7
d) Tighten the free end of the cuff and close the cuff
with the closer.
e) 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.
f)
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 tu-
be is not kinked.
g) Remain seated quietly for two minutes before you
begin the measurement.
Comment:
If it is not possible to fit the cuff to the left arm, it can
also be placed on the right one. However all measure-
ments should be made using the same arm
5.4. Measuring procedure
After the cuff has been appropriately positioned, the
measurement can begin:
a)
Switch on the instrument by pressing the O/I-Memory
button. The tube should not yet be attached to the
instrument. The following appears in the display for 2
seconds: (Diag.)., A short be-be-beep follows to
indicate that the instrument has equilibrated with the
pressure of the surroundings and the measurement
can therefore begin. A «0» is shown in the display.
b)
Plug the T-connecting piece or the free end of the
tube into the left-hand side of the instrument.
c)
Grasp the pump ball with your free hand and Inflate
the cuff to a pressure at least 40 mmHg higher than
the expected systolic pressure. If you do not know the
value of this pressure, inflate to a value of
approximately 160–180 mmHg. The cuff pressure is
shown continuously on the LCD.
5.
Carrying out a measurement
5.1. Before the measurement:
•
Avoid eating, smoking as well as all forms of exertion directly before the measurement. All these
factors influence the measurement result. Try and find time to relax by sitting in an armchair in a quite
atmosphere for about ten minutes before the measurement.
•
Remove any garment that fits closely to your upper arm.
•
Measure always on the same arm (normally left).
•
Attempt to carry out the measurements regularly at the same time of day, since the 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 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 15 cm difference in height results in a measurement error of
10 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 a
1 minute
pause.
5.3. Fitting the cuff
a)
Pass the end of the cuff (with sewn-in rubber stopper)
through the metal stirrup so that a loop is formed.
The Velcro closer must be facing outwards. (Ignore
this step if the cuff has already been prepared.)
b) Push the cuff over the left upper arm so that the tube
points in the direction of the lower arm.
c) 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.
6
2–3 cm
tube
