Patient Monitor User Manual Monitoring ICG
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movement in the thorax (aorta). If the physiological and clinical conditions of the patient are not
in accordance with the assumptions of the model, inaccuracies in the parameters may occur.
The following conditions may adversely affect the accuracy of ICG measurement:
Septic shock
Aortic valve regurgitation and defect of septum
Severe aortic sclerosis, aortic prosthesis
Severe hypertension (MAP > 130 mmHg)
Cardiac arrhythmia
Tachycardia with a heart rate higher than 200 bpm
Patient heights below 120 cm or above 230 cm
Patient weights less than 30 kg or greater than 155 kg
Patient movement
Aortic balloon or aortic balloon pump
Simultaneous use of electrical cautery systems during surgical procedures
During operation on the opened thorax the current distribution can be distorted and can lead
to inaccuracies.
20.5 Starting a Measurement
20.5.1 Measurement Procedure
1. Connect the ICG patient cable to the V-ICG module and plug the V-ICG module into the
monitor.
2.
Prepare the patient’s skin and place the ICG sensors on the patient.
3.
Correctly enter the patient information.
20.5.2 ICG Sensor Application
Proper sensor placement is essential for accurate measurements.
1.
Attach the four dual sensors to the patient. The rectangular shaped end with the heart label
should be positioned closet to the heart.
2.
For the neck, use the root of the neck as a reference for vertically locating the rectangular
shaped detecting sensor with the corresponding circular shaped transmitting sensor being
positioned directly superior and in line with the ear lobe.
3.
For the thorax, use the xiphoid process as a reference for vertically locating the rectangular
shaped detecting sensor with the corresponding circular shaped transmitting sensor being
positioned directly inferior and along the mid-axillary line.
4.
Respectively, the neck and the thorax sensors must be 180-degree opposite to each other.
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