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I switched to a nasal pillow mask (ResMed P10) from a nasal mask (ResMed N20). I have some facial hair and why I ever wound up with the N20 I don't know. Once I realized that mouth leakage was actually the larger problem, I started experimenting with a soft cervical collar.
In this chart from last night, somewhere, I think, about 6:00 I took off the cervical collar because I woke up but I couldn't get back to sleep. I thought it made for an interesting chart.
I have no idea about the backup rate. I haven't poked into the clinical menu but now's as good a time as any. The pressure was sleep lab recommendation and the PA I visited said "looked good." Of course, I think he was hoping to leave early that day.
11-28-2023, 06:49 PM (This post was last modified: 11-28-2023, 06:51 PM by PeaceLoveAndPizza.)
RE: Think I'm getting a handle on this. Or am I?
According to the clinical manual for the ST (is there a difference between the ST and ST-A?) the backup rate is on the clinical setup screen below IPAP and EPAP. It should be listed as iBR (Intelligent Backup Rate on/off) and Backup rate expressed as cmH2O. Below that there are a number of important parameters e.g. resp rate, backup rate, etc.
I am still learning about ST and ASV devices, so I will quote SleepRider describing how the ASV works with backup rate:
Backup rate The AirCurve 10 ASV device uses breath phase mapping to provide a timed backup rate that is synchronized with the patient’s own breathing. When the patient deviates from the ventilatory target, the ASV device aims to stabilize the patient by adjusting Pressure Support. If necessary, it will adjust the timed backup rate from one that matches the patient’s own recent rate towards the built-in default 15 BPM backup rate.
FWIW within ResMed, ST (Spontaneous - Timed) is the stupid version of a ventilator mode. ST-A is smarter one, included is iVAPS (ResMed's take on AVAPS), which is not on the ST.
INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEBSITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
I can’t comment on the settings due to lack of familiarity on the machine, but the one thing that stands out to me is the way things went off the trolley when you took off the cervical collar. It looked like a good night until about 07:15 when the hypopnoea’s and leaks show up with regularity.
Plenty of comfortable collars to choose from out there ranging from soft to very firm, and various lengths and heights. It takes a bit of time to adjust once you have found one that works for you.
