Publications by authors named "Cassie Walls"
Article Synopsis
- - Accurate assessment of cardiac output (CO) is crucial for evaluating aortic valve area (AVA), and a portable facemask device has improved the measurement of CO through direct continuous oxygen consumption (VO2) while reducing the complexities associated with traditional methods.
- - A study with 17 patients compared CO obtained via direct continuous VO2, assumed VO2, and thermodilution (TD), revealing poor correlation between these methods, which may indicate inconsistencies in CO and AVA estimations.
- - Results showed that while direct continuous VO2 measurements provided highly reproducible and reliable CO values, the discrepancies between it and other methods could have significant implications for cardiac assessments in clinical settings.
Background: Accurate assessment of Cardiac Output (CO) is a critical measurement in the calculation of aortic valve area (AVA). Due to the known inaccuracy of estimated Fick calculations, many measure thermodilution (TD) CO as well due to previous studies showing better correlation with the gold standard direct CO. Previous studies showed suboptimal correlation between both methods.
View Article and Find Full Text PDFBackground: Accurate assessment of cardiac output (CO) is essential for the hemodynamic assessment of valvular heart disease. Estimation of oxygen consumption (VO2) and thermodilution (TD) are employed in many cardiac catheterization laboratories (CCL) given the historically cumbersome nature of direct continuous VO2 measurement, the "gold standard" for this technique. A portable facemask device simplifies the direct continuous measurement of VO2, allowing for relatively rapid and continuous assessment of CO.
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