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Dr. Charles Mok explains that severe sleep apnea is diagnosed when the apnea-hypopnea index exceeds 30 events per hour. Breathing pauses and oxygen drops happen repeatedly through the night, measured with home devices or in a sleep lab. It's the most serious form of sleep apnea.
Questions this video answers
An apnea–hypopnea index (AHI) of over 30 events per hour.
By either a home wearable device or in a sleep laboratory.










