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Is it Normal For Oxygen to Drop with Heart Rate Increase?
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2Tim215 Offline

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Post: #1
Is it Normal For Oxygen to Drop with Heart Rate Increase?
I am wondering if it is normal for my oxygen to drop when my heart rate rises nearer to normal? My heart rate has been between 50-55 since I received my Pulse Oximeter about a month ago. Also before that while checking BP but wasn't able to record it. My oxygen has been low 90's-95 dipping into 80's occasionally. I was at 7cm CPAP pressure and slowly increased 7.2, 7.4 for approx. 12 days, now 8cm last few days. My heart rate has been brought closer to normal 60+ occasionally 70ish at 8cm. But this has caused my oxygen to stay pretty much lower and consistently below 94 running 91-92 with oxygen still dipping 80's occasionally. I was thinking better heart rate would mean better circulation thus better oxygen. Puzzled!

Tim
Finger Lakes Region, NY
11-09-2012 02:33 PM
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PaulaO2 Offline
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Post: #2
RE: Is it Normal For Oxygen to Drop with Heart Rate Increase?
I have noticed with my use of the oximeter, that when my O2 drops, my heart rate increases. I think it is the body trying to pump more blood around.

So it could be the same with you. It is the O2 causing the rate increase vs the other way around.

It's actually rather cool how breathing works!

PaulaO2
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INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
11-09-2012 02:57 PM
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2Tim215 Offline

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Machine: S9 ResMed AutoSet
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Post: #3
RE: Is it Normal For Oxygen to Drop with Heart Rate Increase?
(11-09-2012 02:57 PM)PaulaO2 Wrote:  I have noticed with my use of the oximeter, that when my O2 drops, my heart rate increases. I think it is the body trying to pump more blood around.

So it could be the same with you. It is the O2 causing the rate increase vs the other way around.

It's actually rather cool how breathing works!
Hi Paula, I am all over the map but viewing in 1 and 10 minute views I would lean to heart first more than oxygen first. Don't know what to make of it? Here is a full time photo,
[Image: 2012-11-09_1523.png]

Tim
Finger Lakes Region, NY
11-09-2012 03:30 PM
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PaulaO2 Offline
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Post: #4
RE: Is it Normal For Oxygen to Drop with Heart Rate Increase?
It would make sense that the heart would appear to react first rather than the O2. It takes a few seconds or so for the O2 to be reflected in the reading.

My thoughts, and take that for what little it is worth, is to not worry about this. You may, however, want to mention this to the doc. Some folks do much better with supplemental O2 at night.

PaulaO2
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Breathe deeply and count to zen.

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
11-09-2012 04:32 PM
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2Tim215 Offline

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Post: #5
RE: Is it Normal For Oxygen to Drop with Heart Rate Increase?
(11-09-2012 04:32 PM)PaulaO2 Wrote:  It would make sense that the heart would appear to react first rather than the O2. It takes a few seconds or so for the O2 to be reflected in the reading.

My thoughts, and take that for what little it is worth, is to not worry about this. You may, however, want to mention this to the doc. Some folks do much better with supplemental O2 at night.

Thank you for replies, I'll print off some graphs and see what he thinks.

Tim
Finger Lakes Region, NY
11-09-2012 06:11 PM
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Shastzi Offline

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Post: #6
RE: Is it Normal For Oxygen to Drop with Heart Rate Increase?
Looking at the chart, I would check on the amount of time spent with O2 below 88% and number of events that fall below that level.
I think the program will generate a statistics page that lists all that stuff.
I try to stay above 90% at all times and my pulse usually stays below 100, but that's just me. Wink
I'd be interested in what your doctor has to say.

Cheers!

Sleep-well
02-13-2013 09:41 AM
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DocWils Offline

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Post: #7
RE: Is it Normal For Oxygen to Drop with Heart Rate Increase?
Those look like arousal spikes to me. How do they relate to your apnoea events? I am afraid that the timeline is too compressed to be sure about the duration of the drops and spikes, but at a guess, if you open out the timeline, you'll see that the heart rate reacts to a drop in O2 by spiking, not the other way around. As always, show them to your doc, but I can guess at what he'll say, even though I don't have your file. For the most part, relax until the doc says otherwise....
02-13-2013 02:42 PM
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2Tim215 Offline

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Machine: S9 ResMed AutoSet
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CPAP Software: ResScan SleepyHead

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Post: #8
RE: Is it Normal For Oxygen to Drop with Heart Rate Increase?
Thank you for the replies. Its been weeks, Doctor has the Graphs and more recent ones that I see are worse in my opinion. I even took the liberty to zoom in at the 10 minute view so he could see them better. He did reply stating my photos weren't that good, so I sent them a different way a few weeks ago and still no word. I'll run another overnight tonight and see what comes up, (or down!)!!!
See if this one works here,
[Image: 1-22-13a-1.jpg]
[Image: 01-22-13e.png]
[Image: 01-22-13b.png]

I'm just learning so to me they look bad. There was only one data break and I didn't show it in these photos.

Tim
Finger Lakes Region, NY
02-13-2013 05:56 PM
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DocWils Offline

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Post: #9
RE: Is it Normal For Oxygen to Drop with Heart Rate Increase?
This looks a bit like anoxia drops when given at that detail - again, you should import it into Spleepyhead for the appropriate day and see where it corresponds to AHI events if at all (likely slightly after an event, due to mis-setting timers, and the slowness of the reading compared to the CPAP readings).

What I would like to rule out is noise from finger movements and the like. Do you tape the fingerling to your finger to avoid dislodging it? Twitching and movement can easily lead to noise, but usually it gives out a null reading - this is a bit more like an O2sat drop from something - some sort of event or the like. The question is what, and for your clinician to diagnose that he'd need the printout or data form both the oxymeter and the CPAP in a format that could correlate the two together. If he has Sleepyhead then a combined file can do the trick (via e-mail or memory stick) if not, you need to import the sO2sat data into Sleepyhead and the cpap data for that night as well, and it will prepare the appropriate printout report for you.

BTW, looking at all the other ouchies you have, it could fit the pattern of certain meds and their interactions as well - have a look into that, please.
02-13-2013 07:11 PM
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archangle Offline
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Post: #10
RE: Is it Normal For Oxygen to Drop with Heart Rate Increase?
I think it's just that when you have an apnea, your O2 level drops and your pulse rate goes up.

I don't know how much of the pulse rate is due to O2 dropping and how much is due to your hindbrain saying "OMG, someone's strangling me, better go into panic mode and dump stress hormones into the blood."

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02-13-2013 07:17 PM
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