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resmed vauto spontaneous cycle
#1
resmed vauto spontaneous cycle
the resmed vauto reports a percentage for spontaneous cycle.  if I recall correctly it's based on the last 15 or 20 breaths. oscar doesn't report this stat so there's no way I know to monitor it other than waking and looking.  on the few occasions I've noted it, it's usually around 90 or 92% but I've seen it as low as ~75%.

1. what does this metric tell us?  (I assume it's at least a loose indicator of central apnea?)

2. does anyone have an idea how to use this information?

3. does anyone know at what percentage one should pay attention to this stat and follow it up some how?

4. I'm curious what percentages all you other vauto users see...
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#2
RE: resmed vauto spontaneous cycle
Old thread. I think spontaneous cycle is the breaths you take within the minimum and maximum inspiration time (Ti Min and Ti Max) that can be configured in the Vauto model (and probably other models). If the time you take is outside these boundaries the breaths are not considered "spontaneously cycled" by you.

The presentation of some Resmed devices explains TiControl as to be used by patients with some lung pathologies and together with Vsync to keep synchronization in the presence of leaks.

My inspiration time falls within the default 0.?-2s range of the device, but sometimes when Im awake it is above 2s, I changed the Ti Max to 3s because its anoying when the device try to force a cycle when Im trying to calm down taking longer breaths. Now my breaths are almost 100% spontaneous and this is the same behaviour as an Autoset model. I did not found any use for this, I don't have any known lung problem and I almost don't have any leaks either.
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#3
RE: resmed vauto spontaneous cycle
thanks for your response; I was disappointed this topic fell through the cracks. I think your explanation is consistent with my guess that it's an indicator of tendency for central apnea but idk.

I too set my timax to 3 - because I felt my inhale was cut off too often. I haven't investigated very carefully but I believe I still get low % (like in the 70's and 80's) occasionally even though I don't think my inspiration time exceeds it in the stats. I'll be returning to vauto soon so I'll try to pay more attention to this.

anyone else have knowledge or an opinion about this?
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