• Test CO
in end tidal breath after holding breath for 20 seconds
(healthy
non-smokers are 0-2 ppm; chronic diseased are 5-10ppm).
• Test ABG & VBG at same elbow to see if
PaO2-PvO2<55mmHg
• Monitor indoor CO levels with a digital
detector near combustion appliances, especially unvented ones like gas ovens and gas
logs.
• Monitor CO levels inside homes with attached
garages after vehicles are started with the door open, driven out & the
door closed.
• Monitor CO levels in motor vehicles while
driving and parked idling.
• Look for asymmetrically drooping
eye and mouth that mark
The
Tell Tale Face of CO Poisoning and ask about multi-sensory sensitivity to lights,
odors, noises, tastes, touch and heat or cold.