WESTMINSTER, Colo. – Researchers at the Jerusalem College of Technology and the Shaare Zedek Medical Center in Israel have developed a method to measure systolic blood pressure more accurately than manual or automatic meters. A research team led by Meir Nitzan, the first author of a study on the device, has developed a device that uses a pressure cuff wrapped around the arm and an electro-optic probe on the finger, similar to a pulse oximeter. The probe includes a light-source emitting light into the finger and a detector that measures the light transmitted through the finger. The transmitted light exhibits pulses at the heart rate, due to cardiac-induced blood volume changes in the finger tissue.
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