(06-15-2014, 12:28 PM)Visitor Wrote: Hopefully this will give better info to provide feedback on.
I would suggest you consider continuing to raise the minimum (6) slowly (1 or 2 cm H2O per week or slower), and watch the AHI, to see whether AHI gets better or worse.
The table you posted a picture of shows that your machine is being limited by its max pressure setting (12) for some portion of the night a little more often than about every second night
So, you could also consider raising the maximum (12) very slowly (0.5 or 1 cm H2O per week or more slowly). But I suggest not changing two things at once. Change Min Pressure or change Max Pressure, not both in the same week.
Raising the minimum pressure (6) is considered mostly a comfort thing which has little risk of increasing the AHI, and could improve AHI, especially when the mean (average) pressure is more than 1 or 2 cm H2O higher than the minimum pressure.
But raising the maximum pressure (12) can cause central apneas (in a small minority of patients), so proceed more cautiously when raising the maximum, in consultation with your doctor if feasible.
If you had overnight sleep studies, it would be very good to ask for full copies (with full data and everything) for your own records, and to look over the data to see how many central apneas were observed, especially when being treated with CPAP.
Unless your machine can detect the difference between obstructive apneas versus central apneas, you might not be able to tell the difference, even when looking carefully over the waveform data the machine gathers. But at least one type of central apnea (Cheyne-Stokes Respiration) can be easily spotted by looking closely at the Flow waveform.
By the way, "Flow" refers to the rate of airflow in our airway (the portion actually inhaled or exhaled), not the total airflow in the hose.
Also, does your machine offer exhale pressure relief? If yes, do you know whether it is like EPR on ResMed machines, which is like bi-level treatment, or like Flex on Philips Respironics machines, which is based on Flow (goes away when we stop exhaling and there is no Flow)? The ResMed kind of exhale pressure relief is associated with higher risk of inducing central apneas (in the small minority of patients who are susceptible to having central apneas).