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a modification of the respiratory rhythm caused by the inhalation of an irritating vapor.
Etymology: Gk, pnoe, breath; L, reflectere, to bend back
a change in the normal breathing rhythm when an irritating gas is introduced into the lungs.
A change in respiratory depth and rate, coughing, suffocation, and pulmonary edema when an irritant vapor is inhaled.
See also: reflex
pne·o·pne·ic re·flex(nēop-nēik rēfleks)
Modification of respiratory rhythm caused by inhalation of an irritating vapor.