Mild hypothermia - sxs
skin pale to the touch
shivering
loss of fine coordination of movement
normal mental status
Mild hypothermia - tx
replace wet clothes with dry, cover head/neck
protect from wind/cold, insulate from the ground
wrap hot water bottles or heat packs in dry clothing & apply to chest, armpits, back
if they can swallow without difficulty, give warm sweet nonalcoholic drink; cold fluid better than no fluid
after initial tx, if they can walk have them walk to warm up
Mild hypothermia - evac
Usually not needed
Moderate hypothermia - sxs
uncontrollable shivering
can’t perform complex tasks
confusion, apathy, sluggish thinking
slurred speech
altered gait
umbles: fumbling, grumbling, mumbling, stumbling
Moderate hypothermia - tx
same as tx for mild, plus:
move them slowly - rapid movement of cool blood from extremities back into core can cause arrhythmias
hypothermia wrap
don’t let them stand/walk for at least 30 min and only if mental status is normal - movement of cool blood from extremities can lower core temp again
Moderate hypothermia - evac
If they’re acting/feeling normal: Evac not needed
If normal mental status doesn’t return: Fast evac
Severe hypothermia - sxs
shivering has stopped
muscle rigidity
stupor progressing to coma
decreasing HR
decreasing RR
Severe hypothermia - tx
basically same as for moderate hypothermia
CPR if needed
non-freezing cold injury
aka frostnip
sxs
pins & needles sensation
tingling, throbbing
skin cold to the touch & maybe very pale or very red
non-freezing cold injury tx
protect area from further damage, get pt to warmer place, remove jewelry & wet clothing
skin to skin contact, e.g. holding affected part in warm hand or putting hand in armpit
avoid direct heat sources (can cause burns)
frostbite signs
blotchy skin; skin turns from red to white or pale
skin firm/hard
numbness or pain
frostbite tx
same as frostnip, plus:
don’t rub the affected area - can cause tissue damage
if far from professional medical care + no chance of refreezing, rewarm:
- put affected area in warm (just above normal body temp) water for 20-30 min
- severe burning pain, swelling, blistering color changes can occur
- don’t use chemical warmers - too hot
after rewarming, protect affected area for evac:
- clean pads between frostbitten fingers/toes
- wrap area in clothing
- pt should not use affected part after thawing - keep it still during evac
if risk of refreezing: don’t rewarm
- wrap/insulate to prevent accidental thawing & protect from injury
how to create hypothermia wrap
prepare wrap:
- foam pad on ground (for insulation)
- then waterproof sheet (as vapor barrier)
- then blankets/sleeping bags/clothing (for insulation)
position affected person:
- make sure pt is dry
- pt should be wearing a wicking layer of clothing
- use something absorbent covered by garbage bag as diaper (so urine doesn’t soak insulation)
- lay pt on wrap
add heat:
- wrap hot water bottles, warm rocks, or chemical heat packs in clothing and apply to neck, armpit, groin
wrap pt:
- add more insulation
- wrap em up
give pt warm sugar water