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Hypertension

Hypertension

M175/0259

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Credit

DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY

Caption

Hypertension. Graph of the blood pressure of a man with mild hypertension (high blood pressure). The man wore an ambulatory blood pressure monitor for about 24 hours. The lower graph shows his heart rate in beats per minute (BPM). Time of day lies on the lower axis. The three blood pressures, given in millimetres of mercury (mmHg), are (from top to bottom): systolic, mean arterial and diastolic. The lower dotted line marks the upper limit of healthy diastolic pressure, the pressure between heartbeats, while the upper dotted line shows the upper limit of healthy systolic pressure, the pressure during a heartbeat. During the day these limits were generally exceeded.

Release details

Model release not required. Property release not required.

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