You connect an intubated patient to an air-entrainment nebulizer system through a T tube set at 60% with an input flow of 15 L/min. Toward the middle of inspiration, you observe that mist stops exiting from the open end of the T tube
What does this indicate?
a. Flow is adequate to meet patient needs.
b. Patient has a low inspiratory flow rate.
c. Flowmeter must be calibrated.
d. Patient is not receiving 60% O2.
ANS: D
As long as mist can be seen escaping throughout inspiration, flow is adequate to meet the pa-tient's needs, and the delivered FiO2 is ensured.
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