CNSystems CNAP Monitor 500 HD, Operator'S Manual

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Hemodynamics
CNAP
®
Monitor 500 Page 12-1 Version 5.2.5,
h
21-FHZU-10002
12 Hemodynamics
With device type CNAP
®
Monitor 500i/at+HD it is possible to perform a hemodynamic measure-
ment. Based on the method of the pulse contour analysis the following hemodynamic parameters
can be calculated directly from the CNAP
®
blood pressure waveform.
Parameter Name Unit Range
SV Stroke Volume ml 0 – 500
CO Cardiac Output l/min 0.0 – 99.9
SVR Systemic Vascular Resistance dyn*s/cm
5
0 – 9999
PPV
*
Pulse Pressure Variation % 0 – 40
SVV Stroke Volume Variation % 0 – 40
SVI Stroke Volume Index ml/m² 0 – 500
CI Cardiac Index l/min/m² 0.0 – 99.9
SVRI Systemic Vascular Resistance Index dyn*s* m²/cm
5
0 – 9999
*
The parameter PPV is also available for the type CNAP
®
Monitor 500i/at+PPV.
12.1 Warnings
Additionally to these warnings also mind the cautions and limitations mentioned in chapter 2.
The following warnings apply to the measurement of hemodynamic parameters with the CNAP
®
Monitor 500i/at+HD:
•
The hemodynamic measurement is validated only for adult patients.
•
In patients with a valvular heart disease, the measurement of the HD parameters may re-
sult in severe deviations and high variability.
•
The measurement of hemodynamic parameters must not be performed while using an in-
tra-aortic balloon pump on the same patient.
•
During major peripheral vasoconstriction as a result of a pre-existing disease or drug ad-
ministration, special attention must be paid to the reliability of the HD measurement. In
these cases the arterial pressure can significantly differ from the aortic pressure.
•
With the biometrical calibration of the HD measurement not all physiological boundary con-
ditions such as chronic hypertension, arteriosclerosis or diabetes with an impact on the
compliance of the aorta, can be taken into account. A manual calibration (see 12.3) to an
independent CO measurement is recommended.
12.2 Start of the HD measurement
In the default setting the hemodynamic measurement is disabled – the parameters in the hemody-
namic frame are greyed and numerical values are replaced with a question mark
“?” .
The hemodynamic measurement can be activated for the current patient in the hemodynamic
menu (available with one click in the hemodynamic frame in the upper right corner of the display).
The Hemodynamic option must be set to “
HD ” (see screenshot below).
Distributed by BIOPAC Systems, Inc. Manufactured by CNSystems AG