The functionality and safety of CPAP machines and equipment is the paramount concern of this forum and any input should be welcome even if it only helps us to better understand the risks and benefits as well as the concerns of other forum members.
It seems to me that the machine can never be truly safe in every circumstance, even for a competent user with a partner, let alone when dealing with patients who have the potential for such a diverse range of extenuating circumstances.
CPAPs, as portrayed in this forum, seem to exist in a twilight zone on the outer edges of independent, fit, and well, yet many CPAPs are still being used beyond that zone with patients who are seriously indisposed, or dysfunctional, or incompetent, hopefully with some oversight, perhaps maintained by occasional or part-time carers.
In the furthest zones patients are in institutions or hospitals, under full-time professional care, often with other devices monitoring their vital statistics.
It's unlikely that the CPAP can be totally safe and functional through all those zones and especially not in the transitional stages.
I wonder if the real solution might be to learn from health professionals and search for, or wait for, better personal monitoring systems and warning devices that are independent of the CPAP unit and its power supply.
Personal Health Monitoring
Maybe one day, in a far-off galaxy, CPAPs will come fully equipped with biosensors, alarms, control of all household appliances, and of course, the latest weather report.
The user manual for that CPAP will keep Sierra busy for quite a while. :)