What are the criteria to define hypopnea?
a. 20% decrease in airflow and 4% oxygen desaturation
b. 20% decrease in airflow and 2% oxygen desaturation
c. 30% decrease in airflow and 4% oxygen desaturation
d. 30% decrease in airflow and 2% oxygen desaturation
ANS: C
Hypopnea is defined as a 30% decrease in airflow in conjunction with 4% oxygen desaturation.
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