Table 4
Open in new tab

LV longitudinal strain quantification with and without AC

 LV longitudinal strain (%)
NoACAC
Observer 1Observer 2Observer 1Observer 2
Apical 4-chamber view
(n = 44)		Mean ± SD−16 ± 6−15 ± 5−16 ± 6−15 ± 6
Median (25–75%)−17 (−20 to −12)−16 (−18 to −11)−17 (−20 to −12)−16 (−19 to −12)
Min–maxa−25 to 0−23 to 0−28 to 0−26 to 0
Bias (95% LoA)−1 (−4, 3)−1 (−4, 3)
ICC, absolute agreement0.950.96
P = 0.70
Apical 2-chamber view
(n = 37)		Mean ± SD−14 ± 5−14 ± 5−14 ± 6−14 ± 6
Median (25%–75%)−16 (−18 to −10)−15 (−18 to −11)−17 (−19 to −10)−16 (−19 to −10)
Min–maxa−23 to −4−22 to 0−22 to 0−24 to 0
Bias (95% LoA)−0 (−4, 3)−0 (−3, 3)
ICC, absolute agreement0.940.96
P = 0.41
Apical long-axis view
(n = 33)		Mean ± SD−13 ± 6−13 ± 5−13 ± 6−13 ± 6
Median (25%–75%)−15 (−17 to −7)−15 (−17 to −9)−16 (−17 to −8)−14 (−18 to −8)
Min–maxa−22 to 0−22 to 0−26 to 0−23 to 0
Bias (95% LoA)0 (−3, 4)0 (−5, 5)
ICC, absolute agreement0.960.92
P = 0.23
 LV longitudinal strain (%)
NoACAC
Observer 1Observer 2Observer 1Observer 2
Apical 4-chamber view
(n = 44)		Mean ± SD−16 ± 6−15 ± 5−16 ± 6−15 ± 6
Median (25–75%)−17 (−20 to −12)−16 (−18 to −11)−17 (−20 to −12)−16 (−19 to −12)
Min–maxa−25 to 0−23 to 0−28 to 0−26 to 0
Bias (95% LoA)−1 (−4, 3)−1 (−4, 3)
ICC, absolute agreement0.950.96
P = 0.70
Apical 2-chamber view
(n = 37)		Mean ± SD−14 ± 5−14 ± 5−14 ± 6−14 ± 6
Median (25%–75%)−16 (−18 to −10)−15 (−18 to −11)−17 (−19 to −10)−16 (−19 to −10)
Min–maxa−23 to −4−22 to 0−22 to 0−24 to 0
Bias (95% LoA)−0 (−4, 3)−0 (−3, 3)
ICC, absolute agreement0.940.96
P = 0.41
Apical long-axis view
(n = 33)		Mean ± SD−13 ± 6−13 ± 5−13 ± 6−13 ± 6
Median (25%–75%)−15 (−17 to −7)−15 (−17 to −9)−16 (−17 to −8)−14 (−18 to −8)
Min–maxa−22 to 0−22 to 0−26 to 0−23 to 0
Bias (95% LoA)0 (−3, 4)0 (−5, 5)
ICC, absolute agreement0.960.92
P = 0.23

aLongitudinal strain between −3.5% and 0% was assigned value 0% by the software.

Table 4
Open in new tab

LV longitudinal strain quantification with and without AC

 LV longitudinal strain (%)
NoACAC
Observer 1Observer 2Observer 1Observer 2
Apical 4-chamber view
(n = 44)		Mean ± SD−16 ± 6−15 ± 5−16 ± 6−15 ± 6
Median (25–75%)−17 (−20 to −12)−16 (−18 to −11)−17 (−20 to −12)−16 (−19 to −12)
Min–maxa−25 to 0−23 to 0−28 to 0−26 to 0
Bias (95% LoA)−1 (−4, 3)−1 (−4, 3)
ICC, absolute agreement0.950.96
P = 0.70
Apical 2-chamber view
(n = 37)		Mean ± SD−14 ± 5−14 ± 5−14 ± 6−14 ± 6
Median (25%–75%)−16 (−18 to −10)−15 (−18 to −11)−17 (−19 to −10)−16 (−19 to −10)
Min–maxa−23 to −4−22 to 0−22 to 0−24 to 0
Bias (95% LoA)−0 (−4, 3)−0 (−3, 3)
ICC, absolute agreement0.940.96
P = 0.41
Apical long-axis view
(n = 33)		Mean ± SD−13 ± 6−13 ± 5−13 ± 6−13 ± 6
Median (25%–75%)−15 (−17 to −7)−15 (−17 to −9)−16 (−17 to −8)−14 (−18 to −8)
Min–maxa−22 to 0−22 to 0−26 to 0−23 to 0
Bias (95% LoA)0 (−3, 4)0 (−5, 5)
ICC, absolute agreement0.960.92
P = 0.23
 LV longitudinal strain (%)
NoACAC
Observer 1Observer 2Observer 1Observer 2
Apical 4-chamber view
(n = 44)		Mean ± SD−16 ± 6−15 ± 5−16 ± 6−15 ± 6
Median (25–75%)−17 (−20 to −12)−16 (−18 to −11)−17 (−20 to −12)−16 (−19 to −12)
Min–maxa−25 to 0−23 to 0−28 to 0−26 to 0
Bias (95% LoA)−1 (−4, 3)−1 (−4, 3)
ICC, absolute agreement0.950.96
P = 0.70
Apical 2-chamber view
(n = 37)		Mean ± SD−14 ± 5−14 ± 5−14 ± 6−14 ± 6
Median (25%–75%)−16 (−18 to −10)−15 (−18 to −11)−17 (−19 to −10)−16 (−19 to −10)
Min–maxa−23 to −4−22 to 0−22 to 0−24 to 0
Bias (95% LoA)−0 (−4, 3)−0 (−3, 3)
ICC, absolute agreement0.940.96
P = 0.41
Apical long-axis view
(n = 33)		Mean ± SD−13 ± 6−13 ± 5−13 ± 6−13 ± 6
Median (25%–75%)−15 (−17 to −7)−15 (−17 to −9)−16 (−17 to −8)−14 (−18 to −8)
Min–maxa−22 to 0−22 to 0−26 to 0−23 to 0
Bias (95% LoA)0 (−3, 4)0 (−5, 5)
ICC, absolute agreement0.960.92
P = 0.23

aLongitudinal strain between −3.5% and 0% was assigned value 0% by the software.

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