YH-600B Pro User Manual V3.0
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The AI means the number of apneas per hour,
which is equal to the number of times apnea
has occurred the whole night divided by the
sleep time of whole night (awakening and
invalid time are not contained). The unit of
time is hour.
The HI means the number of hypopneas per
hour, which is equal to the number of times
hypopnea has occurred the whole night
divided by the sleep time of whole night
(awakening and invalid time are not
contained). The unit of time is hour.
The AHI means the number of apneas and
hypopneas per hour which is equal to the total
times of apneas and hypopneas during the
whole night divided by the sleep time of whole
night (awakening and invalid time are not
contained), and the unit of time is hour.
The SNI means the average number of times
the snore has occurred every hour which is
equal to the number of times snore has
occurred the whole night divided by the sleep
time of whole night (awakening and invalid
time are not contained). The unit of time is
hour.
The ODI means the number of times when the
oxyhemoglobin saturation reduction is more
than 3% or 4% every hour.
The CPAP means feeding continuous positive
airflow into air passage by face mask.
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