Interatrial block and atrial remodeling assessed using speckle tracking echocardiography

Table 2 Atrial strain and strain rate characteristics

Variable	No ^aIAB (c) (n = 56)	^bpIAB (p) (n = 21)	^caIAB (a) (n = 22)	p ANOVA	p Post Hoc
^dε peak ^eLAc, (%)	− 2.8 (− 3.4 – − 2.1)	−2.9 (− 4.1 – − 1.9)	−1.9 (− 2.5 – − 0.68)	0.003	c vs. a < 0.001
^dε peak ^eLAc, (%)	− 2.8 (− 3.4 – − 2.1)	−2.9 (− 4.1 – − 1.9)	−1.9 (− 2.5 – − 0.68)	0.003	p vs. a = 0.011
^fεs LAmax, (%)	18.0 ± 5.5	15.1 ± 3.0	12.7 ± 4.0	< 0.001	c vs. p = 0.020
^fεs LAmax, (%)	18.0 ± 5.5	15.1 ± 3.0	12.7 ± 4.0	< 0.001	c vs. a < 0.001
^gSRa, S^− 1	−2.12 ± 0.57	− 1.20 ± 0.39	− 0.82 ± 0.26	< 0.001	c vs. p < 0.001
					c vs. a = 0.027
					p vs. a = 0.004
^hSRs, S^− 1	1.71 ± 0.27	0.99 ± 0.34	0.62 ± 0.25	< 0.001	c vs. p = 0.003
^hSRs, S^− 1	1.71 ± 0.27	0.99 ± 0.34	0.62 ± 0.25	< 0.001	c vs. a < 0.001
ⁱSREF, S^− 1	− 0.99 ± 0.57	− 0.94 ± 0.48	− 0.58 ± 0.22	0.009	c vs. p 0.003
ⁱSREF, S^− 1	− 0.99 ± 0.57	− 0.94 ± 0.48	− 0.58 ± 0.22	0.009	c vs. a < 0.001

Atrial strain and strain rate echocardiographic characteristics of the sample. Values are presented as mean ± SD or median (interquartile range). ^aIAB interatrial block, ^bpIAB partial interatrial block, ^caIAB advanced interatrial block, ^dε strain, ^eLAc left atrial contraction, ^fεs LAmax strain in LA reservoir phase, ^gSRa strain rate in LA booster pump function phase, ^hSRs strain rate in LA reservoir phase, ⁱSREF strain rate LA in early ventricular filling phase

ISSN: 1471-2261