Table 3.

The peak segmental systolic longitudinal strain of endocardial, middle and epicardial layers ($\overline{x}\pm \mathrm{s}$)

Segmental LV wall		Endocardial (%)			Middle (%)			Epicardial (%)
		Preoperative	Postoperative	P-value	Preoperative	Postoperative	P-value	Preoperative	Postoperative	P-value
Apical 4-CH view	Lateral	−15.38 ± 7.90	−8.55 ± 6.58	<0.001	−12.64 ± 6.77	−6.70 ± 5.42	<0.001	−10.61 ± 5.99	−5.32 ± 4.62	<0.001
	Septum	−13.95 ± 7.32	−10.77 ± 7.19	0.026	−11.27 ± 6.15	−9.01 ± 6.08	0.054	−9.25 ± 5.33	−7.71 ± 5.29	0.119
Apical 3-CH view	Anteroseptum	−15.75 ± 7.72	−8.03 ± 7.10	<0.001	−12.28 ± 6.28	−6.35 ± 5.89	<0.001	−9.65 ± 5.26	−5.13 ± 5.00	<0.001
	Posterior	−17.33 ± 6.88	−10.97 ± 8.21	<0.001	−14.01 ± 6.05	−8.84 ± 6.87	<0.001	−11.46 ± 5.44	−7.21 ± 5.88	0.001
Apical 2-CH view	Anterior	−15.49 ± 7.07	−7.51 ± 7.46	<0.001	−12.55 ± 6.42	−5.85 ± 6.16	<0.001	−10.31 ± 5.96	−4.64 ± 5.20	<0.001
	Inferior	−17.34 ± 7.38	−12.90 ± 8.69	0.009	−13.89 ± 6.26	−10.40 ± 7.22	0.013	−11.18 ± 5.44	−8.49 ± 6.15	0.020