iHerz iCare - Blood Pressure Information and Measurement; What Is Blood Pressure?; Day-Night Blood Pressure Fluctuations

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EN
IMPORTANT INFORMATION ON BLOOD
PRESSURE AND ITS MEASUREMENT
What Is Blood Pressure?
Blood pressure is the pressure that your
blood extends to the vascular walls. Blood
pressure is necessary to provide for constant
blood ow inside the body. Thanks to it the
cells get oxygen that provides for their normal
functioning. The heart performs the function of
a «pump», sending blood to the blood vessels.
Each heart beat creates a certain level of the blood pressure.
There are 2 kinds of blood pressure: a systolic (upper) one, which cor-
responds to the heartbeat pushing blood into the arteriae; and a diastolic
(lower) one, which means the blood pressure between two heartbeats.
Blood pressure is subject to uctuations during the day even in healthy
people. The uctuations are inuenced by a number of factors - time of
day, person’s condition, physical or mental activity, environment, etc.
Day-Night Fluctuations of the Blood Pressure
An increase of blood pressure increases the burden onto the heart, a󰀨ects
blood vessels making their walls thick and less elastic.
One of the features of the hypertension is its ability to remain unnoticed for
170
160
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140
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90
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40
8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 2.00 4.00 6.00 8.00
DIA blood pressure
SYS blood pressure
Time (hours)
mmHg