PMID- 9084523
OWN - NLM
STAT- MEDLINE
DCOM- 19970417
LR  - 20150901
IS  - 0254-1319 (Print)
IS  - 0254-1319 (Linking)
VI  - 34
IP  - 2
DP  - 1996 Jun
TI  - The accuracy of bioimpedance cardiography in the measurement of cardiac output in 
      comparison with thermodilution method.
PG  - 55-9
AB  - BACKGROUND: Continuous noninvasive measurement of cardiac output (CO) is 
      clinically desirable. Thoracic electrical bioimpedance (TEB) offers such a 
      continuous noninvasive technique for the measurement of CO on a beat-by-beat 
      basis. The purpose of this study was to compare the correlation of TEB with the 
      thermodilution (TD) method of measuring CO during surgery. METHODS: Eighteen 
      patients (age 39-64 yr), with coronary artery disease undergoing coronary artery 
      bypass graft surgery were studied. Patients were excluded if severe arrhythmias 
      or aortic insufficiency was present before operation. Simultaneous measurements 
      of CO were performed in each patient with the use of a 7F Swan-Ganz catheter and 
      TEB. 128 matched pair values were obtained and compared using regression 
      analysis. Bias (mean difference between measurements) and limits of agreement 
      with 95% confidence limits were also calculated. RESULTS: A good correlation 
      (correlation coefficient, r = 0.86; TEB = 0.55 + 0.82TD, p < 0.001) between the 
      two methods of measuring CO was observed, and the standard error was small (SE = 
      0.218). The mean difference between CO measurements (TEB-TD) was -0.66 L/min and 
      had a 95% confidence interval of 0.12 to 0.98 L/min. The standard deviation of 
      the difference was 0.915 L/min and the limits of agreement were from -2.49 to 
      1.17 L/min. There appeared to be a good agreement between TEB and TD CO 
      measurement in this study. CONCLUSIONS: Technological advances in TEB have 
      resulted in more accurate CO measurements. Such device offers a noninvasive 
      alternative to the TD technique for the determination of CO, and may potentially 
      be very useful as a powerful, noninvasive, continuous technique for monitoring 
      cardiac function in the clinical setting.
FAU - Wong, K L
AU  - Wong KL
AD  - Department of Anesthesia, Mackay Memorial Hospital, Taipei, Taiwan, R.O.C.
FAU - Hou, P C
AU  - Hou PC
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - China (Republic : 1949- )
TA  - Acta Anaesthesiol Sin
JT  - Acta anaesthesiologica Sinica
JID - 9432542
SB  - IM
EIN - Acta Anaesthesiol Sin 1996 Sep;34(3):172
MH  - Adult
MH  - *Cardiac Output
MH  - Electric Impedance
MH  - Female
MH  - Humans
MH  - Male
MH  - Middle Aged
MH  - *Thermodilution
EDAT- 1996/06/01 00:00
MHDA- 1996/06/01 00:01
CRDT- 1996/06/01 00:00
PHST- 1996/06/01 00:00 [pubmed]
PHST- 1996/06/01 00:01 [medline]
PHST- 1996/06/01 00:00 [entrez]
PST - ppublish
SO  - Acta Anaesthesiol Sin. 1996 Jun;34(2):55-9.