D. Thangathurai et al., CONTINUOUS INTRAOPERATIVE NONINVASIVE CARDIAC-OUTPUT MONITORING USINGA NEW THORACIC BIOIMPEDANCE DEVICE, Journal of cardiothoracic and vascular anesthesia, 11(4), 1997, pp. 440-444
Citations number
20
Categorie Soggetti
Anesthesiology,"Peripheal Vascular Diseas","Cardiac & Cardiovascular System
Objectives: To compare a new noninvasive bioimpedance device with the
standard thermodilution method during the intraoperative period in hig
h-risk patients undergoing oncological surgery. Design: Prospectively
collected data with retrospective analysis. Setting: The study was und
ertaken at a university hospital, single institution. Participants: Tw
enty-three selected adults undergoing extensive, ablative oncological
surgery. Interventions: Simultaneous measurements of cardiac output by
a new bioimpedance method and the standard thermodilution method duri
ng the intraoperative and immediate postoperative periods. Measurement
s and Main Results: The correlation coefficient between the two method
s was r = 0.89, p < 0.001. Bias and precision analysis between the two
techniques showed a mean bias of 0.1 L/min and SD of the bias (precis
ion) of 1.0 L/min (95% level of agreement +2.1 L/min to -1.9 L/min). A
fter software enhancement, data from the last 11 monitored patients sh
owed improved correlation between the two methods; r = 0.93, mean bias
-0.1 L/min, and precision 0.8 L/min,Electrical and motion induced int
erference only transiently impaired the performance of the new impedan
ce method. Conclusion: This new impedance device is a safe, reliable,
clinically acceptable alternative to the invasive thermodilution metho
d in the operating room environment. Copyright (C) 1997 by W.B. Saunde
rs Company.