Why Is Blood Pressure Different In The Right And Left Arm?

Question

Asked by jakeski

Why Is Blood Pressure Different In The Right And Left Arm?

On more than a few occasions, I have measured significantly different blood pressures in my right arm and then my left arm, with the readings taken within the same five minutes. What does this mean?

Answer

It is not unusual for your blood pressure to be different in one arm than the other. Blood pressure may be slightly higher in your dominant arm. For example, if you are right-handed, you may get a higher blood pressure reading when taken on your right arm. Usually the difference between arms is 10 mm Hg or less. Now, if you have heart disease, studies show the difference between arms to be greater. The arm with the higher blood pressure, is the one you should monitor.

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