Cardiovascular Ultrasound

Table 2 Left atrial strain measured by different observers (mean ± SD, n = 64)

From: Left atrial strain reproducibility using vendor-dependent and vendor-independent software

	Sct(%)	Scd(%)	Sr(%)
VSS_LV
A1	−11.52 ± 2.69	−16.96 ± 7.28	28.49 ± 7.82
A2	− 11.14 ± 2.37^*	−16.71 ± 7.10	27.85 ± 7.65^*
B	− 11.12 ± 2.60^#	−16.63 ± 7.24	27.75 ± 7.77
Mean	− 11.26 ± 2.46	− 16.77 ± 7.06	28.03 ± 7.58
P	0.004	0.244	0.007
VIS_LV
A1	−14.54 ± 3.72	−23.35 ± 10.63	37.89 ± 11.89
A2	−14.64 ± 3.67	−22.81 ± 9.95	37.46 ± 10.83
B	−15.14 ± 3.99	−24.21 ± 10.58	39.35 ± 11.58
Mean	− 14.77 ± 3.59	− 23.17 ± 10.33	38.23 ± 10.99
P	0.610	0.109	0.261
VIS_LA
A1	− 14.90 ± 4.13	− 23.72 ± 10.83	38.62 ± 12.19
A2	−14.72 ± 4.03	− 23.73 ± 10.57	38.45 ± 11.69
B	−14.77 ± 3.83	− 24.36 ± 10.95	39.13 ± 11.77
Mean	−14.80 ± 3.88	− 23.94 ± 10.49	38.73 ± 11.56
P	0.264	0.967	0.607

When using VSS_LV, there were significant differences in intra-observer measurement of Sct and Sr, and inter-observer measurement of Sct (p < 0.05). Comparing VIS_LV and VIS_LA, there were no significant differences in intra-observer or inter-observer measurements (p > 0.05)
A1: First measurement made by observer A
A2: Second measurement made by observer A 1 month later
B: First measurement made by observer B
^#Inter-observer comparison of VSS_LV, VIS_LV, and VIS_LA (p < 0.05)
^*Intra-observer comparison of VSS_LV, VIS_LV, and VIS_LA (p < 0.05)

Back to article page

ISSN: 1476-7120

Contact us

General enquiries: journalsubmissions@springernature.com