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Cardiac Output Units, Dye Dilution

Definition : Cardiac output units that measures the blood flow from the heart using the indicator dilution technique in which a dye is injected upstream of the heart by a balloon-tipped (flow directed) catheter and monitored on the downstream side. These devices consist of a dye-dilution catheter used to inject a bolus of dye (e.g., lidocaine); a densitometer to determine the dye concentration, typically from a sample in a peripheral artery; and an electronic unit to process and display the results.

UMDC code : 16177

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