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5. How do I take a measurement?
Please note: You should always be seated before and during
measurement
5.1. Preparing to take a measurement
• Avoid eating and smoking as well as all forms of exertion directly
before measurement. These factors influence the measurement
result. Find time to relax by sitting in an armchair in a quiet atmos-
phere for about 5 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 the
blood pressure changes during the course of the day.
5.2. Common errors:
Note: Comparable blood pressure measurements always
require the same conditions. These are normally quiet conditions.
• All efforts by the user to support the arm can increase blood pres-
sure. Make sure you are in a comfortable, relaxed position and do
not flex any of the muscles in the measurement arm during the mea-
surement. Use a cushion for support if necessary.
• If the arm artery lies considerably lower or higher than the heart, an
erroneously high or low blood pressure will be measured. Each 15
cm (6") difference in height between your heart and the cuff results
in a measurement error of 10 mmHg.
• Cuffs that are too small result in false measurement values.
Selecting the correct cuff is extremely important. Cuff size is depen-
dent upon the circumference of the arm (measured in the center).
The permissible range is printed on the cuff. If this is not suitable
for your use, please call 1-800-568-4147.
• A loose cuff or a sideways protruding air pocket causes false mea-
surement values.
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