5. Measurement Procedure
Please note: You should always be seated before and during measurement.
5.1. Before measurement:
• Avoid eating, smoking as well as all forms of exertion directly before measurement. These factors influ-
ence the measurement result. Find time to relax by sitting in an armchair in a quiet atmosphere for
about ten minutes before measurement.
• Remove any garment that fits closely to your upper arm.
• Always measure on the same arm (normally left).
• Always perform measurements at the same time of day, since blood pressure changes during the
course of the day.
5.2. Common sources of error:
Note:
Comparable blood pressure measurements always require the same conditions!
These are normally quiet conditions.
• Efforts by the patient to support the arm can increase the blood pressure. Make sure you are in a com-
fortable, relaxed position and do not activate any muscles in the measurement arm during measure-
ment. Use a cushion for support and rest your arm on a table.
• If the upper arm artery lies considerably lower or higher than the heart, a false higher or lower blood
pressure will be measured!
*A variation of 6” between cuff and heart level can result in a reading error of + or - 10mm Hg.
• Cuffs that do not fit properly result in false measurement values. Selecting the correct cuff is extremely
important. The cuff size is dependent upon the circumference, or distance arround your upper arm mea-
sured in the center. The permissible range is printed on the cuff. If this is not suitable for your use,
please contact your dealer.
Note: Use only clinically approved Medline Cuffs. Medline cuffs are specially manufactured and tested.
• A loose cuff or a sideways protruding air pocket causes false measurement values.
• Repeated measurements without rest allows blood to accumulate in the arm. This can lead to false re-
sults. Measurements should be done after a 5 minute rest to ensure restoration of blood flow and accu-
rate measurements.
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