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- W3025327100 abstract "Abstract Cardiac output during cardiac catheterization is often estimated using the modified Fick method (CO Fick ). In this proof-of-concept, prospective non-randomized study carried out in a single academic healthcare centre, we examined whether replacing CO Fick in the Gorlin formula with Cheetah-NICOM monitor cardiac output (CO Cheetah ) could produce an accurate and precise estimate of aortic valve area in patients with severe aortic stenosis. In twenty-six subjects, CO Fick and CO Cheetah were obtained concurrently. A spot and 3-minute running average of CO Cheetah was used. Bland and Altman analysis was used to derive bias, 95% limits of agreement (LOA) and confidence intervals (CI). The mean difference (bias) between AVA Cheetah (average) and AVA Fick was 0.11 cm 2 and the 95% LOA were ±0.42 cm 2 . The 95% CI of the bias was 0.02–0.2 cm 2 . The bias and 95% LOA of AVA Cheetah (spot value) were 0.14 ± 0.42cm 2 , with a 95% CI of 0.06–0.23 cm 2 . No proportional bias was present. AVA Cheetah thus appears to be a reasonably accurate measure of AVA in patients with severe aortic stenosis compared to AVA Fick measured using a modified Fick CO. However, the limits of agreement were not narrow enough to consider AVA Cheetah and AVA Fick interchangeable." @default.
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- W3025327100 date "2020-05-12" @default.
- W3025327100 modified "2023-09-23" @default.
- W3025327100 title "A Pilot Study Comparing Aortic Valve Area Estimates Derived from Fick Cardiac Output with Estimates Based on Cheetah-NICOM Cardiac Output" @default.
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- W3025327100 doi "https://doi.org/10.1038/s41598-020-64753-3" @default.
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