According to the American Association for Respiratory Care Clinical Practice Guideline: Humidification During Invasive and Non-Invasive Mechanical Ventilation, a heat moisture exchanger (HME) should:
A) not be used for more than 12 hours
B) not be used for more than 24 hours
C) not be used for more than 48 hours
D) not be used for more than 96 hours
Q. 2 According to the American Association for Respiratory Care Clinical Practice Guideline: Humidification During Mechanical Ventilation, a humidifier chosen should:
I. provide at least 30 mg/L water vapor
II. provide body humidity
III. provide a temperature of at least 30 degrees Celsius
IV. provide a temperature of at least 37 degrees Celsius
A) I and II
B) II and III
C) II and III
D) II and IV
Q. 3 Factors that can be applied to increase the efficiency of a humidifier are:
I. increased temperature
II. increased surface area
III. increased time for contact
IV. added baffle
A) I
B) I and II
C) I, II, and III
D) I, II, III, and IV
Q. 4 The difference between an atomizer and a nebulizer is:
A) the difference in operating pressure
B) the difference in the output's particle size
C) the size of the device
D) the presence of a baffle
Q. 5 A baffle or a wall distal to the jet of an aerosol generator:
I. stabilizes size of particles
II. removes larger particles from suspension
III. works by inertial impaction
IV. allows smaller particles to pass
A) I
B) I and II
C) I, II, and III
D) I, II, III, and IV
Q. 6 In a pneumatically powered small-volume nebulizer, fluid moves up the capillary tube because:
A) of gas flow that pushes it
B) of capillary action alone
C) of a pressure differential
D) none of the above
Q. 7 Most aerosol generators that are pneumatically powered operate using:
A) Bernoulli's theorem
B) Poiseuille's law
C) the venturi principle
D) choked flow and vorticity
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