My previous sleep study showed the most appropriate pressure was 14/10 and titrated to 16/12. So why on earth is it lower now?
Maybe due to me wearing my dental appliance?
Here is what they told me:
1. I slept for 5 hours with 1 OA, at pressure of EPAP 5, IPAP 9, PS 4, and that pressure seemed most appropriate for me.
2. My oxygen level at that pressure was around 91% at the lowest.
3. They are lowering my settings, and told me it could be my fault that by increasing my own settings, I am causing more OA's to happen.
4. They said that all BIPAP/BI-LEVEL machines should usually have PS4, and that me using a PS3 could be causing more issues. They claimed there was no reason to use PS 3 or lower, at least for me. They did say that people with COPD though or breathing issues could use PS 5 or PS 6.
5. They are lowering my settings to start at EPAP 4, IPAP 8, PS 4.
6. They claim I am not at my PRESCRIPTION settings, and this is causing the issue.
7. They said even though I slept 5 hours, they only really need 2 hours to make and adjust settings and determine optimal pressures.
8. I mentioned about maybe tucking my neck and positional may be causing apnea's, but they had no answer for that.
I don't see how LOWERING my pressure, and increasing PS to 4, will help me? I have never heard of decreasing pressure, and increasing PS to help with OA's. As you can see from this particular night back on Oct 9th, I had a lot of OA's in a row. My machine was pegged at IPAP Max 15. This particular night my heart went into ventricular bigeminy(double beats) and I called 911 due to feeling like I was going to pass out. Almost every week, I have at least one night where I have run's of OA's like this. Other nights are okay and my AHI < 2 usually.
When I had lower settings of PS 4 in the past, that caused me to have more CA's. Plus it felt like the pressure got too low when breathing out. Having starting EPAP 4, also seems low and like I can't get enough air. The tech said just to breathe deeper. The issue with lower pressures in the past, was that my oxygen levels would dip to the low 80's, same as what happens when I have OA's.
They told me to try these settings for two weeks. If I start sleeping bad again tonight, or my oxygen level dips low, I'm not sure what to do.
Pressure EPAP min 4.4, IPAP 8.4, IPAP Max 18, PS 4.