Mixed Sleep Apnea, or Mixed Apnea (MSA) is a hybrid of an
Obstructive Apnea, and a Central Apnea. These typically start out as
Central Apneas where all respiratory channels are flat. Then the Chest
and Abdominal belts start moving making it look like an Obstructive
Apnea. So this starts out like the patient isn't even trying to breath,
then when they do try to breathe, the airway is blocked.
Eventually the blood oxygen level (SpO2) drops, heart rate spikes, and
the patient will wake gasping for air often with a snore or a snort. Often
the awakening isn't remembered and they go right back to sleep only
to repeat this cycle throughout the night. This can be successfully
treated with CPAP.