Microlife BP 3AD1-A, Instruction Manual

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Before measuring
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Avoid eating, smoking as well as all forms of exertion directly before the measurement. All
these factors influence the measurement result. Relax by sitting in an armchair in a quiet
atmosphere for about 5 minutes before the measurement.
●
Always take measurements on the same arm (normally left) and in the same posture. Do not
switch between right and left arms while recording your blood
pressure as there may be a difference of up to
10mmHg pressure between the two arms.
●
Attempt to carry out the measurements regularly at the
same time of day, since blood pressure changes during the
course of the day. The ideal time to measure your blood
pressure is in the morning after you wake up, before
breakfast and physical activity, and in the absence of the
urge to urinate.
●
Rest for 5 minutes sitting quietly and release all the
tension in your body — specially the arm muscles —
before beginning with the measurement. Remain calm and quiet when the measurement is in
process. Do not speak or move your arm (as well as other body) muscles during the process.
Common sources of errors
●
All efforts by the patient to support the arm can increase the blood pressure. Make sure you
are in a comfortable, relaxed position and do not activate any of the muscles in the
measurement arm during the measurement. Use a cushion for support if necessary.
Attention!
Comparable blood pressure measurements always require the same conditions with a
peaceful and calm environment. Ensure that you take measurements under the same
conditions to obtain an accurate estimate of blood pressure variation patterns.
●
If the arm artery lies considerably lower or higher than the heart, an erroneous value of blood
pressure is measured. Each 15 cm difference in height results in a measurement error of 10
mmHg.
●
A loose cuff causes false measurement values.
●
With repeated measurements, blood accumulates in the arm, which can lead to false results.
Consecutive blood pressure measurements should be repeated after at least a 15 second
pause or after the arm has been held up in order to allow the accumulated blood to flow away.
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Automatic Blood Pressure Monitor Instruction Manual
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