You can hook a constant flow O2 hose onto a barrier mask and give oxygenated rescue breaths. That is recommended in dry land if you have Oxygen.
If there is no Oxygen handy, Nitrox can be given through a regulator if the person is breathing on their own.
This will help a shocky person or someone suspected of having DCS.
If there is no Oxygen handy, Nitrox can be given through a regulator if the person is breathing on their own.
This will help a shocky person or someone suspected of having DCS.