Condensation will form in large-bore corrugated tubing during the delivery of bland aerosol be-cause the:

a. gas is warmed by ambient air. c. gas is cooled by ambient air.
b. corrugated tubing is too short. d. particles are suscep-tible to gravity.

ANS: D
The liquid particles suspended in gas grow larger and heavier, condense, and then fall out be-cause large particles are more susceptible to gravity than small particles. If the ambient air is warmer than the gas carrying the aerosol, the gas will warm, increasing its capacity to hold water, thereby preventing rain out in the tubing. The shorter the tubing, the less time there is for the rain out to occur before the aerosol reaches the patient. The ambient air in the hospital setting is usu-ally at or warmer than the temperature of the gas carrying the aerosol. So, the gas will not cool off as it flows to the patient unless it is a heated aerosol.