Overnight Sleep Lab Oxygen Levels (87%)

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Overnight Sleep Lab Oxygen Levels (87%)

Postby emma_chase » Sun Jun 24, 2012 8:54 am

I am feeling confused after my CPAP Titration Study results, which I just got on Friday.

The Respirologist said that I de-saturated down to 87%. My AHI/RDI was 17.5 and the pressure I will need on CPAP is 7.

The doctor did not seem concerned that 87 was a low level. In the hospital, doctors usually put people on Oxygen when they are going into the low 90% area.

She said that people normally drop oxygen levels during sleep, but I am confused about why 87 is acceptable.

I figured by sleep levels dropping, she meant 98-99 down to 94 or so, not into the high 80s.
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Re: Overnight Sleep Lab Oxygen Levels (87%)

Postby CrohnieToo » Sun Jun 24, 2012 10:45 am

Your lowest saturation level was 87% - but - the key is how often, for how long and for what per cent of the night. An occasional short drop to 87% and then back up over 90% for the vast majority of the night is inconsequential. This would hold true in a hospital situation as well.

More than once over the three days I was hospitalized my 02 dropped below 88% - but the nurse would ask me to take a deep breath and my 02 saturation would bounce back up to 94% or better so there was no need or question of putting me on supplemental 02.
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Re: Overnight Sleep Lab Oxygen Levels (87%)

Postby a.b.luisi,d.m.d. » Sun Jun 24, 2012 1:10 pm

emma_chase wrote:I am feeling confused after my CPAP Titration Study results, which I just got on Friday.

The Respirologist said that I de-saturated down to 87%. My AHI/RDI was 17.5 and the pressure I will need on CPAP is 7.

The doctor did not seem concerned that 87 was a low level. In the hospital, doctors usually put people on Oxygen when they are going into the low 90% area.

She said that people normally drop oxygen levels during sleep, but I am confused about why 87 is acceptable.

I figured by sleep levels dropping, she meant 98-99 down to 94 or so, not into the high 80s.

I am a dentist working in dental sleep medicine. The rule of thumb is that during sleep you ideally want your oxygen saturation to stay at 90% or higher at all times. However, if it goes below 90% briefly, they call it trivial hypoxia and consider it no big deal. You have to stay below 90% for at least 1% of your sleep time before they become the least bit concerned.
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Re: Overnight Sleep Lab Oxygen Levels (87%)

Postby jfay » Sun Jun 24, 2012 11:51 pm

I had a sleep study done on June 6th ordered by a pulmo. She still hasn't returned several phone calls from me or my DME with my sleep study results nor has she faxed over a copy of the sleep study, a script for my cpap and supplies or a copy of my last apptwith her. After i faxed the DME a copy of my sleep study she felt I needed to see a sleep specialist instead of dealing with her. My appt with the sleep specialist is July 10th.
I was on oxygen while awake at the time i had my first sleep study and diagnosed with OSA. At that time my oxygen sats ranged from 97 to 80%. I did not need oxygen with my cpap. I was diagnosed with chronic hypoxemia, copd, asthma and osa and was on oxygen for 4 1/2 years. When I started getting SSI and Medicaid I had to find another pulmo because the pulmo/sleep specialist (he is both) i was seeing doesn't accept medicaid. I went to the new pulmo using the oxygen i had been prescribed and felt like an idiot when she told me she didn't see ANY copd, asthma or hypoxemia at all so refused to fax over a script for it. That was back in Jan 2012. Haven't used oxygen since.
Had my sleep study done on June 6th (took me months to convince her I had osa and needed a sleep study). The lowest oxygen sat was 72% and the oxygen sat was below 90% for a total of 34.4% of the recording time. It says i have severe osa with an apnea-hyponea index of 64.3 and that I had significant nocturnal hypoxia prior to the application of cpap. Any idea what any of this means?
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Re: Overnight Sleep Lab Oxygen Levels (87%)

Postby CrohnieToo » Mon Jun 25, 2012 8:22 pm

Yes, it means you need a better pulmonologist than this gal. All she is seeing is that you are on Medicaid.
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Re: Overnight Sleep Lab Oxygen Levels (87%)

Postby sue12175 » Wed Jan 30, 2013 6:19 am

This trivial hypoxia is BS because it causes me to have severe angina, panting and headches so it isnt trivial if its causing you symptoms
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Re: Overnight Sleep Lab Oxygen Levels (87%)

Postby sue12175 » Wed Jan 30, 2013 6:20 am

and yet they still wont give me oxygen saying my drop into the 80s isnt long enough- apparently its long enough to cause me health issues though
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Re: Overnight Sleep Lab Oxygen Levels (87%)

Postby a.b.luisi,d.m.d. » Wed Jan 30, 2013 8:12 pm

sue12175 wrote:This trivial hypoxia is BS because it causes me to have severe angina, panting and headches so it isnt trivial if its causing you symptoms

Point well taken. The trivial hypoxia statement is just a generalization. Obviously, there are patients with such severe and sensitive systemic problems that ANY level of hypoxia is cause for concern. If anyone feels symptomatic like this it certainly would be prudent to report it to your doctors.
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Re: Overnight Sleep Lab Oxygen Levels (87%)

Postby CrohnieToo » Wed Jan 30, 2013 11:37 pm

Consider a cardiac evaluation for something like Atrial fibrillation. Tachycardia can cause shortness of breath and angina. Sometimes bearing down as if you are constipated and trying to move things thru and out will stop the pain and SOB if it is A fib or tachycardia. A 24 hour holter monitor can sometimes detect A fib but if it occurs only intermittently and not faithfully every day it may require a 7 to as much as a 30 day cardiac event monitor.
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Re: Overnight Sleep Lab Oxygen Levels (87%)

Postby snuzyQ » Thu Jan 31, 2013 1:53 pm

Hi sue12175...Get yourself to your regular doctor please...ASAP...and report your severe angina and increased respiration rate to him/her.

After your condition has stablilized, get yourself to a doctor specializing in sleep medicine for follow up/reevaluation of your sleep disorder and CPAP treatment. Your CPAP treatment needs to be followed by a doctor specializing in sleep medicine.

Take care.
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