(11-16-2023, 09:49 AM)Sleeprider Wrote: The video did not stay on you during the period ahead of the recovery breath. I heard a respiratory "squeaking" that sounds obstructive, and a recovery breath. You do appear to have a corner of your pillow between the shoulder and jaw, which is a good technique to avoid chin-tucking.

(11-16-2023, 02:53 PM)Sleeprider Wrote: When posting charts with ASV it is helpful to show the mask pressure chart below the flow rate. The last chart starting at 01:39 is normal respiration with a breath-rate of 17 breaths per minute (bpm) and appears to be unassisted by pressure support.  IPAP and EPAP are both near the minimum settings. In the second graph, at 06:12 all three UA events are preceeded by a inspiration and no expiration. We see a inspiration peak and flow goes to zero. The absence of expiration seems common in several shorter unflagged events in this chart.  Your pressure rises to near 25/12 during this event, so there is plenty of pressure support to resolve any central issues and EPAP pressure should have resolved most obstruction except positional.  The first chart at 02:29 starts with somewhat chaotic respiration volume and rate and turns into the inspiration breath-holds. I think where problems are apparent in these charts, they mostly look positional/obstructive to me.