Have Your Blood Pressure Readings in Both Arms
Posted Feb.01, 2012 in Blood Pressure, Health & Wellness, Healthy Heart, News, Uncategorized
A recent study, published in The Lancet, shows that in order to get an accurate blood pressure reading, doctors should take the patient’s blood pressure in both the right and left arm. The findings showed that there was a difference in systolic blood pressure between the two arms – about 15 milimeters of mercury (mm Hg). This difference in the blood pressure is linked to an increased risk of peripheral artery disease (PAD) which is a condition where there is a narrowing of the arteries, especially in the legs and feet. The 15 millimeters difference of mercury in the two arms means the individual is 2.5 times more likely to have PAD and the risk of cerebrovasular disease is 1.6 times higher. It was also associated with a 70% greater risk of dying from heart disease.
The Lancet study brings out the fact that there already is an existing guideline for doctors showing that they should always take blood pressure readings from both arms. Dr. Christopher Clark, the lead author in the study said, ”Recommendations to measure both arms exist in both British and American blood pressure managment guidelines.” He goes on to say, “This is out there as guidance, but it’s guidance that isn’t regularly followed.” A difference of just 10 millimeters was enough to raise the risk of peripheral vasular disease so having the difference of 15 millimeters should be enough to make more doctors pay attention to the guidelines.
Why would there be a difference in readings between the two arms? The authors of the study hypothesized that it could be the narrowing or hardening of a person’s arteries, especially on one side of their body.
Dr. Clark said, “If we don’t know to measure both arms, we’re not going to make the right diagnosis and the right treatment choices for our patients.” Since many doctors only measure one arm, the next time you visit your doctor, make sure to remind them to take your blood pressure readings in both arms. By doing this you are ensuring that you will receive the most accurate readings and more likely a correct diagnosis.



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