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Blood Pressure Information
Blood Pressure
Blood pressure is the force of blood pushing against the walls
of arteries. It is typically measured in millimeters of mercury
(mmHg.) Systolic blood pressure is the maximum force exerted
against blood vessel walls each time the heart beats. Diastolic
blood pressure is the force exerted on blood vessels when the
heart is resting between beats.
An individual's blood pressure frequently changes throughout
the course of a day. Excitement and tension can cause blood
pressure to rise, while drinking alcohol and bathing can lower
blood pressure. Certain hormones like adrenaline (which your
body releases under stress) can cause blood vessels to constrict,
leading to a rise in blood pressure.
If these measuring numbers become too high, it means the heart
is working harder than it should.
200
150
100
50
6
Example: fluctuation within a day (male, 35 years old)
Upper curve : systolic blood pressure
Lower curve: diastolic blood pressure
1 2
1 8
Time of day
147
2 4
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