Справочник Пользователя для Innokas Yhtyma Oy VC150
KO00065K
VC150 Vital Signs Monitor
8-7
Masimo SpO
2
: SpO
2
on the screen
If the sensor is detached from the patient, the SpO
2
status switches to ‘off
patient’ and displays --.
NOTES
If pulse rate data from SpO
2
data is available, the Pulse Rate window is
on page 10-1 for more information.
If accuracy for a SpO
2
derived parameter is not yet guaranteed, a dimmed
value is displayed on screen.
Perfusion index measurement
The perfusion index (PI) measurement is a clinical tool that provides a dynamic
numeric reflection of perfusion at the sensor site. PI is a relative value that varies
from patient to patient. The perfusion index value appears in its own field under
the label PI. The user can use the PI value to compare the strength of the pulse
signal at different sites on a patient in order to locate the best site for the sensor,
i.e., the site with the strongest pulse signal.
numeric reflection of perfusion at the sensor site. PI is a relative value that varies
from patient to patient. The perfusion index value appears in its own field under
the label PI. The user can use the PI value to compare the strength of the pulse
signal at different sites on a patient in order to locate the best site for the sensor,
i.e., the site with the strongest pulse signal.
Signal quality values are mathematically calculated perfusion values
represented by asterisks.
represented by asterisks.
1
The SpO
2
signal strength should be adequate. This is
indicated by the display of two or three asterisks or the absence of a Low Signal
Quality message. The more asterisks there are the better the signal quality. The
better the arterial blood flow is, the better signal quality is obtained. A strong
pulse signal increases the validity of SpO
Quality message. The more asterisks there are the better the signal quality. The
better the arterial blood flow is, the better signal quality is obtained. A strong
pulse signal increases the validity of SpO
2
and pulse rate data.
1
In Masimo equipped monitors signal quality is represented by asterisks, however signal quality is
not associated with the perfusion value. Refer to Signal IQ waveform (Masimo) section for further
information regarding Masimo signal quality representation.
information regarding Masimo signal quality representation.
Signal IQ (SIQ)
The Signal IQ provides an indicator of the assessment of the confidence in the
displayed SpO
displayed SpO
2
value. The SpO
2
SIQ can be also used to identify the occurrence
of a patient's pulse.
With motion, the plethysmographic waveform is often distorted and may be
obscured by artifact. Shown as a vertical line, the SpO
obscured by artifact. Shown as a vertical line, the SpO
2
SIQ coincides with the
peak of an arterial pulsation. Even with a plethysmographic waveform obscured
by artifact, the Signal IQ identifies the timing that the algorithms have
determined for the arterial pulsation. The pulse tone (when enabled) coincides
with the vertical line of the SpO
by artifact, the Signal IQ identifies the timing that the algorithms have
determined for the arterial pulsation. The pulse tone (when enabled) coincides
with the vertical line of the SpO
2
SIQ.
The height of the vertical line of the SpO
2
SIQ provides an assessment of the
confidence in the measurement displayed. A high vertical bar indicates higher
confidence in the measurement. A small vertical bar indicates lower confidence
in the displayed measurement. When the Signal IQ is very low, this suggests that
the accuracy of the displayed measurement may be compromised.
confidence in the measurement. A small vertical bar indicates lower confidence
in the displayed measurement. When the Signal IQ is very low, this suggests that
the accuracy of the displayed measurement may be compromised.