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Monitoring Impedance Cardiography (ICG)
CAUTION
—Impedance cardiography is a theoretical model of blood flow and
is subject to inaccuracies in cases where the model does not fit an
individual patient's clinical profile. Conditions which may impede
the accuracy of the ICG data are as follows:
îš„ Septic shock.
îš„ Aortic valve regurgitation.
îš„ Severe hypertension (MAP >130 mmHg).
îš„ Patient heights < 120 cm (48 in) or > 230 cm (90 in).
îš„ Patient weights < 30 kg (67 lbs) or > 155 kg (341 lbs).
îš„ Aortic balloon pump insertion.
îš„ Patient movement, including shivering.
îš„ Signal interference caused by cable and/or power cord.
îš„ Open chest surgery in which the normal patterns of blood flow
or electrical current flow of the thorax are altered.
CAUTION
—Hemodynamic parameter calculations are dependent on accurate
patient height, weight, sex and age values. Ensure that these values
have been properly entered.
Monitoring
To verify that you are ready to monitor ICG, follow this procedure.
1. Install the ICG module into the TRAM-RAC 2A module housing. You will hear a
click when the module is fully inserted.
2. Connect one end of the TRAM-NET communication cable into the Auto or
TRAM-NET port on the back of the module housing.
3. Connect the other end of the communication cable into the Aux port on the back
of the monitor.
4. Turn on the power switch on the back of the module housing.
5. Turn on the monitor.
6. Verify the status light on the front of the module illuminates green.
7. Position the sensors on the patient.
8. Connect the ICG cable to the sensors.
9. Connect the ICG cable to the module.
10. Admit the patient to the monitor.
11. Enter the required patient information.
12. Verify that patient data displays in the ICG parameter window.
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