Afib and Oxygen Desaturations - looking for cause and effect May 06, 2022 11:56AM |
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Re: Afib and Oxygen Desaturations - looking for cause and effect May 06, 2022 02:44PM |
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Re: Afib and Oxygen Desaturations - looking for cause and effect May 06, 2022 04:01PM |
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Re: Afib and Oxygen Desaturations - looking for cause and effect May 06, 2022 05:02PM |
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Re: Afib and Oxygen Desaturations - looking for cause and effect May 06, 2022 05:44PM |
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Re: Afib and Oxygen Desaturations - looking for cause and effect May 06, 2022 07:07PM |
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Searching9
If I understand you correctly, you are saying no, that Afib does not impact cardiac output (volume of blood per second). Or am I misunderstanding you?
Re: Afib and Oxygen Desaturations - looking for cause and effect May 06, 2022 11:05PM |
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Re: Afib and Oxygen Desaturations - looking for cause and effect May 07, 2022 12:17AM |
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Re: Afib and Oxygen Desaturations - looking for cause and effect May 07, 2022 12:32AM |
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The presence of chronic or paroxysmal atrial fibrillation places the patient at increased risk for embolic stroke and/or death. When atrial fibrillation develops, there is loss of the atrial transport factor ("atrial kick"), with consequent decrease of cardiac output. Stroke output declines by 20-30% in normal individuals with loss of atrial kick; the decline in stroke output is considerably larger in patients with heart disease.
Re: Afib and Oxygen Desaturations - looking for cause and effect May 07, 2022 09:37AM |
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Re: Afib and Oxygen Desaturations - looking for cause and effect May 07, 2022 10:29AM |
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Re: Afib and Oxygen Desaturations - looking for cause and effect May 07, 2022 11:14AM |
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GeorgeN
However, regarding the original post, I would hypothesize this reduced cardiac output would likely not be noticed when at rest. Its effect would be experienced during material exertion. In other words, it would limit your top end, not decrease SpO2 during rest.
Re: Afib and Oxygen Desaturations - looking for cause and effect May 07, 2022 11:45AM |
Registered: 11 years ago Posts: 4,228 |
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Searching9
The medical studies cited above are silent on if the patients observed were at rest or were undergoing material exertion.
I could be wrong, but I'd have suspected that if the patients were being stressed by exertion, the study would say that.
(But my suspicions have been known to be wrong occasionally!)