Measuring blood pressure. Patient having her blood pressure measured. A pressure gauge (left) is used to read the pressure in the inflatable cuff on the patient's upper arm. The inflated cuff temporarily cuts off the blood flow. As it is deflated,pulsing blood flow resumes and a reading of the systolic pressure is taken. As the cuff is further deflated,smooth blood flow resumes and the diastolic pressure is recorded. Blood pressure is an important indicator of health. Healthy values for these two pressures in adults are 120mmHg and 80 mmHg | |
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Credit: | Science Photo Library / Brookes, Andrew / National Physical Laboratory |
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