A respiratory therapist is checking a jet nubulizer with an entrainment setting of 35%. A properly calibrated oxygen analyzer measures the concentration at 45%. Which of the following best explains this finding?

A physician requests that you provide a patient with exactly 45% O2 at a flow of 60 L/min. Lacking a blender, you must manually mix air and O2 to achieve the desired mixture at the prescribed flow. Which of the following air and O2 flows would you select?Air (L/min) O2 (L/min)

Which of the following organisms has been associated with health care–associated infections in patients using a poorly disinfected bronchoscope?

A patient is receiving mechanical ventilation with a PEEP of 10 cmH20 and requires a MRI scan.  Before transporting the patient, the therapist should obtain a:

Is the function continuous at x = –3?

Finals are due Tuesday, May 7th.

Which of the following situations is a contraindication for incentive spirometry?I. a patient whose vital capacity is less than 10 ml/kgII. a patient who cannot cooperate or follow instructionsIII. an unconscious patient

Which of the following Gram stain results suggests the most legitimate sputum sample in a patient with pneumonia?

The sweat chloride level is used to diagnose which of the following disorders?

A particle’s position for t ≥ 0 is given by