Study Shows that Cardiac Output Measured by the Multi-Beat Analysis (MBA) Algorithm Correlates with the Pulmonary Artery Catheter in Post-Cardiac Surgery Patients with Arrythmia

A prospective study performed at Wake Forest Baptist Medical Center assessed the agreement between cardiac output from a pulmonary artery catheter (PAC) and the novel Multi-Beat Analysis (MBA) method in post-cardiac surgery patients.  The MBA method which is used by Retia’s Argos monitor, correlated well with the PAC across 79 patients. In particular, a subgroup analysis of 26 patients with arrhythmia showed a 35.4% percentage error between the two methods, which is well below the industry standard.  Analysis of multiple beats allows the MBA algorithm to extract information embedded in inter-beat variations and provide accuracy during arrhythmia. With this finding, clinicians now have a reliable, easy-to-use, and minimally invasive method to measure cardiac output in patients where arrythmia is common. 

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