Common Sources Of Error; Fitting The Cuff - Procheck UAA0XB-A Instrucciones De Uso

5.2. Common sources of error

Note: Comparable blood-pressure measurements always require the same conditions!
These are normally always quiet conditions.
• 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.
• If the arm artery lies considerably lower (higher) than the heart, an erroneously higher (lower) blood-
pressure will be measured! (Each 15cm difference in height results in a measurement error of10 mmHg!)
• Cuffs that are too narrow or too short result in false measurement values. Selecting the correct cuff is
of extraordinary importance. The cuff size is dependent upon the circumference of the arm (measured in
the centre). The permissible range is printed on the cuff. If this is not suitable for your use, please
contact your dealer. Note: Only use clinically approved Original-Cuffs!
• A loose cuff or a sideways protruding air-pocket causes false measurement values.
• With repeated measurements, blood accumulates in the respective arm, which can lead to false results.
Correctly executed blood-pressure measurements should therefore first be repeated after 1 minute
pause.

5.3. Fitting the cuff

a) Push the cuff over the left upper arm so that the tube
points in the direction of the lower arm.
b) Lay the cuff on the arm as illustrated. Make certain
that the lower edge of the cuff lies approximately 2 to
3 cm above the elbow and that the rubber tube leaves
the cuff on the inner side of the arm.
Important! The mark (ca. 3 cm long bar) must lie
exactly over the artery which runs down the inner side
of the arm.
c) Tighten the free end of the cuff and close the cuff with
the closer.
d) There must be no free space between the arm and the
cuff as this would influence the result. Clothing must
not restrict the arm. Any piece of clothing which does
(e.g. a pullover) must be taken off.
e) Secure the cuff with the Velcro closer in such a way
that it lies comfortably and is not too tight. Lay the
arm on the table (palm upwards) so that the cuff is at
the same height as the heart. Make sure that the tube
is not kinked.
f) Remain seated quietly for two minutes before you
begin the measurement.
7
2–3 cm
tube