What is the goal of using an unheated bubble humidifier with oronasal oxygen delivery systems?

Which of the following alternatives may increase the FIO2 capabilities of air-entrainment nebulizers?I. Add open reservoir to expiratory side of T-tube.II. Connect together two or more nebulizers.III. Use a commercial dual-flow system.IV. Add open reservoir to inspiratory side of T-tube.

Inhalation of dry gases can do which of the following?I. decrease viscosity of secretionsII. mucociliary impairmentIII. increase airway irritability

A respiratory therapist observes that the peak inspiratory pressure of an intubated patient has increased from 24 – 35 cmH2O, exhibits wheezes bilaterally and the pressure limit alarm is intermittently activating. The therapist notes the Pplat and PEEP have not changed. The therapist should:

A 52-year-old man is admitted to the hospital emergency department with a primary complaint of severe radiating chest pain and signs of central cyanosis. The attending asks for your advice on selecting a device that provides a moderate FIO2 for this patient. Which of the following would you recommend?

Ipratropium bromide (Atrovent) is indicated for maintenance treatment of the following diseases, except:

Gas leaving an unheated humidifier at 10° C (50 F) and 100% relative humidity (absolute humidity = 9.4 mg/L) would provide what relative humidity at body temperature?

Which of the following are necessary features to look for in selecting a heated humidifier?1. water level readily visible2. over-temperature protection3. auditory and visual alarms4. minimal temperature overshoot

A surgical resident has asked that you assist in an elective tracheotomy procedure on an orally intubated patient. Which of the following would be an appropriate action?

When a patient’s chart is reviewed, it is important to look for contraindications to CPT. They would include all of the following EXCEPT: