SleepyChief

The SD card in the ResMed machine has a great deal of nightly data written to it. If you view the data with software like Sleepyhead you can indeed see the various different events, such as obstructive apnea, or "clear airway" apnea (otherwise known as Central Apnea, as the airway remains open, but the person stops breathing for 10 seconds or more). On my results I was about 50/50 between the two, but once the obstructive apnea was dealt with, my total events dropped to an acceptable level. If the Central Apnea frequency gets worse, however, I will be checking back with my specialist. It's a good reason to review your own data if your are so inclined. Otherwise, just keep aware of how rested you feel on the whole. I'm not sure if the transmitted cell data is as comprehensive as the SD card records.