Table 3.
Reproducibility of right atrial strain assessment.
| Mean Difference ± SD (%) | CoV (%) | ICC (95% CI) | |
|---|---|---|---|
| Intraobserver | |||
| RA Es | −2.05 ± 3.84 | 13.73 | 0.95 (0.86–0.98) |
| RA Ee | −0.17 ± 2.23 | 16.95 | 0.97 (0.94–0.99) |
| RA Ea | −1.98 ± 4.58 | 30.84 | 0.83 (0.62–0.92) |
| RA SRs | −0.08 ± 0.32 | 26.02 | 0.82 (0.63–0.92) |
| RA SRe | 0.02 ± 0.17 | 31.48 | 0.91 (0.80–0.96) |
| RA SRa | 0.08 ± 0.29 | 25.66 | 0.85 (0.69–0.93) |
| Interobserver | |||
| RA Es | 1.67 ± 6.23 | 23.86 | 0.87 (0.72–0.94) |
| RA Ee | 1.22 ± 4.14 | 33.15 | 0.88 (0.74–0.94) |
| RA Ea | 0.44 ± 3.44 | 25.26 | 0.93 (0.84–0.97) |
| RA SRs | 0.01 ± 0.29 | 25.44 | 0.84 (0.66–0.93) |
| RA SRe | 0.02 ± 0.20 | 37.04 | 0.88 (0.74–0.94) |
| RA SRa | −0.03 ± 0.29 | 27.10 | 0.86 (0.70–0.93) |
SD = standard deviation, CoV = coefficient of variation, ICC = intraclass correlation coefficient, RA Es/e/a and SRs/e/a = right atrial reservoir, conduit and booster pump strain, and associated strain rate.