Does sleep apnea mean lower day time oxygen levels too ?

heartchakra · Post by **heartchakra** » Fri Jun 12, 2020 7:03 am

Hello ,

So dad has sleep apnea since many years. Was undiagnosed for any years and has been wearing
The Bipap machine since around 6-7 years.

His day time SPO2 readings come to around 94-95 , which the doctor said was OK - He is 78, in good health , and goes for walks daily for an hour.

Do others also have day time readings on the lower range of normal due to prolonged sleep apnea ?

Thanks

LSAT · Post by **LSAT** » Fri Jun 12, 2020 7:16 am

Nothing wrong with 94/95..For years my average O2 readings have been in the lower 90's. I have worn a 24 hr Holter Monitor several times with normal outcomes. If you search "Normal O2 readings" you will get a variety of variations. Some say 75-100 is normal..others 90-100.

raisedfist · Post by **raisedfist** » Fri Jun 12, 2020 12:13 pm

Maybe but for the vast majority it would be over a long period of time due to straight on the heart...94/95 could just be normal aging...either way it's not a cause for alarm.

chunkyfrog · Post by **chunkyfrog** » Fri Jun 12, 2020 12:48 pm

We akso know that tobacco use constricts blood vessels, reducing blood/oxygen
to damaged tissues, prolonging healing time by often double or more.
Anoxia, whether temporary or permanent results in tissue death.

jnk... · Post by **jnk...** » Fri Jun 12, 2020 2:06 pm

Untreated obstructive sleep apnea, or less-than-optimally treated obstructive sleep apnea, can cause conditions that lower O2. Thus the importance of verifying treatment efficacy using a full-data treatment machine whenever possible and never sleeping without the machine.

palerider · Post by **palerider** » Fri Jun 12, 2020 5:17 pm

heartchakra wrote: ↑
Fri Jun 12, 2020 7:03 am
Do others also have day time readings on the lower range of normal due to prolonged sleep apnea ?

Sleep apnea has nothing at all to do with daytime SpO2 levels,

On the other hand, there are articles that suggest that there are theories that there could be some correlation.

Black Sheep · Post by **Black Sheep** » Sun Jun 14, 2020 3:04 am

palerider wrote: ↑
Fri Jun 12, 2020 5:17 pm

heartchakra wrote: ↑
Fri Jun 12, 2020 7:03 am
Do others also have day time readings on the lower range of normal due to prolonged sleep apnea ?

Sleep apnea has nothing at all to do with daytime SpO2 levels,

howdy, I beg to differ with you my friend. I have apnea for sure and before treatment I was sleepy during the day and my wake O2 stat was 75-78, during sleep my O2 stat would dip to 50's. Now that I get a median 6-7 hours of nightly treatment, I am not sleepy at all during the day and my wake O2 stat went up to 90-92( During treatment at night my O2 stat goes up to 95-97 ). I am also able to remember and/or see dreams in my sleep.

palerider · Post by **palerider** » Sun Jun 14, 2020 7:01 pm

Miss Emerita · Post by **Miss Emerita** » Sun Jun 14, 2020 8:12 pm

palerider wrote: ↑
Sun Jun 14, 2020 7:01 pm

Black Sheep wrote: ↑
Sun Jun 14, 2020 3:04 am
howdy, I beg to differ with you my friend. I have apnea for sure and before treatment I was sleepy during the day and my wake O2 stat was 75-78, during sleep my O2 stat would dip to 50's. Now that I get a median 6-7 hours of nightly treatment, I am not sleepy at all during the day and my wake O2 stat went up to 90-92( During treatment at night my O2 stat goes up to 95-97 ). I am also able to remember and/or see dreams in my sleep.
You may wish to differ, but you're wrong.

Your SpO2 levels will normalize within a couple of MINUTES once breathing.

Sleep apnea has nothing to do with daytime SpO2 levels., nothing at all.

I was curious about this because Black Sheep has mentioned in another post that he was diagnosed with obesity-related hypoventilation syndrome. And to my surprise, I see here that treating the apnea can lead to improved ventilation during the day:

https://www.pulmonologyadvisor.com/home ... -syndrome/

The relevant bit is this:

The fact that about 90 percent of OHS patients have evidence of obstructive sleep apnea on polysomnogram and that relief of upper airway obstruction with CPAP often leads to the resolution of daytime hypercapnia speaks to a role for sleep-disordered breathing in the development of OHS. One model that links nocturnal obstructive events with daytime hypercapnia proposes that recurrent nocturnal rises in CO2 during apneic events could eventually lead to elevation in the serum bicarbonate level if the interval between these events is not sufficient to eliminate the accumulated CO2. This elevation in serum bicarbonate blunts the respiratory responsiveness to CO2 and leads to daytime hypoventilation.

The whole article is quite interesting for anyone who would like to know more about obesity hypoventilation syndrome.

Does sleep apnea mean lower day time oxygen levels too ?

Does sleep apnea mean lower day time oxygen levels too ?

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Re: Does sleep apnea mean lower day time oxygen levels too ?

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