Purpose The aim of this study was to assess the accuracy of the first and third versions of arterial pressure waveform ardiac output (APCOv.1.0 and APCOv.3.0) measurements in comparison with thermodilution methods in patients undergoing living donor liver transplantation. Methods Twenty patients were anesthetized and mechanically ventilated. A radial arterial line was connected to a dedicated transducer for the APCO evaluation (FloTracTM). A pulmonary artery catheter was placed and connected to a computer system (VigilanceTM) to measure intermittent thermodilution cardiac output (COTD) and continuous cardiac output (CCO). Results A total of 138 measurements were analyzed. Bland-Altman analysis showed that the mean biases for COTD-APCOv.3.0, CO TD-APCOv.1.0, and COTD-CCO were 0.89, 1.73, and -0.79 L/min, and the adjusted percentage errors were 37.5, 30.3, and 43%, respectively. While the variance for COTD-APCOv.3.0 was greater, the accuracy bias) improved by 0.8 L/min as compared with CO TD-APCOv.1.0. The difference COTD-APCO v.3.0 became apparent when systemic vascular resistance was lower than 1000 dyne 9 s/cm5 , especially below 700 dyne 9 s/cm 5. Conclusion These data suggest that the accuracy of APCO v.3.0 has improved compared to APCOv.1.0 due to the updated algorithm, but additional improvements should be evaluated, especially in patients undergoing living donor liver transplantation with low systemic vascular resistance.
All Science Journal Classification (ASJC) codes
- Anesthesiology and Pain Medicine