DENNIS POTOKAR / SCIENCE PHOTO LIBRARY DENNIS POTOKAR / SCIENCE PHOTO LIBRARY
Sphygmomanometer. View of a sphygmomanometer, used to measure blood pressure, seen with a healthy reading: 120/80 (systolic/diastolic pressure). The sphygmomanometer is used by inflating a cuff (not seen) on a patient's arm using a pump (upper left) until blood flow stops. The cuff is deflated until pulsing blood flow can be heard through a stethoscope (partly seen, lower left), giving the blood pressure during a heartbeat (systolic) on the gauge (lower centre). Further deflation gives the blood pressure between heartbeats (diastolic). Blood pressure, an important measure of health, is expressed as a combination of these two pressures, in millimetres of mercury (mmHg).
Model release not required. Property release not required.