Left ventricular longitudinal wall fractional shortening accurately predicts longitudinal strain in critically ill patients with septic shock

Annals of Intensive Care

Table 2 Linear regression (including 95% CI), Pearson’s product moment correlation coefficient, MSE, bias ± LOA between LVLS, MAPSE and LV-LWFS

	Pearson’s r (95% CI)	MSE (%)	Bias (LOA, %)
y = 1.086x + 2.012	0.89 (0.83–0.92)	5.8	− 3.0 (± 4.8)
y = 1.100x + 3.296	0.81 (0.74–0.87)	9.1	NA*

*Bland–Altman analysis was not possible since MAPSE and LVLS are measured in different units
CI confidence interval, MSE mean square error, LOA limits of agreement, LVLS left ventricle longitudinal strain, MAPSE mitral annular plane systolic excursion, LV-LWFS left ventricle-longitudinal wall fractional shortening