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Peak Flow Meter Results



Is it common to feel light-headed after blowing too hard into a peak flow meter? Does it have anything to do with the asthma? (if the reading is in the green zone) Thanks.


 Light-headedness may occur with particularly forceful expiration, and is not specifically associated with asthma. If it is mild, then it is not likely to be a cause for much concern. However, you should make your physician aware of its occurrence.

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Response by:

Dennis   McGraw, MD Dennis McGraw, MD
Assistant Professor
College of Medicine
University of Cincinnati