Question: A 42 year old obese male is referred for excessive daytime sleepiness and possible obstructive sleep apnea. Polysomnogram reveals AHI of 4 but multiple RERAs. What defines a RERA?
a) Reduction in airflow by 30%
b) Sequence of breaths over at least 10 seconds with increasing effort that leads to arousal
c) Arousal caused by cessation of airflow
d) Reduction of airflow by at least 30% with a 4% or greater oxyhemoglobin desaturation
[Answer will be posted with next week's new question]
Answer to last week's question, "Old Dog, New Tricks?" (February 4, 2019)
A - no difference in speech perception outcomes.