PMID- 7575799
OWN - NLM
STAT- MEDLINE
DCOM- 19951221
LR  - 20190830
IS  - 0735-6757 (Print)
IS  - 0735-6757 (Linking)
VI  - 13
IP  - 6
DP  - 1995 Nov
TI  - Comparison of cardiac output measurements by thermodilution and thoracic 
      electrical bioimpedance in critically ill versus non-critically ill patients.
PG  - 626-31
AB  - Thoracic electrical bioimpedance (TEB) has been proposed as an alternative to 
      thermodilution (TD) for the measurement of cardiac output in settings such as the 
      Emergency Department where invasive monitoring is not available. Validation 
      studies comparing TEB with TD suggest a wide range of variability in the 
      agreement between the two methods. This prospective study tests the hypothesis 
      that this variability may be related to the severity of patient illness. Fifteen 
      non-critically ill patients undergoing cardiac catheterization and 13 critically 
      ill patients who underwent Swan-Ganz catheterization in the medical intensive 
      care unit (MICU) were enrolled. Fifty-one pairs of data from the catheterization 
      laboratory and 49 pairs of data from the MICU were obtained. The patients were 
      graded retrospectively according to the APACHE II scoring system. The mean 
      difference (bias) between TEB and TD results was calculated for each patient 
      using the method suggested by Bland and Altman. A pooled t-test was performed to 
      determine whether there was any significant difference between the APACHE II 
      scores or cardiac output measurements obtained by TEB and TD in the two groups. 
      APACHE II scores were 4.7 +/- 1.2 for the catheterization laboratory and 14.2 +/- 
      5.0 for the intensive care unit patients (P < .001). The catheterization 
      laboratory (cath lab) group bias was 0.23 +/- 2.19, whereas the MICU bias was 
      .002 +/- 2.33. There was no significant difference in the bias between the two 
      groups despite significant differences in the APACHE II scores. Standard 
      deviations of the bias were less than 15% different from each other.(ABSTRACT 
      TRUNCATED AT 250 WORDS)
FAU - Weiss, S
AU  - Weiss S
AD  - Department of Medicine, LSU Medical School, New Orleans, USA.
FAU - Calloway, E
AU  - Calloway E
FAU - Cairo, J
AU  - Cairo J
FAU - Granger, W
AU  - Granger W
FAU - Winslow, J
AU  - Winslow J
LA  - eng
PT  - Clinical Trial
PT  - Comparative Study
PT  - Controlled Clinical Trial
PT  - Journal Article
PL  - United States
TA  - Am J Emerg Med
JT  - The American journal of emergency medicine
JID - 8309942
SB  - IM
MH  - APACHE
MH  - Adult
MH  - Bias
MH  - Cardiac Catheterization
MH  - *Cardiac Output
MH  - *Cardiography, Impedance
MH  - Catheterization, Swan-Ganz
MH  - Confidence Intervals
MH  - Critical Illness
MH  - Female
MH  - Humans
MH  - Male
MH  - Middle Aged
MH  - Prospective Studies
MH  - *Thermodilution
EDAT- 1995/11/01 00:00
MHDA- 1995/11/01 00:01
CRDT- 1995/11/01 00:00
PHST- 1995/11/01 00:00 [pubmed]
PHST- 1995/11/01 00:01 [medline]
PHST- 1995/11/01 00:00 [entrez]
AID - 0735-6757(95)90045-4 [pii]
AID - 10.1016/0735-6757(95)90045-4 [doi]
PST - ppublish
SO  - Am J Emerg Med. 1995 Nov;13(6):626-31. doi: 10.1016/0735-6757(95)90045-4.