Doctors who make a habit of measuring blood pressure in only one arm may be doing their patients a disservice.

A new study shows that differences in blood pressure readings between a patient’s right and left arm could be a sign of vascular disease and a greater risk of dying from heart disease. The study, published in The Lancet, suggests doctors should always take blood pressure readings on both arms — an existing guideline that is widely ignored.

Via The New York Times

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