Oxygen saturation!!!

Oxygen saturation level!!!

Does oxygen saturation vary in lying and sitting position? I find my oxygen saturation 97% to 98% while Standing or seating. but while in bed or lying position it goes to 94 to 96%. is this normal? anyone have this experience. I have shortness of breath, & treating with seretide accuhaler & some other medicine. as my bronco provocation test came positive with 61% lung capacity. though x-ray & other test were normal.


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