Your blood pressure is 91 over 81?
What your blood pressure values meanYour blood pressure is: Normal
But regarding your systolic (upper) value your blood pressure is rather: Too low - Hypotension!
If you are getting two different types of classification for your blood pressure it is more likely to chose the one that is considered worse, e.g. if your systolic (upper) value is 'normal' and your diastolic (lower) value is 'high normal', consider 'high normal' as your classification.
Scale / Classification as diagram
Your blood pressure is normal.
Requirement for a normal blood pressure is a value of under 130 over 85.
If your systolic (upper) would increase from 91 mmHg to 29 mmHg and your diastolic (lower) value would increase by -1 mmHg your blood pressure would be no more 'normal' but 'high normal'.
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