Diagnostic accuracy of left atrial function and strain for differentiating between acute and chronic myocardial infarction

Table 3 LA volumetric and deformation parameters assessed by CMR-FT

	AMI(n = 36)	CMI(n = 29)	Control(n = 30)	P1values	P2values	P3values
LA volumetric parameters
Vmax, ml	33.95 ± 1.95	46.94 ± 3.0	39.45 ± 1.47	0.000	0.047	0.017
Vpre-a, ml	28.94 ± 1.69	42.36 ± 2.78	32.72 ± 1.32	0.000	0.376	0.003
Vmin, ml	22.17 ± 1.44	37.92 ± 2.69	25.28 ± 1.26	0.000	0.513	0.000
LA reservoir function
EF-total	34.70 ± 1.97	19.36 ± 1.99	36.36 ± 1.19	0.000	1.000	0.000
εs, %	24.18 ± 1.80	14.27 ± 2.03	34.63 ± 1.33	0.001	0.000	0.000
SRs, s-1	1.23 ± 0.089	0.75 ± 0.10	1.57 ± 0.10	0.005	0.029	0.000
LA conduit function
EF-passive	14.81 ± 1.41	9.70 ± 1.13	17.16 ± 0.67	0.011	0.359	0.000
εe, %	13.01 ± 1.38	6.47 ± 1.42	18.89 ± 1.07	0.004	0.003	< 0.0001
SRe, s-1	-1.37 ± 0.156	-0.64 ± 0.10	-1.80 ± 0.15	0.005	0.088	0.000
LA booster pump function
EF-active	23.49 ± 1.60	10.78 ± 1.57	23.22 ± 1.15	0.000	1.000	0.000
εa, %	11.17 ± 0.75	7.79 ± 0.98	15.73 ± 0.87	0.032	0.000	0.000
SRa, s-1	-1.52 ± 0.098	-0.85 ± 0.12	-1.98 ± 0.14	0.002	0.017	0.000

P1 for AMI versus CMI. P2 for AMI versus normal controls. P3 for CMI values versus normal controls. Bold values indicate statistical significance. There was significant difference among three groups about LA strain and strain rate

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