10-03-2023, 11:56 AM
Discrepancy between Resmed Clinician report and OSCAR
New APAP user, curious to the thoughts of this forum:
Backround: My in-lab sleep study reported mild OA in the 5.5 AHI range (10 AHI when on my back). There was very little central apnea reported (< 1/hour). It was going to be months before sleep doctor would see me. My health is normal otherwise, but I've been extremely tired, so I bought an airsense machine of my own accord hoping I might get some relief. The CPAP store clinician set it up for me. He put it in autoset mode at 5-15 cm pressure, with EPR at 3.
I've been watching the results in OSCAR.
After a week, OAI is was under 1 consistently (often under 0.5), but CAI was between 1.5 - 3.5. The machine reported a 95th percentile of 6-7 pressure each night.
I started lowering the max pressure every few days, hoping it might lower CA events. I ended up at 5-7 cm pressure and the OAI is still well under 1, but CAI still 1.5 - 2.0 AH each night.
After 2 weeks he emailed me with the official resmed report, and suggested increasing max pressure to 10 (which he did set remotely). He said he thought this was advisable in order to bring down AHI. On his report from Resmed it shows these averages:
AHI 3.3
CAI 1.3
OAI 0.3
UAI 1.6
In my OSCAR report for past 30 days it shows:
AHI 1.9
CAI 1.45
OAI 0.34
UAI 0.08
I think I have one more day of data than his report, so that's why the CAI and OAI #s could be a bit off, but the UAI discrepancy is odd. My questions/request for comment:
1. Doesn't it seem odd that his report shows unclassified apneas at 1.6/hour, when mine shows effectively 0? FWIW, the only UA events I see in OSCAR were from one time I ran the machine to dry out my hose and mask, and even on that single day it was only a 0.6 UAI. The clinician believes my total AHI is 3.3 whereas OSCAR says that it's 1.9 (due to the UAI discrepancy).. Is it common to have discrepancies like this?
2. I don't understand why he would increase the max pressure when OA is already near 0. If anything I was wondering if I should try lowering the minimum pressure to 4cm and leaving the max at 7. My understanding is that more pressure will not help control CA events and could make them worse. Any thoughts on this?
FWIW, I'm not sure that the machine has relieved my tiredness so far, but I do feel like I'm sleeping more soundly at night, and waking up less, and my wife loves that I'm not snoring. I've been using it for 2 weeks, and still getting used to it, so want to keep going to see if my condition improves over time.
Backround: My in-lab sleep study reported mild OA in the 5.5 AHI range (10 AHI when on my back). There was very little central apnea reported (< 1/hour). It was going to be months before sleep doctor would see me. My health is normal otherwise, but I've been extremely tired, so I bought an airsense machine of my own accord hoping I might get some relief. The CPAP store clinician set it up for me. He put it in autoset mode at 5-15 cm pressure, with EPR at 3.
I've been watching the results in OSCAR.
After a week, OAI is was under 1 consistently (often under 0.5), but CAI was between 1.5 - 3.5. The machine reported a 95th percentile of 6-7 pressure each night.
I started lowering the max pressure every few days, hoping it might lower CA events. I ended up at 5-7 cm pressure and the OAI is still well under 1, but CAI still 1.5 - 2.0 AH each night.
After 2 weeks he emailed me with the official resmed report, and suggested increasing max pressure to 10 (which he did set remotely). He said he thought this was advisable in order to bring down AHI. On his report from Resmed it shows these averages:
AHI 3.3
CAI 1.3
OAI 0.3
UAI 1.6
In my OSCAR report for past 30 days it shows:
AHI 1.9
CAI 1.45
OAI 0.34
UAI 0.08
I think I have one more day of data than his report, so that's why the CAI and OAI #s could be a bit off, but the UAI discrepancy is odd. My questions/request for comment:
1. Doesn't it seem odd that his report shows unclassified apneas at 1.6/hour, when mine shows effectively 0? FWIW, the only UA events I see in OSCAR were from one time I ran the machine to dry out my hose and mask, and even on that single day it was only a 0.6 UAI. The clinician believes my total AHI is 3.3 whereas OSCAR says that it's 1.9 (due to the UAI discrepancy).. Is it common to have discrepancies like this?
2. I don't understand why he would increase the max pressure when OA is already near 0. If anything I was wondering if I should try lowering the minimum pressure to 4cm and leaving the max at 7. My understanding is that more pressure will not help control CA events and could make them worse. Any thoughts on this?
FWIW, I'm not sure that the machine has relieved my tiredness so far, but I do feel like I'm sleeping more soundly at night, and waking up less, and my wife loves that I'm not snoring. I've been using it for 2 weeks, and still getting used to it, so want to keep going to see if my condition improves over time.
