16-1
Chapter 16 C.O. Monitoring
16.1 Overview
C.O. (cardiac output) measurement uses the regular thermodilution method to measure the C.O. and other
hemodynamic parameters in an invasive way. The monitor can measure the blood temperature, and calculate
cardiac output and hemodynamics.
Place the drift catheter into the vein and then let the tube reach the pulmonary artery. Then inject a certain dose
of low-temperature injection solution via the drift catheter. When the injection solution is mixed with the blood
outputted from the heart, the blood temperature changes. The C.O. value is obtained from the blood temperature
change (after the injection is injected) curve based on the technician called thermodilution.
In C.O. measurement you can use the infusion system or a syringe to inject the room-temperature injection solution
or ice water. The monitor saves the results of up to 6 measurements. If more than 6 measurements are performed
before editing the measurement results, the result of the earliest measurement will be deleted.
C.O. measurement is only intended for adults.
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(1) C.O. Cable Interface
16.2 Safety Information
C.O. measurement results may be inaccurate during electrosurgical operations.
All invasive measurements pose a risk to the patient. During measurement, use an aseptic technique
and follow the manufacturer’s instructions.
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