Measurement Procedure; Before Measurement; Common Sources Of Error - ADC Advantage 6021 User Manual

• There is a break of 15 seconds between the measurements (15 seconds are adequate
according to "Blood Pressure Monitoring, 2001, 6:145-147" for oscillometric instru-
ments). A countdown indicates the remaining time and a beep will sound 5 seconds be-
fore the 2nd and 3rd readings will begin.
• The individual results from measurements 1, 2 and 3 are not initially displayed.
• If you want to see each of the individual readings making up a triplicate
reading, turn the unit off, then press and hold the Memory button for 3
seconds immediately after a ADC
urement. Note: You can only see the individual readings one time imme-
diately following an Averaging Mode measurement. See section 5.4 g.
• Do not remove the cuff between measurements.

5. Measurement Procedure

Note: You should always be seated before and during measurement.

5.1. Before 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 arm-
chair in a quiet atmosphere for about ten minutes before taking a measurement.
• Remove any garment that fits closely to your upper arm.
• Always measure on the same arm (normally left).
• Always compare measurements taken at the same time of day, since blood pressure
changes during the course of the day, as much as 20-40 mmHg.

5.2. Common sources of error:

Note: Comparable blood pressure measurements always require
the same conditions! Conditions should always be quiet.
• All efforts by the user to support the arm can increase blood pressure. Make sure you are in
a comfortable, relaxed position and do not flex any of the muscles in the measurement arm
during the measurement. 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 15cm (6 inch) difference in height between your
heart and the cuff results in a measurement error of 10 mmHg!
• Cuffs that are too narrow or too short result in false measurement values. Selecting the cor-
rect cuff is extremely important. Cuff size is dependent 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 1-800-232-2670.
® Averaging Mode Technology™ meas-
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