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Low AHI vs. low Flow Limitation
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RE: Low AHI vs. low Flow Limitation
02-20-2024, 08:51 AM
RE: Low AHI vs. low Flow Limitation
Flow limitation continues to be prominent in your results. It would probably take bilevel pressure to resolve. Results are slightly improved or comparable to your original results at fixed pressure 7, EPR 1, except tidal volume is improved. Inspiration ratio remains 1.23 to one, and we would ideally like to see between 0.5 and 1.0 to one. You have low AHI, so your pressure and settings may be optimized for CPAP. Without more information on what the source of the flow limitation might be, I'm at a loss for additional suggestions.
Sleeprider
Apnea Board Moderator www.ApneaBoard.com ____________________________________________ Download OSCAR Software Soft Cervical Collar Optimizing Therapy Organize your OSCAR Charts Attaching Files Mask Primer How To Deal With Equipment Supplier INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
04-22-2024, 06:15 AM
RE: Low AHI vs. low Flow Limitation
04-22-2024, 08:04 AM
RE: Low AHI vs. low Flow Limitation
Change trigger sensitivity to high or very high to reduce the centrals. No other changes needed.
Sleeprider
Apnea Board Moderator www.ApneaBoard.com ____________________________________________ Download OSCAR Software Soft Cervical Collar Optimizing Therapy Organize your OSCAR Charts Attaching Files Mask Primer How To Deal With Equipment Supplier INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
04-27-2024, 06:24 AM
RE: Low AHI vs. low Flow Limitation
Hi again...just to followup on your suggestion to increase trigger to very high...
Changes made: Trigger-very high TiMax-From 2.8-2.6 Lowered PS to 4.0 cannot figure out which change was most signifcant....It appears to me that the pressure settings are more like a fixed bilevel than auto..Is that correct? If these settings are ok...should I gradually begin to increase PS to reduce Flow limitations gradually .2 at a time? Thanx again for your valuable insights and suggestions
04-27-2024, 08:08 AM
RE: Low AHI vs. low Flow Limitation
Yes, if you want pressure to vary you will need to increase the max IPAP pressure. EPAP 8 plus 4.0 PS equals 12, so pressure is currently fixed. I think it would be fine to increase IPAP max to 14.0 and that might help with the remaining hypopnea. This looks a lot better.
Sleeprider
Apnea Board Moderator www.ApneaBoard.com ____________________________________________ Download OSCAR Software Soft Cervical Collar Optimizing Therapy Organize your OSCAR Charts Attaching Files Mask Primer How To Deal With Equipment Supplier INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT. |
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