Hush Sweet Charlotte
- Dec 25, 2018
Yes, this is where I got the information. On page 311 it reads:ADDITIONAL EDIT: This technical article discusses the issue of the debreather mask losing its seal as the people wearing it lost consciousness:
'At the start of the debreather protocol, a client may be able
to position the mask to prevent ventilation from outside, but once
unconscious the relaxation of facial muscles and slacking of the jaw
will compromise the seal. There are also issues for those who have
facial hair, or wear dentures. A leak as small as a 15-gauge needle
will alter substantially the gas composition inside a closed breathing
system (see Hamilton & Eastwood, 1955).'
This is the reason the method was abandoned in favour of the exit bag. I've no idea how small a 15 gauge needle is, but it sounds.. pretty small. I really hope they have solved the problem in this new version.