Effect of Cold on the Respiratory
System
The effect of cold varies with the type and duration of
application. When cold application is in the form of a douche (a douche is an
application of water by an apparatus that drives or throws water upon the
surface of the body or any part of it), the effect is to produce short, gasping
respiratory movements. This effect is more pronounced if the douche is applied
to the chest or upper part of the body. In asthmatics, a cold douche to the
chest tends to produce a paroxysm of asthmatic breathing because of reflex
vasoconstric-tion of pulmonary vessels and resultant reduction in surface area
for gas exchange. If cold application is in the form of a cold bath, following
the initial increase, there is a slowing of the respiratory rate, with an
in-crease in depth of respiration.
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