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Old 06-24-2012
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Question Which type of heat injury?

While touring the grounds of the Imperial Palace in Kyoto, a 75-year-old woman collapses suddenly. She remains conscious but says that she feels weak and light-headed. On physical examination by the nurse, her temperature is 35.2 C, pulse 93/min, respirations 17/min, and blood pressure 95/50 mm Hg. The temperature in the shade is 34 C with 90% humidity. One hour after drinking cool green tea, the woman revives and is able to return to her hotel. Which of the following terms best describes these findings?

a) heat cramps
b) thermal inhalation injury
c) heat exhaustion
d) malignant hyperthermia
e) heat stroke

Please try to explain you answer
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Old 06-24-2012
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Hi I think the answer is C) heat exhaustion, because heat exhaustion is a precursor to heat stroke, in heat exhaustion the compensatory mechanisms are hyperactive eg excessive sweating, which may lead to a decrease in body temp. In heat stroke there is a failure of compensatory mechanisms and thus body temperature will be above 40.
Hope that was helpful.
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Old 06-24-2012
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Default Heat exhaustion :D

No trying to explain my answer
According to case senario its quite a hot day (34*C and 90% humidity)- Don't ask me why i call that a hot day because right now in India we have approximately same temperature and it
Now coming back to patient
She is experiencing weakness and light headedness with decrease in BP and increase in core body temperature
From this we can think that its definitely from that bloody SUN
So we left with Heat cramps, Heat exhaustion and Heat stroke.
So why answer is Heat exhaustion-
as heat cramps occurs when we too much use up our muscles electrolytes due to some vigorous exercise or something like that but our patient is 75 year old lady.
Now why not heat stroke as according to goljian her core body temp. should be >40*C and she should have some mental status change but luckily our patient don't show any symptoms like that.
Now we left with option C. Heat exhaustion
Hope you understood my point. hehehe
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Old 06-24-2012
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i feel the answer is heat exhaustion....but i don't understand why her body temp is 35?????? if i'm not wrong that low temp is observed in hypothermia right?????

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Old 06-24-2012
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Quote:
Originally Posted by Casandra View Post
While touring the grounds of the Imperial Palace in Kyoto, a 75-year-old woman collapses suddenly. She remains conscious but says that she feels weak and light-headed. On physical examination by the nurse, her temperature is 35.2 C, pulse 93/min, respirations 17/min, and blood pressure 95/50 mm Hg. The temperature in the shade is 34 C with 90% humidity. One hour after drinking cool green tea, the woman revives and is able to return to her hotel. Which of the following terms best describes these findings?

a) heat cramps
b) thermal inhalation injury
c) heat exhaustion
d) malignant hyperthermia
e) heat stroke

Please try to explain you answer

i was pointing to this....is that drop due to excess sweating?????
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Old 06-24-2012
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C) Heat exhaustion

Walking around on a such hot day is a bad idea. The heat causes vasodilation and sweating, this results in the drop in BP. The body compensates by increasing HR and respiration. The purpose of the vasodilation + sweating was to cool down, so we have a drop in her temperature. If her body wasn't compensating well, with the above mechanism, her temp would go up and cause brain damage (heat stroke).
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Old 06-25-2012
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c) heat exhaustion, she felt dizzy since her BP went down.

Dont understand why her body temp is low, is it due to sweating???

Sweating will reduce body temp, think so...
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Old 06-26-2012
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Default correct answer :)

Correct answer is c) heat exhaustion

I believe that this temperature drop is due to vasodilatation and sweating.
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