Author Question: A patient with chronic bronchitis comes to your emergency department; she is discovered to have a ... (Read 59 times)

haleyc112 · **on:** Jul 16, 2018

A patient with chronic bronchitis comes to your emergency department; she is discovered to have a pulse oximetry oxygen saturation (SpO2) of 78 with room air. On the basis of these data, which oxygen-delivery device would you use with the patient?

a. 6-L nasal cannula c. Simple mask
b. Transtracheal cath-eter d. Venturi mask

Question 2

If the air-entrainment port on a Venturi mask is occluded, which of the following will happen? 1. A decrease in flow 2. A decrease in FIO2 3. An increase in flow 4. An increase in FIO2

a. 1 and 2 c. 1 and 4
b. 1 and 3 d. None of the choices

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

Answer to Question 1

ANS: D
A patient with chronic obstructive pulmonary disease requires a precise FIO2 because of carbon dioxide (CO2) retention issues. The only precise FIO2 device is a Venturi mask, which is consid-ered a high-flow device.

Answer to Question 2

ANS: C
Partial obstruction of oxygen flow downstream of the jet orifice or partial obstruction of the en-trainment ports will decrease the amount of room air entrained, thus raising the FIO2 of the deliv-ered gas.