Important Information On The Subject Of Blood-Pressure And Its Measurement; How Does High/Low Blood-Pressure Arise; Which Values Are Normal - WelchAllyn OSZ 3 Easy Instrucciones De Uso

2 Wrist Watch Blood Pressure Monitor
• In cases of cardiac irregularity (Arrhythmia), measurements
made with this instrument should only be evaluated after
consultation with the doctor.
Electromagnetic interference
The device contains sensitive electronic components
(Microcomputer). Therefore, avoid strong electrical or
electromagnetic fields in the direct vicinity of the device (e.g.
mobile telephones, microwave cookers). These can lead to
temporary impairment of the measuring accuracy.
2. Important information on the subject
of blood-pressure and its measurement

2.1 How does high/low blood-pressure arise?

The level of blood-pressure is determined in a part of the brain,
the circulatory centre, and adapted to the respective situation by
way of feedback via the nervous system.
To adjust the blood-pressure, the strength and frequency of the
heart (Pulse), as well as the width of circulatory blood vessels is
altered. The latter is effected by way of fine muscles in the blood
vessel walls.
The level of arterial blood-pressure changes periodically during
the heart activity: During the «blood ejection» (Systole) the value
is maximal (systolic blood-pressure value), at the end of the
heart's «rest period» (Diastole) it is minimal (diastolic blood-
pressure value).
The blood-pressure values must lie within certain normal ranges
in order to prevent particular diseases.

2.2 Which values are normal?

Blood pressure is too high if at rest, the diastolic pressure is
above 90 mmHg and/or the systolic blood-pressure is over 160
mmHg. In this case, please consult your doctor immediately.
Welch Allyn