I'm being investigated for central sleep apnea as I have significant respiratory muscle weakness (around 50% below normal). When falling asleep, I regularly stop breathing for around/over ten seconds at a time - as though my brain hasn't told my diaphragm to move. I regularly awake to take full, deep breaths as I feel somewhat suffocated, yet my oxygen doesn't seem to drop very much at all - up to only 3%.
Is it possible to have CSA without a significant drop in oxygen?
Every time apneas occur, you are awakening and taking voluntary breaths, this could compensate for the oxygenation. But this could lead to disturbed sleep. And it depends on the number of apneas occurring and the duration of each apnea. This can only be documented by a sleep study and the study will help to quantify the apneas.
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