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While performing gas calibration on pulmonary diagnostic equipment, which of the following devices should be calibrated with room air?

Which of the following are contraindications for continuous positive airway pressure (CPAP) therapy?I. hemodynamic instabilityII. hypoventilationIII. facial traumaIV. low intracranial pressures

Blood gas results from an apparently healthy patient reveal a pH 7.37, PaC02 15, Pa02 140.  The patient is breathing room air and displays not tachycardia, tachypnea or adventitious breath sounds.  Which of the following is an appropriate conclusion to draw on the basis of this information?

Which of the following settings should be adjusted to change the I:E ratio for a patient receiving PEP therapy?

Which of the following factors will decrease the FIO2 delivered by a low-flow O2 system?I. short inspiratory timeII. fast rate of breathingIII. lower O2 inputIV. large minute ventilation

All of the following reduce the risk of nosocomial infection when using heated humidification systems except:

Which of the following types of humidifiers are used in clinical practice?1. heat-moisture exchanger2. passover humidifier3. bubble humidifier

Medications that break the disulfide bond and increase mucociliary or cough efficiency are:

What condition exists based on the FV Loop on the PFT?

For which of the following patients might you recommend bland aerosol therapy administration?1. patient with upper airway edema2. patient with a bypassed upper airway3. patient who must provide a sputum specimen