Dr.Frei M-500A, User Manual, Page: 6 / 184

6
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 flow
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
corresponds 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 fluctuations during the day even in healthy
people. The fluctuations are influenced 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, affects
blood vessels making their walls thick and less elastic.
One of the features of the hypertension is its ability to remain unnoticed
for the patient at its early stages. That’s why the selfcontrol of the blood
pressure is so important. With the illness progressing, headaches and
regular dizziness appear, the sight declines, the functioning of vitalses
(encephalon, heart, kidneys, blood vessels) breaks down. Without special
treatment the complications of hypertension might be kidney damages,
breast-pang, paralytic stroke, aphasia, dementia, heart attack and stroke.
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DIA blood pressure
SYS blood pressure
Time (hours)
mmH
g
SYS blood pressure
DIA blood pressure
Pulse