Measuring Procedure; Inflating Further - Microlife BP 3BTO-H Instruction Manual

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 indi-
cate that the instrument has equilibrated with the pressure of the sur-
roundings 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 pres-
sure 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 approx.
160–180 mmHg. The cuff pressure is shown continuously on the LCD.
d) After the inflation process lay down the pump ball and remain in a
quiet and relaxed sitting position. The measurement now proceeds on
its own. If no measurement takes place and all that appears in the dis-
play is a flashing, upwards pointing arrow, see below under «Inflate
further». When the instrument detects a pulse, a heart symbol in the
display starts to flash and a beep is heard for every heart beat.
e) When the measurement has been concluded, a long peep tone sounds.
The measured systolic and diastolic blood-pressure values as well as
the pulse frequency are now displayed. The cuff pressure can now be
quickly released by pressing the release valve at the pump ball.

5.5. Inflating further

If the cuff is not inflated sufficiently, the measurement is broken
off after a few seconds and a flashing arrow pointing upwards
appears in the display.
It is then necessary to inflate further to at least 20 mmHg higher
than the previous value.
The instruction to inflate further can appear several times if the
pressure is still not sufficient.
Attention:
If the cuff is inflated too far (over 300 mmHg), «HI» appears in
the display and a warning signal is sounded. The cuff pressure
must then be immediately released using the quick-release
valve) at the pump ball)!
As soon as the cuff is inflated sufficiently and the measure-
ment is proceeding, continue as described under points d–e.
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