Which of the following is a common mixture for helium/oxygen therapy?

When instructing a patient to use an incentive spirometer, you should tell the patientI. “Put the mouthpiece in your mouth and inhale as quickly as possible until your lungs are full.”II. “Put the mouthpiece in your mouth and inhale slowly until your lungs are full.”III. “When your lungs are full, briefly hold your breath.”IV. “Put the mouthpiece into your mouth and blow hard.”

Given the following, calculate the humidity deficit.Absolute humidity = 32 mg/L

You are about to transport a patient from computerized tomography (CT) to the intensive care unit who is being bagged with a bag-mask. You set the liter flow at 15 Lmin. The cylinder reads 1,000 psi. How long do you have before the cylinder is empty?

Which of the following best describes how to determine relative humidity?

Upon inspection you see the letter and number combination of 3AL stamped into an oxygen cylinder’s shoulder. This means:

A heat and moisture exchanger (HME):

A nasal cannula running at 4 L/min delivers approximately what FIO2?

Dry powder inhalers (DPIs):

Which of the following aerosol delivery devices is intended to be used without an artificial airway?I. Briggs adapter (T-piece)II. face tentIII. trach maskIV. aerosol mask