If a patient is on a 6L nasal cannula, what is the approximate FIO2?

The QRS wave on the EKG indicates which of the following:

The indexing system that applies to medical gas cylinders size E and smaller is known as which system?

Low-flow O2 delivery systems used in respiratory care include all of the following except:

What is the usual method of monitoring the remaining contents in a liquid-filled cylinder?

A respiratory therapist is monitoring a patient with tracheostmy. The patient is recieving oxygen at an FIO2 of .40 by T-piece with a flowmeter setting of 8 L/min. No mist is visible during inspiration. Which of the following should the therapist do?

A physician orders a 70% He:30% O2 mixture to reduce the work of breathing in a patient having an acute asthmatic attack. Which of the following delivery systems would be appropriate in this case?

Which of the following statements is false about low-flow O2 delivery systems?

A patient with a peak inspiratory flow of 50 L/min is to receive 28% oxygen via venturi mask. What is the minimum oxygen flow required?

A patient is currently on oxygen therapy using a venturi mask at 35% running at 8 LPM. What is the total flow that is being delivered to the patient?