CareFusion PulseTrace PCA2 Manual Operativo página 23

7. Dark nail varnish should be removed. If this is not possible
then the probe can be placed transversally across the finger.
8. To assure the best measurement reproducibility, subjects
should not be studied immediately after a heavy meal and
excessive exercise/caffeine/alcohol/smoking should be kept
to a minimum prior to the test.
In summary, the subject should be warm, rested and the
cardiovascular system should be stable before commencing a
measurement. As arterial characteristics are blood pressure
and heart rate dependent, great care should be taken to
ensure and confirm stable haemodynamics during the
measurements.
9. A measurement (test) should be started once the waveform
is 'regular' and fills 2/3 of the display. This takes
30-60 seconds after the waveform is first displayed.
a) Don't worry about the occasional ectopic or missed beat;
the device will handle this with no user intervention.
b) If the waveform is noisy or does not fill 2/3 or more of
the display, then make sure the subject is warm with
warm hands and/or try moving the probe to another
larger finger or the thumb to maximise the blood
volume. If all else fails, the test will have to be
abandoned.
c) Bright halogen or fluorescent lights can some times
cause high frequency noise to appear on the waveform.
If this happens switch the light off or cover the
hand/finger.
10. The test should be done three times, using the factory
default settings, separated by 30-45 seconds. This means
that a complete measurement protocol including entering the
subject's details, should take no more than 3 minutes (see
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