Periodic breathing

My CPAP gives periodic breathing number of either 1% or 0% most of the time. Last night I got a 4% reading. I guess my question is what is a bad reading? Is there a scale for it?

If by ‘periodic breathing’ you mean percent of apneas, then 5% or less is o.k.

There is, however, something known as periodic breathing; it’s technically called Cheyne-Stokes respiration, and is characterized by a waxing and waning breathing pattern. I’ve never known that to be interpreted as a percentage, though.

So if its over 5 does there need to be an adjustment of the machine?

If you’re concerned about it, consult your doctor.