BRIAN YARVIN / SCIENCE PHOTO LIBRARY BRIAN YARVIN / SCIENCE PHOTO LIBRARY
Blood pressure measurement. Doctor measuring a patient's blood pressure using a sphygmomanometer. A cuff (black, lower right) is tightened around the patient's upper arm and readings are taken from a pressure gauge (not seen). The doctor is listening to the patient's blood flow using a stethoscope. Abnormally high blood pressure (hypertension) can cause heart failure and kidney damage.
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