Blood Oxygen level question.

Udo,

I found the following helpful when looking for answers and solutions.

http://www.aeromedix.com/aeromedix/a...eox/index.html

Mike

On Jan 26, 10:09 am, "Udo" wrote:
How long does it take for the blood oxygen level to normalize at 15000
ft, after one discovers the flow meter was not adjusted correctly?
Also at what altitude does Oxygen become beneficial, assuming an
average person? Are there any factors, other then altitude it self,
that can lower Blood oxygen level during flight assuming supplemental
oxygen is not used between 5000 and 10000 ft and the pilot has a normal
cardio vascular health? What oxygen level is considered optimum at sea
level and 10000ft to 15000ft?
Udo

I am also looking for the following information:

Oxygen consumption in function of altitude, age of pilot.

The objective is to determine when I have to go down when I see a
specific oxygen pressure in my bottle.

Many thanks for any help.
Bruno

On 26 jan, 19:14, "Mike" wrote:
Udo,

I found the following helpful when looking for answers and solutions.

http://www.aeromedix.com/aeromedix/a...eox/index.html

Mike

On Jan 26, 10:09 am, "Udo" wrote:

How long does it take for the blood oxygen level to normalize at 15000
ft, after one discovers the flow meter was not adjusted correctly?
Also at what altitude does Oxygen become beneficial, assuming an
average person? Are there any factors, other then altitude it self,
that can lower Blood oxygen level during flight assuming supplemental
oxygen is not used between 5000 and 10000 ft and the pilot has a normal
cardio vascular health? What oxygen level is considered optimum at sea
level and 10000ft to 15000ft?
Udo

My experience with a pulse oxymeter in an altitude chamber was that
blood oxygen levels responds very quickly to changes in available
oxygen. This was reinforced by the instructor also. Just breathing
once or twice from the mouth while using a cannula will reduce blood
oxygen, but it recovers quickly when breathing through the nose
resumes.

The altitude chamber instructor cited loss of visual acuity and night
vision over 5,000 ft. and also emphasized that prior exposure to even
very small amounts of carbon monoxide prior to or during flight
significantly reduces blood oxygen due to COs much higher affinity for
hemoglobin.

Best regards,
Craig

nimbus wrote:
I am also looking for the following information:

Oxygen consumption in function of altitude, age of pilot.


Udo, Bruno: Averages are no good - you are an individual and can vary
greatly from the averages. A finger oximeter like the SPO unit is ~$200.
Get one, use it, and you will know how well you and your oxygen system
are functioning - no guessing.

The objective is to determine when I have to go down when I see a
specific oxygen pressure in my bottle.

My EDS system uses about 100 psi per hour at 18,000', so the real
problem is accurately reading the little gage on the bottle. It's not
very precise and it's hard to read anyway, because it's small. So, when
it's a couple hundred psi from the empty point, I descend. Normally, I
change the bottle out before there is a chance it will get within 500
psi of empty.

Also, I marked the actual zero point on the gage when the bottles were
empty. The zero is off on both of them.

--
Eric Greenwell - Washington State, USA
* Change "netto" to "net" to email me directly
* "Transponders in Sailplanes" http://tinyurl.com/y739x4
* "A Guide to Self-launching Sailplane Operation" at www.motorglider.org