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Interpreting Pulse Oximetry Data
#11
(08-30-2017, 05:29 PM)Hojo Wrote: Alan:  Pardon me but let me be frank; as long as I didn't miss something, you had your heart attack 2  years ago, a few months after you had an ECHO with an ejection fraction (EF) of 30% and shortly later improved to 45%.  Now, pretty much 2 years later your looking at your pulse ox and seeing some low numbers.  A lot could change in 2 years to your cardiac function.

The oxyhemoglobin dissociation curve is a sigmoid shape curve, wherein small changes in saturation can actually be significant changes in the actual oxygen content in the blood;  Your saturation of 93% compared to 85% is actually a large difference in how much oxygen is circulating in your blood.

If you are seeing your saturation go that low during the day, I would call the cardiologist.

Look at the oxyhemoglobin dissociation curve here;

https://images.search.yahoo.com/search/i...tion=click

Thanks. During the day my sp02 is a lot more stable. Almost always 95% - 97%, very little movement.
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#12
A lot of people's O2 levels drop somewhat during sleep. Yours are low but not really to the point where it will harm you. At least from what I see on your charts. I have no doubt your suffering from some type of sleep disorder. But it doesn't sound like it's Sleep Apnea. Maybe Acid Reflux is waking you up. It could be a lot of things. Writing down a night by night journal that you could show the Doctors would probably help them narrow it down. Track what you eat, drink, time you wake up, bathroom visits, and symptoms. Wishing you luck in solving the problem.
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#13
(08-30-2017, 05:35 PM)bigalxyz Wrote:
(08-30-2017, 05:29 PM)Hojo Wrote: Alan:  Pardon me but let me be frank; as long as I didn't miss something, you had your heart attack 2  years ago, a few months after you had an ECHO with an ejection fraction (EF) of 30% and shortly later improved to 45%.  Now, pretty much 2 years later your looking at your pulse ox and seeing some low numbers.  A lot could change in 2 years to your cardiac function.

The oxyhemoglobin dissociation curve is a sigmoid shape curve, wherein small changes in saturation can actually be significant changes in the actual oxygen content in the blood;  Your saturation of 93% compared to 85% is actually a large difference in how much oxygen is circulating in your blood.

If you are seeing your saturation go that low during the day, I would call the cardiologist.

Look at the oxyhemoglobin dissociation curve here;

https://images.search.yahoo.com/search/i...tion=click

Thanks. During the day my sp02 is a lot more stable. Almost always 95% - 97%, very little movement.

Ok, the first part of your saturation example didn't indicate that it was during the night, I thought you were having trouble during the day, which would be a big cause for alarm.

Also, do you ever sleep on your left side, that can cause some arrhythmias.  I know I suffer from arrhythmias while sleeping on my left side and if I do, I don't feel as good for most of the day.
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#14
(08-30-2017, 06:23 PM)Hojo Wrote:
(08-30-2017, 05:35 PM)bigalxyz Wrote:
(08-30-2017, 05:29 PM)Hojo Wrote: Alan:  Pardon me but let me be frank; as long as I didn't miss something, you had your heart attack 2  years ago, a few months after you had an ECHO with an ejection fraction (EF) of 30% and shortly later improved to 45%.  Now, pretty much 2 years later your looking at your pulse ox and seeing some low numbers.  A lot could change in 2 years to your cardiac function.

The oxyhemoglobin dissociation curve is a sigmoid shape curve, wherein small changes in saturation can actually be significant changes in the actual oxygen content in the blood;  Your saturation of 93% compared to 85% is actually a large difference in how much oxygen is circulating in your blood.

If you are seeing your saturation go that low during the day, I would call the cardiologist.

Look at the oxyhemoglobin dissociation curve here;

https://images.search.yahoo.com/search/i...tion=click

Thanks. During the day my sp02 is a lot more stable. Almost always 95% - 97%, very little movement.

Ok, the first part of your saturation example didn't indicate that it was during the night, I thought you were having trouble during the day, which would be a big cause for alarm.

Also, do you ever sleep on your left side, that can cause some arrhythmias.  I know I suffer from arrhythmias while sleeping on my left side and if I do, I don't feel as good for most of the day.

Ah ok - yes, during the day spO2 seems to be ok. Or I suppose I should say "while awake" rather than "during the day" because I do occasionally sleep or doze in the afternoons (invariably waking up feeling horrible!). The first of the two graphs I posted was from the middle of the afternoon when I fell asleep for a short while, for example.

I usually sleep on my right side btw. Strangely, until the age of about 30 I usually slept on my left side, and since then I've preferred sleeping on my right. Odd.
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