Hypothermia is a condition in which the core body temperature drops below 35:0 C

Question

Hypothermia is a condition in which the core body temperature
drops below 35:0 C. A person su ering from hypothermia is usually treated
with warm (approximately 43:0 C) humidi ed air and intravenous (IV) fluids.
(a) [5 pts] Basal heat production is 1850 kcal/day at 37:0 C and increases to
three times higher at 33:0 C. The rate of heat production between these two
temperature can be assumed to be linear. Assuming that the heat capacity
of the body is approximately equal to that of water, how long would it take
to warm the body without any outside heating?

Explanation / Answer

Let a person is having 70 kg, hence the heat required between the given temperatures -

Q = (70*103 g)(4.18 J/g. C)(37-33) = 1.176*106 J = 1170.4 kJ = 0.279 kcal [ since 1 kcal = 4.184 kJ]

Therefore, the timer required for to increase the temperature

= (0.279 kcal)(24 hrs / 1850 kcal) (60 min / 1hr)(60 sec / 1min) = 13 sec

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