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101
ENGLISH
14.3.3 The placing process of catheter
The conventional intubation for C.O. Measurement is placing the catheter from the vein under the clavicle, through
superior vena cava, right atrium, right ventricle, and finally to pulmonary artery. During the intubation, the position of the
catheter can be viewed by X-Ray scanning or estimated blindly. Normally the IBP monitoring is used to estimate the blind
intubation, the blood pressure waveform is different at different position. The following figures show the blood pressure
waveforms at the position from right atrium (RA), through right ventricle (RV) to pulmonary artery (PA) and finally getting
the pulmonary artery contract pressure (PACP).
IBP waveform at different position
1. The surgeon places the catheter into the patient artery. Based on the monitoring of IBP or X-ray scanning, the surgeon
can determine the target position of the catheter.
2. On “Menu” screen, rotate the Navigator Knob and move the focus on the icon “Cardiac Output”, press the knob to
enter C.O. measuring screen.
3. Set the parameters according to the type of catheter and the injecting condition.
4. Press “Start” button, and drop one injectate, then the measured result will be displayed. Take C.O. measurement in
multiple times, and get the average result.
5. Obtain other hemodynamic calculations.
“ ” means connecting
with each other
Injectate delivery system
Catheter
Cables
Connector for injectate
temperature probe
Injectate temperature probe
Connect the C.O. cable to the C.O. connector