A nonrebreathing mask has been replaced by a high-flow nasal cannula humidifier set at 15 L/min. The benefit of this device to a patient is that it:
a. decreases airway resistance.
b. delivers medication to the airways.
c. prevents an increased humidity deficit.
d. dilutes thick secretions for easy removal.
ANS: C
The high-flow nasal cannula humidifier will prevent an increase in humidity deficit because it us-es a special bubble humidifier that can accommodate the rapid flow rates and still humidify the gas.
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Presbyopia is
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You arrive at a nursing facility for a "respiratory distress" call. The frantic nurse says that a patient cannot breathe. You find a 72-year-old woman who has a feeding tube visible from her mouth. She cannot speak and is having trouble breathing. Your partner asks how long the tube has been in place, and the nurse says it was just placed by the visiting doctor about 10 minutes ago. The doctor
has left the building. What is your best course of action? A) Place the patient on a nonrebreather mask and prepare to transport. B) Have the patient cough to dislodge the tube. C) Intubate the patient with the tube in place. D) Gently remove the tube and assess lung sounds.
Racemic epinephrine comes in what percent solution?
a. 0.05% b. 1.25% c. 2.25% d. 5.0%
CPR plus automated external defibrillation (AED) can boost survival significantly if it is begun within how many minutes of collapse?
a. 1–2 minutes b. 5–10 minutes c. 35 minutes d. 3–5 minutes