While monitoring a patient receiving +12 cm H2O flow-mask continuous positive airway pres-sure, you note that the pressure drops to +6 cm H2O during inspiration, but returns to +12 cm H2O during exhalation
Which of the following would likely correct this problem?
a. Check and correct any mask leaks.
b. Check and correct any outflow obstruc-tion.
c. Increase the system flow.
d. Increase the system pressure.
ANS: C
Flow is adequate when the system pressure drops no more than 1 to 2 cm H2O during inspiration.
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