Table 3.
Test-retest reproducibility results for 2D KBR and 2D echocardiographic RV metrics
| Variable | Intraobserver |
Interobserver |
||||
|---|---|---|---|---|---|---|
| ICC | COV (%) | RD (%) | ICC | COV (%) | RD (%) | |
| 2D KBR | ||||||
| RV EDV | 0.985 | 3.0 | 4.2 | 0.986 | 3.9 | 5.5 |
| RV ESV | 0.987 | 4.3 | 6.1 | 0.960 | 7.7 | 10.9 |
| RV SV | 0.953 | 8.3 | 11.7 | 0.856 | 11.7 | 16.5 |
| RV EF | 0.919 | 6.4 | 9.0 | 0.758 | 10.5 | 14.8 |
| 2DE | ||||||
| RV EDA | 0.885 | 9.0 | 12.7 | 0.394 | 25.0 | 35.4 |
| RV ESA | 0.931 | 9.3 | 13.2 | 0.440 | 31.0 | 43.9 |
| RV FAC | 0.784 | 18.1 | 25.6 | 0.619 | 20.8 | 29.4 |
COV, Coefficient of variation; EDA, end-diastolic area; EDV, end-diastolic volume; EF, ejection fraction; ESA, end-systolic area; ESV, end-systolic volume; ICC, intraclass correlation coefficient; RD, relative difference; SV, stroke volume.