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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:

Which of the following is false about cuff inflation techniques (MOV = minimal occluding volume; MLT = minimal leak technique)?

For what should sputum collected by aerosol therapy induction be inspected?1. color2. volume3. odor4. consistency

What factors can hinder effective coughing?I. artificial airwaysII. neuromuscular diseaseIII. systemic dehydrationIV. pain or fear of painV. use of expectorants

You are using a pneumatically powered mechanical percussor on a patient receiving CPT. The unit is powered by an E-cylinder of O2 because piped-in gas is unavailable. After a few minutes of operation, you notice that the percussor begins to slow down and then stops. What should you do?

BONUS: Zileuton belongs to which of the following categories?

In which of the following patients would you consider modifying any head-down positions used for postural drainage?I. a patient with unstable blood pressureII. a patient with a cerebrovascular disorderIII. a patient with systemic hypertensionIV. a patient with orthopnea

Indications for warming inspired gases include which of the following:

You are an RT in a large metropolitan hospital assigned to the MICU and are caring for a patient that is being mechanically ventilated via VC-AC. During second rounds, a nurse calls you to the bedside of the mechanically ventilated patient where you observe a sudden drop in the peak inspiratory pressure. Which of the following may explain this change? I. A defective exhalation valve II. a defective ETT III. high tidal volume setting IV.  frequent patient coughing

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?