50.9 MB (1.4 MB compressed)
3450 x 5154 pixels
29.2 x 43.7 cm ⏐ 11.5 x 17.2 in (300dpi)
STEVE HORRELL / SCIENCE PHOTO LIBRARY STEVE HORRELL / SCIENCE PHOTO LIBRARY
Home blood pressure testing. Elderly lady using a digital blood pressure monitor (sphygmomanometer) at home. This device is used to measure a person's blood pressure, an important indicator of health. Blood pressure numbers include systolic (top of screen) and diastolic (bottom of screen) pressures. Systolic blood pressure is the pressure when the heart beats while pumping blood. Diastolic blood pressure is the pressure when the heart is at rest between beats. Here the systolic reading of 153 is higher than normal, but the diastolic pressure is lower than normal.
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