caa a22 4500 465826024 CHVBK 20180323112149.0 cr unu---uuuuu 170327e19900401xx s 000 0 eng 10.1007/BF02828286 doi (NATIONALLICENCE)springer-10.1007/BF02828286 Frequently repeated fick cardiac output measurements during anesthesia [Elektronische Daten] [Matsuyuki Doi, Koji Morita, Kazuyuki Ikeda] A computer-based system was developed for monitoring cardiac output using the Fick principle during general anesthesia. The variables of the oxygen-consumption Fick equation were measured using the following system: oxygen uptake by an originally developed respiratory gas monitoring system, arteriovenous oxygen saturation difference by pulse and fiberoptic oximetry, and hemoglobin concentration by an in vitro oximeter. Fick cardiac output and systemic vascular resistance were calculated every 30 seconds. Fick cardiac output was compared with thermodilution cardiac output in 11 anesthetized patients. A total of 208 corresponding cardiac output measurements showed a range of 2 to 9 L · min-1. The correlation coefficient between the thermodilution and Fick cardiac outputs was 0.961, with a regression equation of Fick cardiac output = 1.058 thermodilution cardiac output 0.359. The difference between the thermodilution and Fick cardiac outputs was 0.103 ± 0.395. The Fick cardiac output was significantly lower than the thermodilution cardiac output, especially in the low flow range. We demonstrated that this new monitoring system was clinically feasible and sufficiently accurate, under the limited circumstances of our study. The integration of routinely used equipment has made possible a frequently repcatable method for estimating cardiac output in patients. Little, Brown and Company, 1990 Measurement techniques: cardiac output,pulseoximetry nationallicence Equipment: catheters, fiberoptic, computers, pulse oximeters nationallicence Monitoring: cardiac output, oxygen nationallicence Doi Matsuyuki Department of Anesthesiology, Hamamatsu University School of Medicine, 3600 Handa-cho, Hamamatsu, 431-31, Shizuoka, Japan aut Morita Koji Department of Anesthesiology, Hamamatsu University School of Medicine, 3600 Handa-cho, Hamamatsu, 431-31, Shizuoka, Japan aut Ikeda Kazuyuki Department of Anesthesiology, Hamamatsu University School of Medicine, 3600 Handa-cho, Hamamatsu, 431-31, Shizuoka, Japan aut Journal of Clinical Monitoring Springer Netherlands 6/2(1990-04-01), 107-112 0748-1977 6:2<107 1990 6 10877 https://doi.org/10.1007/BF02828286 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02828286 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Doi Matsuyuki Department of Anesthesiology, Hamamatsu University School of Medicine, 3600 Handa-cho, Hamamatsu, 431-31, Shizuoka, Japan aut NATIONALLICENCE 700 1- Morita Koji Department of Anesthesiology, Hamamatsu University School of Medicine, 3600 Handa-cho, Hamamatsu, 431-31, Shizuoka, Japan aut NATIONALLICENCE 700 1- Ikeda Kazuyuki Department of Anesthesiology, Hamamatsu University School of Medicine, 3600 Handa-cho, Hamamatsu, 431-31, Shizuoka, Japan aut NATIONALLICENCE 773 0- Journal of Clinical Monitoring Springer Netherlands 6/2(1990-04-01), 107-112 0748-1977 6:2<107 1990 6 10877 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer