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29 Cards in this Set

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All victims of hypothermia should have the following care:
*remove wet garments
*protect against further heat loss(apply blankets, insulating materials, moisture barriers)
*Maintain pt in horizontal position
*avoid rough handling(can trigger dysrhythmias)
*monitor core temp
*monitor cardiac rhythm
p1419
Warm blankets, heat packs, IV fluid heaters, warmed IV fluids (95-100 deg) are examples of
Active rewarming
p1419
Active rewarming of severely hypothermic pt is best done in
the hospital using a prearranged protocol
p1419
Most pts who die during the rewarming die from ?
V-FIB
p1419
Rewarming shock is caused by reflux peripheral vasodilation, what happens during this process?
Reflux peripheral vasodilation causes the return of cool blood and acids from the extremities to the core which will cause a decrease in core temp and possible acidosis
p1421
Cold diuresis causes volume _____
depletion
p1421
BLS resuscitation for Cold Disorders
*immediate CPR
*If AED is avail, a single shock can be given (if Advised), further shocks should be avoided after rewarming to above 86degF
*CPR, rewarming, and rapid transport should immediately follow defib attempt
p1421
ALS resuscitation for Cold Disorders
*intubate pt and ventilate w/ warm humidified O2
*Drug metabolism is reduced, so meds may remain in the peripheral circulation at toxic levels(when pt is rewarmed and perfusion resumes toxic levels may enter the central circulation)
*AHA recommends if pt fails to respond to defib attempts and initial drug therapy, HOLD OFF on more meds and defin attempts until core temp is 86F.
*Warmed IV fluids should be injused centrally at 150-200mL/hour
p1421
Gentle transport is necessary due to ________
Myocardial Irritability
p1422
Name the 2 types of frostbite:
*Superficial(frostnip)-freezing of epidermal tissue, initial redness, blanching, diminished sensation
*Deep frostbite- freezong of epidermal and subcutaneous layers, white appearance, area feels hard, loss of sensation
p1422
Treatment of frostbite
*Do not thaw afected area if possibility of refreezing
*Do not massage area or rub with snow
*Administer analgesia prior to thawing
*Transport to hospital for rewarming by immersion
*cover thawed part by loose, DRY, sterile dressing
*elevate and immobilize thawed part
*Do not puncture or drain blisters
*Do not rewarm frozen feet if requried to walk in hazardous situation
p1422-23
Trench foot (immersion foot) is similar to ____, but it occurs at temps above freezing
Frostbite
*symptons are similar , but there may be pain
p1423
Treatment for Trench foot
Warm, dry, and elevate the feet
*Measurements to avoid trench foot are to avoid prolonge exposure to standing water, change wet socks frequently, never sleep in wet socks or boots
p1423
Whats the difference between drowning and near-drowning?
Drowning- death occured w/in 24 hours of submersion
Near-drowning- death either did not occur or occured more than 24 hours after submersion
p1423
___ people die annually due to drowning
4500
p1423
40% of accidental drowning deaths occur in children under _ years old
5
1423
85% of drowning victims are ____, and ____ of these do not know how to swim
Male
two-thirds
p1423
Following submersion, if the victim is conscious, he will undergo a period of complete apnea for up to ___ minutes
3
p1423
When the victim is apneic, the PaCO2 in the blood rises to greater than ___mmHg, and the PaO2 of the blood falls below ___ mmHg
50
50
p1423
What is the difference between DRY vs WET drowning
DRY- 10% of drownings, a severe laryngospasm prevents water into the lungs
WET- the laryngospasm does not occur and a large amt of water enter the lungs
p1424
Persistent anoxia results in a deep coma, reflux swallowing continues causing gastric distention and increased risk of vomiting and aspiration, if untreated _____, _____, and death will occur in a short period
hypotension
bradycardia
p1424
Freshwater VS Saltwater drowning
*There are physiological differences but mechanistic differences make NO difference in prehospital management
Freshwater-washes away surfactant, alveoli collapse, V-FIB usually occurs
Saltwater- draws fluid from bloodstream, Pulmonary edema occurs
p1424
Factors affecting drowning or near drowning survival rates
*cleanliness of water
*length of time submerged
*age
*general health of victim
p1424
Some pts in cold water (below 68F) can be resucitated after ___ minutes or more in cardiac arrest
30
p1424
Mammalian diving reflex basically states that the colder the water, the more ____ is diverted to the heart and _____
Oxygen
brain
p1425
The initial field treatment for near drowning must be directed toward correcting the profound _____
hypoxia
p1425
All near drowning pts should be admitted to the hospital since complications may not appear for _____ hours
24
p1426
What is one of the more severe postresuscitation complications, with a high rate of mortality
ARDS (adult respiratory distress syndrome)-lungs leak fluids into the alveoli loaded with chemical factors causing severe inflammation and resp. failure
p1426
Possible complications to postresusctation near drowning incidents
*destruction of surfactant
*aspiration pneumonitis
*pneumothorax
*renal failure
*hypoxia
*hypercarbia
*mixed metabolic and resp. acidosis
*pulmonary parenchymal injury
p1426