Comparison of simultaneous estimation of cardiac output by four techniques in patients undergoing off-pump coronary artery bypass surgery--a prospective observational study.

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dc.contributor.authorChakravarthy, Muralien_US
dc.contributor.authorPatil, T Aen_US
dc.contributor.authorJayaprakash, Ken_US
dc.contributor.authorKalligudd, Praveenen_US
dc.contributor.authorPrabhakumar, Dattatreyaen_US
dc.contributor.authorJawali, Viveken_US
dc.date.accessioned2007-07-25en_US
dc.date.accessioned2009-05-27T04:04:27Z
dc.date.available2007-07-25en_US
dc.date.available2009-05-27T04:04:27Z
dc.date.issued2007-07-25en_US
dc.description.abstractWe prospectively compared four techniques of cardiac output measurement: bolus thermodilution cardiac output (TDCO), continuous cardiac output (CCO), pulse contour cardiac output (PiCCO), and Flowtrac (FCCO), simultaneously in fifteen patients undergoing off-pump coronary artery bypass grafting (OPCAB). All the patients received pulmonary artery catheter (capable of measuring both bolus thermodilution cardiac output and CCO), PiCCO arterial cannula in the left and FCCO in the right femoral artery. Cardiac indices (CI) were obtained every fifteen minutes by using all the four techniques. TDCO was treated as 'control' and the rest were treated as 'test' values. Interchangeability of techniques with TDCO was assessed by Bland and Altman plotting and mountain plot. Four hundred and thirty eight sets of data were obtained from fifteen patients. The values of cardiac output varied between 1 to 6.9 L/min. We found that the values of all the techniques were interchangeable. At certain times, the values of CI measured by both PiCCO and FCCO appeared erratic. The values of CI measured simultaneously appeared in the following descending order of accuracy; TDCO>CCO>FCCO>PiCCO (the % times TDCO correlated with CCO, FCCO, PiCCO was 93, 86 and 80 respectively). The bias and precision (in L/min) for CCO were 0.03, 0.06, PiCCO 0.13, 0.1 and flowtrac 0.15, 0.04 respectively suggesting interchangeability. We conclude that the cardiac output measured by CCO technique and the pulse contour as measured by PiCCO and FCCO were interchangeable with TDCO more than 80% of the times.en_US
dc.description.affiliationWockhardt Heart Institute, Bangalore 560052, Karnataka, India. chakravarthy@vsnl.comen_US
dc.identifier.citationChakravarthy M, Patil TA, Jayaprakash K, Kalligudd P, Prabhakumar D, Jawali V. Comparison of simultaneous estimation of cardiac output by four techniques in patients undergoing off-pump coronary artery bypass surgery--a prospective observational study. Annals of Cardiac Anaesthesia. 2007 Jul; 10(2): 121-6en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/1404
dc.language.isoengen_US
dc.source.urihttps://www.annals.inen_US
dc.subject.meshCardiac Outputen_US
dc.subject.meshCatheterization, Swan-Ganzen_US
dc.subject.meshCoronary Artery Bypass, Off-Pumpen_US
dc.subject.meshFemaleen_US
dc.subject.meshHeart Function Testsen_US
dc.subject.meshHumansen_US
dc.subject.meshMaleen_US
dc.subject.meshMonitoring, Intraoperative --instrumentationen_US
dc.subject.meshProspective Studiesen_US
dc.subject.meshPulse --instrumentationen_US
dc.subject.meshReproducibility of Resultsen_US
dc.subject.meshThermodilution --methodsen_US
dc.titleComparison of simultaneous estimation of cardiac output by four techniques in patients undergoing off-pump coronary artery bypass surgery--a prospective observational study.en_US
dc.typeComparative Studyen_US
dc.typeJournal Articleen_US
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