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Dr. Andrew Rynne
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Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Reduction In Pulse Ox While Standing?

my pulse ox drops upon standing...why? I am 86 and am having spells when I stand I get weak and fall down. I also see bright lights when this happens. I feel good otherwise and have had everything from head to toe checked all normal except my pulse ox drops when I stand.
Fri, 9 Jun 2017
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General Surgeon,  's  Response
Hello,

The term is orthostatic hypotension.

Reasons are many among which most common is age related (10% to 30% of older people have this). Others are certain drug intake as beta blockers, sugar fluctuations, heart problems, and nervous system disorders.

The physiology behind this is the inability of your body to cope up with the standing position in regard to the blood circulation because more blood is pulled by the gravity in trunk, legs, pulse, BP drops, dizziness as heart cannot pump needed blood to the brain.

Hope I have answered your query. Let me know if I can assist you further.

Regards,
Dr. Bhagyesh V. Patel
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What Causes Reduction In Pulse Ox While Standing?

Hello, The term is orthostatic hypotension. Reasons are many among which most common is age related (10% to 30% of older people have this). Others are certain drug intake as beta blockers, sugar fluctuations, heart problems, and nervous system disorders. The physiology behind this is the inability of your body to cope up with the standing position in regard to the blood circulation because more blood is pulled by the gravity in trunk, legs, pulse, BP drops, dizziness as heart cannot pump needed blood to the brain. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Bhagyesh V. Patel