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Measuring Cardiac Output with Echocardiography Made Easy - POCUS 101

SOLVED: A medical researcher wanted to compare two different methods (A and B) for measuring cardiac output (L/min). Method A is the "gold standard" but is invasive (involves inserting a catheter into the main heart artery). Method B is less accurate but is non-invasive. To control for differences between persons, both methods are used on each person participating in the study. This allows measurements to be directly compared for each method, per individual. Cardiac output for 14 subjects was me