After fitting a home care patient with a CPAP nasal mask, you set the prescribed pressure and turn on the flow generator. At this point, the mask pressure reading is 0 cm H2O. What is the most likely cause of this problem?
a. Patient asynchrony
b. Too high a flow
c. Jammed CPAP valve
d. Large system leak
ANS: D
Methods used to overcome excessive drying include in-line humidifiers, room vaporizers, heat and moisture exchangers, chin straps (to decrease loss of upper airway moisture), and saline nasal sprays.
Health Professions
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