Doctors Answers (4)
This question needs to be directed to you father's primary care doctor/sleep medicine doctor. I'm a dentist who makes oral appliances in the treatment of obstructive sleep apnea.
If your father had a CPAP ordered after a sleep study and no longer has the CPAP but wishes to try it again, I think he should not have to undergo another sleep study. My suggestion is that he be placed on an auto titrating CPAP rather than a fixed pressure of 11 cm H2O.
It depends on how old his study was if he'd need another sleep study. Once you are qualified for CPAP, you remain qualified. His pressure needs at that time might not be the same now depending on how long ago the study was. An auto CPAP may be an option for him. He should follow up with his sleep medicine physician who would be able to prescribe a CPAP for him again.
Possibly. The amount of time from his last test would be a determining factor. The most important thing is thorough follow up with your sleep physician to help make certain the settings are correct.