Philips MP20/30 Injectate Guidelines, Guidelines for Right Heart Thermodilution C.O. Injectate

13 Monitoring Cardiac Output C.O. Injectate Guidelines

2From the pop-up list, choose:

–Print Results to print the contents of the C.O. procedure window

–Record Results to record the contents of the C.O. procedure window

–Record Trial to send an individual trial curve to the recorder.

C.O. Injectate Guidelines

The greater the injectate volume and the colder the temperature, the more accurate the measurement. Reduced injectate volume or higher injectate temperature may reduce the specified accuracy.

For adult patients, to ensure the greatest measurement accuracy, use a cold injectate (< 8°C) of 10 ml volume, if not contra-indicated by the patient's condition. Your choice of injectate volume should be based on the injectate temperature and the patient’s cardiac output.

Guidelines for Right Heart Thermodilution C.O. Injectate

If you are using the right heart thermodilution method, the use of injectate with a temperature less than 8°C lower than the blood temperature may cause incorrect values for the thermodilution.

Guidelines for PiCCO C.O. Injectate

If you are using the PiCCO method, the use of injectate with a temperature less than 12°C lower than the blood temperature may cause incorrect values for the thermodilution and CCO calibration.

Injectate Volume, Patient Weight and ETVI Values (PiCCO Only)

When deciding on an injectate volume and temperature, you must consider your patient’s weight and extra-vascular thermal volume index (ETVI).

High ETVI: The dilution of injectate is influenced by extravascular tissue and fluid. The accuracy of the PiCCO method may be reduced in patients with high extra-vascular thermal volume index (ETVI) values. Use the table below as a guide in selecting the correct injectate temperature. As shown in the table, if your patient has an ETVI > 10, you must use cold injectate.

Weight: Use the table below as a guide in choosing an injectate volume appropriate for the patient weight.

Patient Weight	Cold Injectate		Room Temperature Injectate
	ETVI < 10	ETVI ≥ 10	ETVI < 10	ETVI ≥ 10
< 3 kg	2 ml	2 ml	3 ml	Use cold injectate
< 10 kg	2 ml	3 ml	3 ml
< 25 kg	3 ml	5 ml	5 ml
< 50 kg	5 ml	10 ml	10 ml
< 100 kg	10 ml	15 ml	15 ml
≥ 100 kg	15 ml	20 ml	20 ml

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