Which criteria related to measurements of PETCO2 are used to determine sleep-disordered breath-ing in children?
a. PETCO2 values of >8 mm Hg above base-line
b. PETCO2 values of >12 mm Hg above base-line
c. PETCO2 values of >40 mm Hg for at least 25% of total sleep time
d. PETCO2 values of >45 mm Hg for at least 60% of total sleep time
ANS: D
For children, it has been suggested that PETCO2 values of greater than 45 mm Hg for at least 60% of the total sleep time or PETCO2 values greater than 13 mm Hg above baseline values indicate sleep-disordered breathing.
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