Validation of a new arterial pulse contour-based cardiac output device

Waal, Eric E. C. de; Kalkman, Cor J.; Rex, Steffen; Buhre, W.

doi:10.1097/01.ccm.0000275429.45312.8c

Cited by 107 publications

(41 citation statements)

References 18 publications

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“…Since the APCO system (FloTrac TM /Vigileo TM ) was first introduced in 2004, there have been many reports investigating the accuracy of APCO for a cardiac output monitor [1][2][3][4][5][9][10][11][12]. Results were inconsistent among the reports.…”

Section: Discussioncontrasting

confidence: 46%

“…The accuracy and clinical applicability of this system with the original version of its software (APCO v.1.0 ) was evaluated and its clinical usefulness was demonstrated [1][2][3], but limitations have been reported in severe liver disease patients [4,5]. To address these problems, a newer version of its software (APCO v.3.0 ) was developed.…”

Section: Introductionmentioning

confidence: 99%

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Accuracy of arterial pressure waveform analysis for cardiac output measurement in comparison with thermodilution methods in patients undergoing living donor liver transplantation

et al. 2011

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Section: Discussioncontrasting

confidence: 46%

Section: Introductionmentioning

confidence: 99%

Accuracy of arterial pressure waveform analysis for cardiac output measurement in comparison with thermodilution methods in patients undergoing living donor liver transplantation

et al. 2011

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“…[1][2][3][4][5] Other examples of method-comparisons include arterial pulse contour versus pulmonary artery thermodilution cardiac output and point-of-care versus laboratory testing of blood glucose levels. [6][7][8] The basic indication for a method-comparison study is the need to determine if two methods for measuring the same thing (e.g., body temperature, cardiac output) do so in an equivalent manner. The clinical question is one of substitution: Can one measure X with either Method A or Method B and get the same results?…”

mentioning

confidence: 99%

Design, Analysis, and Interpretation of Method-Comparison Studies

Hanneman

2008

AACN Advanced Critical Care

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Clinicians often need to know if a new method of measurement is equivalent to an established one already in clinical use. This paper reviews the methodology of a method-comparison study to assist the clinician with the conduct and evaluation of such studies. Temperature data from one subject are used to illustrate the procedures. Although one would not make decisions based on the findings from one subject, the large number of paired measurements in the data set permits its use for illustrative purposes. Currently available software eliminates the need for tedious statistical computation, but does not reduce the burden of understanding the concepts underlying a method-comparison study and accurate interpretation of the findings. KeywordsBias; Clinical Measurement; Method-comparison; Precision; Temperature With the rapid development and adoption of critical care technology, clinicians increasingly need to know if the newest technique is equivalent to that in current use. Such a question can be answered with a method-comparison study. For example, when noninvasive infrared thermometers were introduced, a plethora of studies was published reporting comparisons of body temperature values when measured simultaneously with the infrared thermometer and such established thermal sensors as the pulmonary artery catheter. [1][2][3][4][5] Other examples of method-comparisons include arterial pulse contour versus pulmonary artery thermodilution cardiac output and point-of-care versus laboratory testing of blood glucose levels. [6][7][8] The basic indication for a method-comparison study is the need to determine if two methods for measuring the same thing (e.g., body temperature, cardiac output) do so in an equivalent manner. The clinical question is one of substitution: Can one measure X with either Method A or Method B and get the same results?In this paper the author discusses, and illustrates with two examples, the design, analysis and interpretation of a method-comparison study. The examples use partial data from a published report of in vitro and in vivo testing of multiple methods of measuring core body temperature in a pre-clinical critical care laboratory setting. 9 Clinicians may wish to conduct a method-comparison study before adopting new technology in practice. This paper provides information on how to do so. At the very least, the information should help clinicians interpret the findings of method-comparison studies encountered in the literature. NIH Public Access Method-Comparison MethodologyA review of terminology precedes discussion of methodology as statistical reporting terms are used inconsistently in the literature. 10 "Accuracy" and "precision" are used often when "bias" and "repeatability" are the properties being assessed. Accuracy is the degree to which an instrument measures the real value of a variable and is assessed by comparing the measurement method with a gold standard that has been calibrated to be highly accurate. In a methodcomparison study, however, the investigator is comparing a l...

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“…Mayer et al measured CI in 40 patients undergoing elective cardiac surgery and analyzed 244 data pairs and found the high percentage error of 46% [7]. de Waal and colleagues also compared ITD and FloTrac and found a percentage error of 33% [26]. Lorsomradee et al compared FloTrac with continuous thermo dilution method (CCO) and found that pulse contour analysis was able to reflect CO measured with CCO technique in patients undergoing uncomplicated CABG [27].…”

Section: Citationmentioning

confidence: 99%

An Observational Comparative Study of Cardiac Index Estimated By FloTrac and Intermittent Thermo Dilution in Off-Pump Coronary Artery Bypass Grafting

Singla¹,

Sodhi²,

Shrivastava³

2015

Primary Health Care

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Objective: The purpose of this study was to determine the correlation between cardiac index (CI) measurements made using intermittent thermodilution (ITD) technique by pulmonary artery catheter (PAC) and arterial pulse-contour analysis by FloTrac.Design: Prospective observational study. Setting:Cardiac surgery unit in a 350 bedded tertiary care hospital in India. Participants: 31 adult patients undergoing elective off-pump coronary artery bypass grafting (OPCABG) Interventions: CI measurements performed by the two different methods at six time points during the surgery (before skin incision, during grafting of left anterior descending artery, obtuse marginal artery and right coronary/ posterior descending artery, after protamine administration and after shifting the patient to recovery room). Measurements and results:The techniques a weak correlation at all six time points during the OPCABG. The mean bias of 0.85 L/min/m2 and precision of 0.55 was found in the study population. The percentage error calculated using Critchley s criteria was found to be 46%. Conclusion:CI measurements obtained using FloTrac showed a limited correlation with those acquired by ITD technique at different stages of OPCABG. Further studies are required in other patient populations and clinical situations.

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Validation of a new arterial pulse contour-based cardiac output device

Abstract: Our results showed that VigileoCO enables clinically acceptable assessment of cardiac output in postbypass closed-chest conditions and during stable conditions in the intensive care unit.

Cited by 107 publications

References 18 publications

Accuracy of arterial pressure waveform analysis for cardiac output measurement in comparison with thermodilution methods in patients undergoing living donor liver transplantation

Accuracy of arterial pressure waveform analysis for cardiac output measurement in comparison with thermodilution methods in patients undergoing living donor liver transplantation

Design, Analysis, and Interpretation of Method-Comparison Studies

An Observational Comparative Study of Cardiac Index Estimated By FloTrac and Intermittent Thermo Dilution in Off-Pump Coronary Artery Bypass Grafting

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