Author Question: A patient is receiving supplemental oxygen via a 30 air-entrainment mask set at 8 L/min. The ... (Read 83 times)

xroflmao · **on:** Jul 16, 2018

A patient is receiving supplemental oxygen via a 30 air-entrainment mask set at 8 L/min. The respiratory therapist must increase the supplemental oxygen to 40. To maintain the same total output, the flow rate must be increased to _____ L/min.

a. 10 c. 16
b. 14 d. 18

Question 2

A home care patient calls to inform the respiratory therapist that his transtracheal catheter acci-dentally fell out last night and that he was unable to reinsert it. The patient should be told to:

a. insert a dilating or stenting device.
b. continue attempts to reinsert the catheter.
c. use a nasal cannula and call his physician as soon as possible.
d. use a nasal cannula until another transtra-cheal catheter is delivered to the home.

Missbam101 · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: D
The output for the 30 air-entrainment mask set at 8 L/min is 72 L/min, because 30 has nine total parts multiplied by 8 L/min, which equals 72 L/min. The total output for 40 should, therefore, be 72 L/min. There are four total parts in 40 multiplied by an unknown flow that equals 72 L/min. 4X = 72. X is equal to 18 L/min.

Answer to Question 2

ANS: D
Without the transtracheal catheter in place, this patient is not receiving any supplemental oxygen. To avoid hypoxemia, the patient must use a back-up delivery device. The most appropriate device in this situation would be a nasal cannula. The patient must call the physician for follow-up im-mediately.