Supplemental oxygen without the use of a CPAP, a BVM, or any type of assisted ventilation device will usually be indicated for every who is breathing with adequate tidal volume. It does not matter whether the quality of their breathing just as long as the volume is there and they are breathing on their own. All other situations marked with semi- or unconscious persons who have slow/shallow, rapid/deep, rapid/shallow, or aren't breathing at all show be on an assisted ventilation device.