Two new methods of determining the cardiac output (CO) in extracorporeal detoxication (ECD) by thermal dilution were verified. The CO values, determined by the dilution of electrical impedance indicators (COimp) and by COimp thermal dilution (COtd), were compared within 31 matched analysis in 20 patients. The correlation coefficient: r = 0.98; n = 31; COtd = 0.98*, COimp + 0.19 (p < 0.01). The CO values, determined by ultrasound dilution (COus) and by thermal dilution (COtd), were compared within 31 matched analysis in 11 patients. The correlation coefficient: r = 0.97; COus = 1;* COtd = 0.32, (p < 0.01).
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