Quote:
Originally Posted by falconman
It wouldn’t hurt to get an O2 meter to check oxygen levels at various times. They are cheap and available at any drug store or online.
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Unfortunately an oximeter or oxygen meter would be a waste of money for most folks. It would show one if he/she had a low oxygen saturation while awake, but to determine whether a low oxygen saturation was the root of the problem, it would need some type of recording device say, over a night’s sleep.
A little technological info if you’ll bear with me.
When the airways obstruct, as in sleep apnea, the oxygen desaturation is progressive and hits it’s lowest level just as you snore loudly or suddenly gasp yourself awake. As you awaken, and breathe again, the O2 saturation climbs back to near normal levels. So, chances are you’d never catch it. Just like a simple 12 second ECG is not a great indicator of heart electrical conduction or function. It’s only a short window in time, and will generally not catch an arrhythmia unless it is chronic. A 24 hour ECG or holter monitor will catch all heartbeats over that period, and the info is downloaded into a computerized program that classifies the heartbeats into normal and abnormal categories, then provides them to the medical staff in the form of a report.
O2 desaturation can be caused by a few physiological conditions and by poisons like CO and hydrogen cyanide (gas that used to be used in executions- nasty way to go).
If one means an instrument for measuring ambient oxygen, it’s 20.94% of atmosphere whether at sea levels or atop Mt. Everest. Atop Everest there are simply fewer molecules of oxygen because the atmospheric pressure is less than at sea level. Folks who train or live at altitude generally have more red blood cells or haemoglobin, the carrier of O2 to our cells for cellular function.
One other consideration for gasping at night, or in general is cardiac function. An arrhythmia (wonky series of heart beats) can be intermittent or chronic and it can cause the pumping action of the heart to be considerably reduced. As can CHF or congestive heart failure, which is caused by an ineffective pumping of the heart due to age or damage. In CHF, fluid backs up into the lungs ( pulmonary edema) and can cause shortness of breath. Some folks have a condition called orthopnea, and sleeping on 2 pillows or more can help.
The best thing would be to see a medical specialist, especially if sleep is being constantly interrupted. We all need our REM (rapid eye movement) sleep to keep our brains healthy and to reduce drowsiness, especially on the road in a big vehicle.
Cheers
DJ ( yes my friends and colleagues did always call me Dr. D because I like to teach)