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Fig. 2 | BMC Anesthesiology

Fig. 2

From: Quantification of left ventricular ejection fraction and cardiac output using a novel semi-automated echocardiographic method: a prospective observational study in coronary artery bypass patients

Fig. 2

A Ejection fraction determined by transthoracic biplane AutoEF and TOE using the modified Simpson’s method. Box-and-whiskers plots show the first (bottom), second (inner line indicating median), and third (top) quartile. The whiskers represent the limits of 1.5 times the interquartile range. Outliers are depicted as circles below and above these limits. * p < 0.01. B Linear correlation of biplane EF determined by AutoEF and TOE using the modified Simpson’s method (r = 0.38, p < 0.01). Solid line represents the regression curve, dashed lines the mean confidence interval. C Bland–Altman plot for comparison of EF by biplane AutoEF and TOE using the modified Simpson’s method. Bias: -12.6%, 95%LOA: -36.5 — 11.3%. Solid line represents bias, dashed lines show the 95% limits of agreement (95%LOA). Data show a systematic EF underestimation by AutoEF. EF: ejection fraction, TOE: transoesophageal echocardiography

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BMC Anesthesiology

ISSN: 1471-2253

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