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| ==Heat Edema==
| | #[[Heat Stroke]] |
| #Self-limited, mild edema of feet, ankles, and hands | | #[[Heat Exhaustion]] |
| #Appears w/in first few days of exposure to a hot environment | | #[[Heat Edema]] |
| ##Commonly seen in travelers just arriving from a colder climate | | #[[Miliaria (Heat Rash)]] |
| #Resolves spontaneously in days to weeks
| | #[[Heat Cramps]] |
| #Treatment
| | #[[Heat Tetany]] |
| ##Elevation of legs
| | #[[Heat Syncope]] |
| ##Use of support hose
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| ##Diuretics are contraindicated
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| ==Miliaria (Heat Rash)==
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| #Pruritic, maculopapular, erythematous rash over normally clothed areas of body | |
| ##See [[Media:Miliaria.jpg]]
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| #Pathophysiology | |
| ##Acute inflammation of sweat ducts caused by blockage of pores by macerated skin
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| ###Ducts become dilated under pressure and ultimately rupture
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| ####This produces superficial vesicles in malpighian layer of skin on a red base
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| #####May progress to miliaria profunda (white papules) if duct ruptures a second time
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| #Treatment
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| ##Antihistamines
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| ##Dicloxacillin or erythromycin if appears superinfected
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| ==Heat Cramps==
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| #Painful, involuntary, spasmodic contractions of skeletal muscles
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| ##Usually affects calves, thighs and shoulders
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| #Occurs to pts who are sweating profusely and replace fluid losses with water
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| ##May occur during exercise or during a rest period several hrs later
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| #Treatment
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| ##Self-limited
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| ##Pain is difficult to tx; often does not respond to opiates alone
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| ##Gatorade or NS IV
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| ==Heat Tetany==
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| #Hyperventilation > respiratory alk > extremity/circumoral paresthesia, carpopedal spasm | |
| #Differentiate from heat cramps based on little pain, no cramping in muscle compartments
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| #Treatment
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| ##Remove from heat, decrease resp rate
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| ==Heat Syncope==
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| #Variant of postural hypotension
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| ##Results from combination of volume depletion and peripheral vasodilatation
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| ##Occurs in nonacclimatized during early stages of heat exposure (esp elderly)
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| #Management
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| ##Diagnosis of exclusion
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| ##Remove pt from heat source, give PO or IV rehydration
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| ##Hospitalization usually is not necessary
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| ==Source==
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| Tintinalli
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| [[Category:Environ]] | | [[Category:Environ]] |
