DNA ILLUSTRATIONS / SCIENCE PHOTO LIBRARY DNA ILLUSTRATIONS / SCIENCE PHOTO LIBRARY
Editorial medical illustration showing old and new standards for hypertension. On the left, a mercury sphygmomanometer shows the old standard: any systolic blood pressure over 140 mm Hg and any diastolic blood pressure over 90 mm Hg. On the right, the sphygmomanometer shows a newer hypertension category called prehypertension, where systolic blood pressure can be anywhere from 120 to 139 mm Hg, and diastolic blood pressure anywhere from 80 to 89 mm Hg. Prehypertension indicates a likelihood of developing hypertension in the future. Also shown is an conceptual view of the brain, heart, aorta and kidneys with the peripheral arteries fusing with the sphygmomanometer.
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