The recommendation seems to be to use supplemental oxygen before using an NIV. Is this correct?
In which case, an oxygen concentrator might also be useful and could be used before. And, later with a Bipap/cpap if not sufficient by itself?
Due to being unfamiliar with cpap usage, it seems that it would be best to consult an intensivist before using one.
But, I might want to get one in case one's not available when needed, while hoping that it does not deprive someone else in greater need.
Supplemental oxygen could be used by oneself at home, at low/minimal rates < 5lt/min. And, there is lesser chance of there being a shortage of oxygen tanks, concentrators, so I wouldn't feel like I was depriving someone else.
Thoughts?
On exhale aerosol contamination:
About HEPA filters, they seem to do a good job even for particles of the size of virus and smaller:
smartairfilters(dot)com/en/blog/can-air-purifiers-filter-out-the-coronavirus/
There are also some room purifiers with HEPA filters and UV lamps, but I'm not sure how effective they are.
Secondly, I came across these things called CPAP helmet masks. They reminded me of the bubble helmets used in Italy.
I wonder if they can help channel the exhaled air better, although I'm not sure if they will do the pressure maintaining job as well.
They also look a lot more complicated.
And, is this device similar to the lung flute/acapella devices
Threshold PEP, Positive expiratory pressure device:
http://www.usa.philips.com/healthcare/pr...ure-device