1. Due to the direction of blood flow, the blood pressure measured by the left hand and the right hand are usually somewhat different; usually the blood pressure value of the left hand will be slightly higher than that of the right hand, but the difference in the range of 10-20mmHg is normal, but the record should be higher. The measured data shall prevail. If the difference between the hands is more than 40-50mmHg, the blood vessels may be blocked. It is best to consult a doctor to find out the cause.
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