Why should you not heat the reservoirs of a bubble humidifier used with an oronasal O2 delivery system?
a. Condensate will obstruct the delivery tubing.
b. Heating will melt the reservoir or cause a fire.
c. Heating will absorb the extra water vapor.
d. Heating will cause too much aerosol im-paction.
ANS: A
Heating the reservoirs of these units can increase humidity content but is not recommended be-cause the resulting condensate tends to obstruct the small-bore delivery tubing to which they connect.
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