
T* > 104, AMS up to coma
heat stroke TX
NO NSAIDS, benzos to control shivering,
Hypothermia grades
I. mild T* 89.6-95 awake and shivering
II. moderate T* 82.4-89.6 AMS, not shivering
III. severe T* 75.2-82.4 coma, vfib
IV. severe T* <75.2 death, asystole
Osborn waves
At T* of 91.4 due to irritiblity knows as J waves
Hypothermia effect on CV system
tachy, then brady , then asystole
Hypothermia effect on Heme system
coagulation 2* to enzyme reactions
lab test may not be reliable as they rely on T*
Hypothermia effect on Resp system
hypoxia, ^ lactic acid levels
Hypothermia effect on renal system
fluid shifts 2* to cold diuresis leads to hypovolemia
rhabdo may occur
Rewarming types
passive, active