Authors: Mitsuo Ueda Sho Yokota Fusazo Nakata Shigeo Kaseno Norihiko Sakuraya Osamu Kemmotsu
Publish Date: 1989/09/01
Volume: 3, Issue: 2, Pages: 178-182
Abstract
We evaluate the accuracy of cardiac output measurement with esophageal Doppler ultrasonography ECO A total of 71 simultaneous measurements of esophageal Doppler and thermodilution cardiac output were compared in 16 patients undergoing general anesthesia in the supine position ECO was determined easily with minimal experience and significantly correlated with thermodilution cardiac output TDCO measurement P0001 The regression equation obtained was Y=0983X+0019 and the correlation coefficient was 0935 Furthermore ECO was more reproducible than TDCO However ECO is not able to assess CO accurately in either lateral or prone position and after cardiopulmonary bypass in open heart surgery Our results suggest that the esophageal Doppler technique allows a noninvasive and continuous cardiac output monitoring in patients during general anesthesia and that it is more useful in patients for whom invasive monitoring is considered inappropriate However further improvement in this technique will be necessary for its routine use in clinical anesthesia
Keywords: