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Blood pressure: Can it be higher in one arm?

Published On: Dec 04 2013 03:16:18 PM CST   Updated On: Dec 18 2013 02:01:46 PM CST
Blood Pressure

By Mayo Clinic News Network

Generally, a small difference in blood pressure readings between arms isn't a health concern. However, a difference of more than 20 millimeters of mercury (mm Hg) for systolic pressure (top number) or more than 10 mm Hg for diastolic pressure (bottom number) may be a sign of an underlying problem -- such as narrowing of the main arteries to that arm. If you have a significant difference in blood pressure readings between arms, talk to your doctor.

A difference of 10 to 15 mm Hg for systolic pressure that shows up repeatedly is a risk marker for vascular disease and for a greater risk of developing cardiovascular disease and related complications during the next 10 years.

Your doctor may measure your blood pressure in both arms to see if you have high blood pressure (hypertension). If your blood pressure is higher in one arm, your doctor will probably use the blood pressure reading from that arm to monitor your blood pressure.

A large difference in blood pressure measurement between your arms could signal a health problem, such as:

  • Blocked arteries in your arms (peripheral artery disease)
  • Kidney disease
  • Diabetes
  • Heart defects

Source: http://www.mayoclinic.com/health/blood-pressure/AN00357/

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