Comparison of transthoracic electrical bioimpedance cardiac output measurement with thermodilution method in post coronary artery bypass graft patients.

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dc.contributor.authorSharma, Vikas
dc.contributor.authorSingh, Ajmer
dc.contributor.authorKansara, Bhuvnesh
dc.contributor.authorKarlekar, Anil
dc.date.accessioned2012-07-17T10:07:17Z
dc.date.available2012-07-17T10:07:17Z
dc.date.issued2011-05
dc.description.abstractTransthoracic 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.en_US
dc.identifier.citationSharma Vikas, Singh Ajmer, Kansara Bhuvnesh, Karlekar Anil. Comparison of transthoracic electrical bioimpedance cardiac output measurement with thermodilution method in post coronary artery bypass graft patients. Annals of Cardiac Anaesthesia. 2011 May; 14(2): 104-110.en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/139582
dc.language.isoenen_US
dc.source.urihttps://www.annals.in/article.asp?issn=0971-9784;year=2011;volume=14;issue=2;spage=104;epage=110;aulast=Sharmaen_US
dc.subjectCardiac outputen_US
dc.subjectoff-pump coronary artery bypass graft surgeryen_US
dc.subjectthermodilutionen_US
dc.subjecttransthoracic electrical bioimpedanceen_US
dc.subject.meshAdult
dc.subject.meshAged
dc.subject.meshAlgorithms
dc.subject.meshCardiac Output --physiology
dc.subject.meshCoronary Artery Bypass, Off-Pump
dc.subject.meshEchocardiography
dc.subject.meshElectric Impedance --diagnostic use
dc.subject.meshElectrocardiography
dc.subject.meshFemale
dc.subject.meshHumans
dc.subject.meshIntensive Care
dc.subject.meshMale
dc.subject.meshMiddle Aged
dc.subject.meshMonitoring, Intraoperative --instrumentation
dc.subject.meshMonitoring, Intraoperative --methods
dc.subject.meshPlethysmography, Impedance
dc.subject.meshProspective Studies
dc.subject.meshReproducibility of Results
dc.subject.meshRespiration, Artificial
dc.subject.meshStroke Volume --physiology
dc.subject.meshThermodilution --methods
dc.subject.meshVentricular Function, Left --physiology
dc.titleComparison of transthoracic electrical bioimpedance cardiac output measurement with thermodilution method in post coronary artery bypass graft patients.en_US
dc.typeArticleen_US
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