Table 2.
LV parameter | Slice | Exam 1 | Exam 2 | Mean difference (SD) | ICC | SEM | SDC |
---|---|---|---|---|---|---|---|
Ecc, % |
Base |
−14.2 |
−13.9 |
−0.2 (1.6) |
0.74** |
0.8 |
2.3 |
Mid |
−14.7 |
−15.2 |
0.5 (1.9) |
0.73** |
1.0 |
2.7 |
|
Apex |
−15.6 |
−15.01 |
−0.6 (1.2) |
0.89** |
0.4 |
1.1 |
|
Err, % |
Base |
18.4 |
19.1 |
−0.7(5.3) |
0.2 |
4.7 |
13.1 |
Mid |
16.6 |
17.1 |
0.5 (4.1) |
0.58* |
2.7 |
7.4 |
|
Apex |
15.1 |
13.9 |
1.2 (6.8) |
0.3 |
5.7 |
15.8 |
|
Lambda 1, % |
Base |
23.1 |
24.0 |
−1.1 (5.2) |
0.4* |
4.0 |
11.2 |
Mid |
22.8 |
23.1 |
0.3 (5.2) |
0.6** |
3.3 |
9.1 |
|
Apex |
21.2 |
23.2 |
2.04 (7.2) |
0.47* |
5.2 |
14.5 |
|
Lambda 2, % |
Base |
−16.1 |
−16.6 |
0.5 (1.9) |
0.66** |
1.1 |
3.1 |
Mid |
−17.2 |
−17.6 |
0.4 (2.3) |
0.5* |
1.6 |
4.5 |
|
Apex |
−18.7 |
−19.4 |
0.7 (2.8) |
0.47* |
2.0 |
5.6 |
|
Angle, α |
Base |
11.4 |
10.0 |
1.3 (4.8) |
0.05 |
4.7 |
13.0 |
Mid |
13.3 |
12.1 |
1.1 (5.6) |
0.05 |
5.5 |
15.1 |
|
Apex |
16.2 |
17.2 |
−0.9 (6.6) |
0.06 |
6.4 |
17.7 |
|
Time to peak Ecc (ms) |
Mid |
295.8 |
306 |
−10.4 (81) |
0.4 * |
62.7 |
173.8 |
SSR (1/s) |
Mid |
−79.6 |
−85.1 |
5.4 (15.7) |
0.58* |
10.2 |
28.2 |
EDSR (1/s) | Mid | 72.2 | 70.8 | 1.4 (43.7) | 0.35* | 35.2 | 97.6 |
SSR systolic circumferential strain rate, EDSR Early diastolic circumferential strain rate.
SD standard deviation of mean difference, ICC Intra-class correlation coefficient, SEM standard error of measurement, SDC Smallest detectable change.
** = p <0.0001, * = p <0.05.