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Red line on the pressure graph
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09-08-2022, 04:41 PM
Red line on the pressure graph
09-08-2022, 05:20 PM
RE: Red line on the pressure graph
Your inhale and exhale pressures are the same (not using EPR), so the values match.
The graph interpreted them a hair differently in that spot. Thats my guess anyhow.
09-08-2022, 05:28 PM
RE: Red line on the pressure graph
You have EPR turned off, so the EPAP and IPAP have the same value - except for that brief time when the calculations don't round to exactly the same value - so both the green and red lines show up almost on top of each other.
My browser gave me a magnifying glass for a cursor, so I clicked and both lines showed up clearly I suppose it is arguable whether the pressures were different or the just the settings a bit off.
Apnea Board Monitors are members who help oversee the smooth functioning of the Board. They are also members of the Advisory Committee which helps shape Apnea Board's rules & policies. Membership in the Advisory Members group does not imply medical expertise or qualification for advising Sleep Apnea patients concerning their treatment.
09-08-2022, 06:16 PM
RE: Red line on the pressure graph
(09-08-2022, 05:28 PM)pholynyk Wrote: You have EPR turned off, so the EPAP and IPAP have the same value - except for that brief time when the calculations don't round to exactly the same value - so both the green and red lines show up almost on top of each other.So, are you saying that there is a ”glitch” or a bug in the OSCAR software?
09-08-2022, 06:19 PM
RE: Red line on the pressure graph
(09-08-2022, 06:16 PM)Greywolfe Wrote: So, are you saying that there is a ”glitch” or a bug in the OSCAR software? It's an undocumented feature!
Jeff8356
MacBook Air (2017, Intel) | macOS Monterey (12.7) | OSCAR v1.5.1 | VM = Win10/Win11 | How to Links: Installing OSCAR on a Mac Organizing your OSCAR charts Attaching screenshots and files for the forum OSCAR Help OSCAR - The Guide 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.
RE: Red line on the pressure graph
(09-08-2022, 05:28 PM)pholynyk Wrote: You have EPR turned off, so the EPAP and IPAP have the same value - except for that brief time when the calculations don't round to exactly the same value - so both the green and red lines show up almost on top of each other. Exactly what do hyou mean by an "undocumented feature?"
09-08-2022, 06:29 PM
RE: Red line on the pressure graph
That's nerd talk for an unexpected result (i.e. a Bug!).
Crimson Nape
Apnea Board Moderator www.ApneaBoard.com ___________________________________ Useful Links -or- When All Else Fails: The Guide to Understanding OSCAR OSCAR Chart Organization Attaching Images and Files on Apnea Board Apnea Helpful Tips 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.
09-08-2022, 06:37 PM
RE: Red line on the pressure graph
09-08-2022, 06:44 PM
RE: Red line on the pressure graph
What you describe is not so much of an OSCAR bug, but an issue with the data and the computer's operating system. The graphs are normally drawn in memory before displaying them, so you don't see this. Each line is drawn separately, and the first line may be overwritten by the second one in certain areas.
Crimson Nape
Apnea Board Moderator www.ApneaBoard.com ___________________________________ Useful Links -or- When All Else Fails: The Guide to Understanding OSCAR OSCAR Chart Organization Attaching Images and Files on Apnea Board Apnea Helpful Tips 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.
09-08-2022, 07:17 PM
RE: Red line on the pressure graph
>>>or the just the settings a bit off.
>>>>or just the settings a bit off.the This graph is displaying the 'set value' calculated by the machine for the two variables. They are stored as 16 bit values in the SD card files. A difference of one low order bit could be the difference in the two lines.
Apnea Board Monitors are members who help oversee the smooth functioning of the Board. They are also members of the Advisory Committee which helps shape Apnea Board's rules & policies. Membership in the Advisory Members group does not imply medical expertise or qualification for advising Sleep Apnea patients concerning their treatment.
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