Analysis of factors affecting the variability of fick versus indicator dilution measurements of cardiac output
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Cited by (121)
Comparison of Accuracy of Estimation of Cardiac Output by Thermodilution Versus the Fick Method Using Measured Oxygen Uptake
2022, American Journal of CardiologyCitation Excerpt :The TD method is often performed in concert with indirect Fick Q̇C measurements, and TD recently was shown in a large observational cohort to predict mortality more accurately as compared with the indirect Fick method.15 However, there are few previous studies comparing the accuracy of the TD method versus the gold standard Direct Fick method, where agreement between the 2 methods demonstrated acceptable correlation (R > 0.8),16–18 including in a subset of patients with pulmonary hypertension, severe tricuspid regurgitation and low Q̇C.18 This larger study cohort contrasts with these findings indicating the potential error of TD measurements when compared with the Fick method.
Resting Oxygen Consumption and Heart Failure: Importance of Measurement for Determination of Cardiac Output With the Use of the Fick Principle
2020, Journal of Cardiac FailureCitation Excerpt :In that study, Td CO better predicted mortality.33 Given the importance of CO in the clinical decision making and management of patients with HF, the potential inaccuracy of Td CO introduced by TR and low CO, both of which are often present in end-stage HF, remains a concern.2–5 In addition, it does not appear that using Td-derived VO2 is preferential because it also overestimated VO2 in this HF population.
Pediatric Interventional Cardiovascular Magnetic Resonance
2018, Cardiovascular Magnetic Resonance: A Companion to Braunwald’s Heart DiseaseCatheterisation as a tool in the diagnosis of pulmonary hypertension
2017, Revista Colombiana de CardiologiaCardiac Outputs and Shunts
2017, Textbook of Clinical Hemodynamics, Second EditionAdvanced imaging tools rather than hemodynamics should be the primary approach for diagnosing, following, and managing pulmonary arterial hypertension
2015, Canadian Journal of CardiologyCitation Excerpt :Although O2 consumption can be measured accurately, that measurement is cumbersome, and many laboratories use standard tables for an assumed value instead of direct measurements. Such estimation may cause an error of as much as 40% in the assessment of CO.9 Most laboratories now use thermodilution based on an indicator dilution methodology to measure CO.10 When compared with the direct Fick method, thermodilution measurements show little bias, with a mean difference of 0.1 L/min and a confidence interval of 0.2 L/min, corresponding to excellent accuracy even in the presence of tricuspid regurgitation, but limits of agreement are ± 1 L/min, corresponding to moderate precision.11 Clinically significant information is gained from RHC that helps guide decisions.
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Dr. Hillis is an Established Investigator of the American Heart Association, Dallas, Texas.