Differences in Direct Fick and Thermodilution Measurements of Cardiac Output: Impact on Pulmonary Hypertension Classification

Direct Fick (DF) and bolus thermodilution (TD) are endorsed by pulmonary hypertension (PH) guidelines to measure cardiac output. In contemporary practice, agreement between methods is unknown, as are the diagnostic consequences of disagreement. We sought to evaluate the frequency and degree of disagreements between cardiac output measurement techniques and assess their impact on the hemodynamic assessment of PH. This was a single-center study that included 182 patients who had cardiac …