What medical test you have to do to know if your brain is receiving an adequate blood or oxygen?
Pulse oximetry? Monitored by a little device that is clamped on the tip of your finger.
Arterial gas count? A VERY painful blood draw from an artery instead of a vein.
Pulse oximetry? Monitored by a little device that is clamped on the tip of your finger.
Arterial gas count? A VERY painful blood draw from an artery instead of a vein.
References :
Basic orientation questions in the absence of trauma or medications would give you enough information. Not enough oxygen/blood to the brain = unconsciousness.
References :
Are you conscious? That is the best test. A little drop in the pO2 causes confusion, agitation. A bigger drop , loss of consciousness. Altitude chamber rides demonstrate this with a "time of useful consciousness" drill. It gives Flight Crew an idea of the time they have to get on Oxygen when they lose pressurization. I have been through many rides. The most common exercise is "Write your Name and Address three times" Never saw anyone write all 3.
References :
Former Flight Surgeon