Knowing this I made sure to check in the Clinical Menu on the machine that the DME representative ordered for me, before accepting my new device, to be sure it had never been used. I've read on this Board that some folks have learned "after the fact" that their machine was a "previously used" one.
This Apnea Board has been a great education for me in preparation for getting my new Cpap and I am very grateful for what I have learned... AND am looking forward to learning more/ as I follow this site. Hopefully I will be able to share some "gems" in return.