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First, normal respiration is longer expiratory time than inspiratory time, so you don't have a problem. Long inspiratory times are associated with airway resistance and flow limitation which makes taking in a breath harder and longer. We know that increasing pressure support (EPR) can help with flow limitation and shorten inspiratory time, however you are at the limits of your EPR at 3. Your flow rate chart shows evidence of minor flow limitation with some intermittent soft tissue collapse near the peak flow. The only tool you have remaining is increased minimum pressure, unless you move to the Vauto which can increase pressure support. In any event, your results look pretty good. Be assured your respiration cycle times are normal.
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.
Machine: air sense 10 for her Mask Type: Full face mask Mask Make & Model: Airfit 20 Humidifier: attached to the airsense CPAP Pressure: 6 - 10 CPAP Software: OSCAR
Got my hands on an ASV for EXTREMELY cheap so I thought why not give it a shot? Was on an Air Sense for Her previously and while my numbers were good I still felt tired and not with it. I've heard Dr. Krakow said ASV can help people better than a regular CPAP so decided to give it a try.
Last night was my first night and I've attached my results. While my ahi looks fantastic, I kept waking up through the night. I think my humidity was low. What really has me worried is how low my respiratory rate got down to. It says it was at 6 breaths a minute at one point! Yikes!
Should I not give the ASV another shot? Do my settings seem fine? When I zoomed in I noticed when I was actually sleeping well my flow rate seemed less limited so that's good? My I:E ratio is much better too and my Tidal Volume is bigger?
Machine: air sense 10 for her Mask Type: Full face mask Mask Make & Model: Airfit 20 Humidifier: attached to the airsense CPAP Pressure: 6 - 10 CPAP Software: OSCAR
The area of concern I would have with that low of a respiration, is oxygen desaturation. You might wish to consider obtaining a recording oximeter. Something like the CMS-50F or a Wellue device. Both are OSCAR compatible.
I should mention that if you decide to purchase one, search for discount coupons first.
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.
Machine: air sense 10 for her Mask Type: Full face mask Mask Make & Model: Airfit 20 Humidifier: attached to the airsense CPAP Pressure: 6 - 10 CPAP Software: OSCAR
Machine: air sense 10 for her Mask Type: Full face mask Mask Make & Model: Airfit 20 Humidifier: attached to the airsense CPAP Pressure: 6 - 10 CPAP Software: OSCAR
Not uncommon IMHO
look at the detailed chart that starts at 422
You see each breath drawing a large volume with a breathing rate of 6. On the right of the page you see a faster breathing rate and a lesser volume for each breath. All this time the algorithm is keeping the minute vent constant as it should.
ASV works by raising PS which can aggravate aerophagia.
Gideon - Project Manager and Lead Tester for OSCAR - Open Source CPAP Analysis Reporter
Machine: air sense 10 for her Mask Type: Full face mask Mask Make & Model: Airfit 20 Humidifier: attached to the airsense CPAP Pressure: 6 - 10 CPAP Software: OSCAR
So everything looks normal? Should I give ASV a go again? Do you think it can help with UARS?
I really just got a crazy deal on this machine (200 dollars CANADIAN, brand new!) so I thought I'd try it out to see if it would help. I do know that Krakow's theory's are outside of what regular sleep doctors think though...