50 %
oxygen, 50%
nitrous oxide (
laughing gas).
This is a gas analgesic used extensively in
Mountain
Rescue. Five whiffs of this baby and you will be laughing all the way home on the
stretcher.
Good for treating limb injuries. Must never be used
in head or chest injuries as it can mask symptoms (sp ??)
of dangerous conditions such as heavy concussion
or swelling of the brain.