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Bland-Altman analysis. Bland-Altman agreement plot comparing pulmonary papillary wedge pressure (PCWP) estimated by global peak atrial longitudinal strain (PALS) and invasive PCWP in the 36 patients. Bias (0.1); 95% Limits of agreement (-8.0 to 8.0). (PALS, peak atrial longitudinal strain; PCWP, pulmonary capillary wedge pressure).
