CDI Blood Parameter Monitoring System 500 with Arterial Blood parameter module Catalog number 500A , Terumo Cardiovascular Systems Corporations, Ann Arbor, MI. The CDI 500 is indicated for use to display patient blood gas values during extracorporeal procedures. The CDI 500 system is a stand alone systems that is used during extracorporeal procedures to continuously monitor the blood in the extracorporeal circuit, providing ongoing information about the blood parameters.

The CDI 500 monitors may display inaccurate values. These errors include inaccurate potassium, CO2, hematocrit, O2 saturation, pH, hemoglobin and other miscellaneous inaccurate values.

The firm, TERUMO, sent an "URGENT MEDICAL DEVICE CORRECTION" letter dated October 27, 2010 to its customers. The letter described the product, problem and actionst to be taken. The customers were instructed to reveiw this notice; assure that customers are ware of this notice; confirm receipt of this notification by faxing the attached Customer Response Form, and place the attached stickers in a visible place in the Operators' Manuals, such as the inside of the front cover, if additional stickers are needed, the customers should contact Terumo CVS Customer Service at 1-800-521-2818. The letter states that when a displayed value is significantly different from expectations based on the clinical situatioin, the user should verify the accuracy by independent means before treating. The letter included "Caution" stickers that were to be applied to the CDI system operatros manual. The letter also states "Please note that we are not recommending that you stop using your CDI monitor system." If you have any questions or concerns, please contact Terumo CVS Customer Service at 1-800-521-2818. Customer Service hours are from Monday-Friday, 8AM - 6PM EST.