Which of the following statements regarding large-volume jet nebulizers is true?
a. Gas is brought down the siphon tube into the liquid.
b. Lateral pressure increases around the air-entrainment ports.
c. Baffling removes the larger particles from the generated aerosol.
d. Inspiratory flow can be increased by clos-ing the air-entrainment ports.
ANS: C
The resulting low pressure generated at the jet draws fluid from the reservoir up to the top of a siphon tube, where it is sheared off and is carried in the gas stream. Inspiratory flows decrease as the air-entrainment port is closed.
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