CRISTINA PEDRAZZINI / SCIENCE PHOTO LIBRARY CRISTINA PEDRAZZINI / SCIENCE PHOTO LIBRARY
Blood pressure measurement. Doctor holding the pump (right) and gauge of a sphygmomanometer as he measures a patient's blood pressure. Blood pressure is an important measure of health. High blood pressure (hypertension) puts a great deal of strain on the heart, and is one of the major risk factors in heart attacks and strokes.
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