Chemical pneumonitis and pulmonary edema can be caused by which of the following?
a. Nitrous oxide
b. Carbon dioxide
c. Excess amounts of nitric oxide
d. A combination of nitric oxide and nitro-gen dioxide
ANS: D
Nitric oxide and nitrogen dioxide combine to form a potent irritant that can cause chemical pneumonitis and pulmonary edema. Nitrous oxide, which is nicknamed laughing gas, can cause brain damage or death if inhaled without a sufficient oxygen supply.
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