introductionchapter 1 1-1
What is the CDI
®
System 550?
The Terumo Cardiovascular Systems (Terumo CVS) CDI Blood Parameter Monitoring
System 550 (CDI System 550) is a blood monitoring system to be used on a single
patient during cardiopulmonary bypass procedures. It continuously monitors the
blood in the extracorporeal circuit and provides ongoing information about the blood
parameters. This information is displayed on the CDI System 550’s easy-to-read
screen.
The CDI System 550 monitors and displays the values of the following blood param-
eters:
Partial pressure of oxygen (PO2)
Partial pressure of carbon dioxide (PCO2)
pH
Potassium (K
+
)
Oxygen saturation (SO2)
Hematocrit (HCT)
Hemoglobin (Hgb)
Temperature
In addition, the CDI System 550 can calculate and display the following values:
Base excess (BE)
Bicarbonate ( )
Oxygen saturation (SO2) [calculated when measured is not available]
Oxygen consumption ( O2)
Oxygen delivery (ḊO2)
The CDI System 550 can display the blood parameters either at actual temperature or
adjusted to 37°C.
The CDI System 550 and all related accessories are latex-free.
The CDI System 550 includes a built-in printer that can provide a printed copy of the
displayed blood parameter values.
Indications for Use
The CDI System 550 provides continuous, on-line monitoring of the extracorporeal
partial pressure of oxygen and carbon dioxide, pH, potassium, oxygen saturation, he-
matocrit, hemoglobin and temperature. In addition, calculated values of base excess,
bicarbonate, oxygen saturation, oxygen delivery, and oxygen consumption may also
be provided. These parameters are displayed at either actual temperature or adjusted
to 37°C. For documentation purposes, the systems integral printer provides a hard
copy of displayed parameters.
Contraindications None
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