PMID- 21636930
OWN - NLM
STAT- MEDLINE
DCOM- 20110928
LR  - 20220311
IS  - 0974-5181 (Electronic)
IS  - 0971-9784 (Linking)
VI  - 14
IP  - 2
DP  - 2011 May-Aug
TI  - Comparison of transthoracic electrical bioimpedance cardiac output measurement 
      with thermodilution method in post coronary artery bypass graft patients.
PG  - 104-10
LID - 10.4103/0971-9784.81564 [doi]
AB  - Transthoracic electrical bioimpedance (TEB) has been proposed as a non-invasive, 
      continuous, and cost-effective method of cardiac output (CO) measurement. In this 
      prospective, non-randomized, clinical study, we measured CO with NICOMON (Larsen 
      and Toubro Ltd., Mysore, India) and compared it with thermodilution (TD) method 
      in patients after off-pump coronary artery bypass (OPCAB) graft surgery. We also 
      evaluated the effect of ventilation (mechanical and spontaneous) on the 
      measurement of CO by the two methods. Forty-six post-OPCAB patients were studied 
      at five predefined time points during controlled ventilation and at five time 
      points when breathing spontaneously. A total of 230 data pairs of CO were 
      obtained. During controlled ventilation, TD CO values ranged from 2.29 to 6.74 
      L/min (mean 4.45 +/- 0.85 L/min), while TEB CO values ranged from 1.70 to 6.90 
      L/min (mean 4.43 +/- 0.94 L/min). The average correlation (r) was 0.548 (P = 
      0.0002), accompanied by a bias of 0.015 L/min and precision of 0.859 L/min. In 
      spontaneously breathing patients, TD CO values ranged from 2.66 to 6.92 L/min 
      (mean 4.66 +/- 0.76 L/min), while TEB CO values ranged from 3.08 to 6.90 L/min 
      (mean 4.72 +/- 0.82 L/min). Their average correlation was relatively poor (r = 
      0.469, P= 0.002), accompanied by a bias of -0.059 L/min and precision of 0.818 
      L/min. The overall percent errors between TD CO and TEB CO were 19.3% (during 
      controlled ventilation) and 17.4% (during spontaneous breathing), respectively. 
      To conclude, a fair correlation was found between TD CO and TEB CO measurements 
      among post-OPCAB patients during controlled ventilation. However, the correlation 
      was weak in spontaneously breathing patients.
FAU - Sharma, Vikas
AU  - Sharma V
AD  - Department of Anaesthesiology and Critical Care, Escorts Heart Institute and 
      Research Centre Ltd., New Delhi, India.
FAU - Singh, Ajmer
AU  - Singh A
FAU - Kansara, Bhuvnesh
AU  - Kansara B
FAU - Karlekar, Anil
AU  - Karlekar A
LA  - eng
PT  - Comparative Study
PT  - Evaluation Study
PT  - Journal Article
PL  - India
TA  - Ann Card Anaesth
JT  - Annals of cardiac anaesthesia
JID - 9815987
SB  - IM
MH  - Adult
MH  - Aged
MH  - Algorithms
MH  - Cardiac Output/*physiology
MH  - *Coronary Artery Bypass, Off-Pump
MH  - Critical Care
MH  - Echocardiography
MH  - *Electric Impedance
MH  - Electrocardiography
MH  - Female
MH  - Humans
MH  - Male
MH  - Middle Aged
MH  - Monitoring, Intraoperative/*instrumentation/*methods
MH  - Plethysmography, Impedance
MH  - Prospective Studies
MH  - Reproducibility of Results
MH  - Respiration, Artificial
MH  - Stroke Volume/physiology
MH  - Thermodilution/*methods
MH  - Ventricular Function, Left/physiology
EDAT- 2011/06/04 06:00
MHDA- 2011/09/29 06:00
CRDT- 2011/06/04 06:00
PHST- 2011/06/04 06:00 [entrez]
PHST- 2011/06/04 06:00 [pubmed]
PHST- 2011/09/29 06:00 [medline]
AID - AnnCardAnaesth_2011_14_2_104_81564 [pii]
AID - 10.4103/0971-9784.81564 [doi]
PST - ppublish
SO  - Ann Card Anaesth. 2011 May-Aug;14(2):104-10. doi: 10.4103/0971-9784.81564.