Journal of the American College of Cardiology
Heart Rhythm Disorders
Efficacy, Safety, and Outcomes of Catheter Ablation of Atrial Fibrillation in Patients With Heart Failure With Preserved Ejection Fraction
Tomoko Machino-Ohtsuka, Yoshihiro Seo, Tomoko Ishizu, Akinori Sugano, Akiko Atsumi, Masayoshi Yamamoto, Ryo Kawamura, Takeshi Machino, Kenji Kuroki, Hiro Yamasaki, Miyako Igarashi, Yukio Sekiguchi and Kazutaka Aonuma
Table 6
Table 6
Reproducibility of Strain and Strain Rate Measurements
| SISYS | SRSYS | SRIVR | SRE | |
|---|---|---|---|---|
| Intraobserver | ||||
| Correlation coefficient | 0.99 | 0.95 | 0.93 | 0.99 |
| Mean absolute percentage error, % | 7.8 ± 7.7 | 8.1 ± 5.6 | 9.6 ± 6.1 | 5.7 ± 5.1 |
| Interobserver | ||||
| Correlation coefficient | 0.99 | 0.90 | 0.89 | 0.93 |
| Mean absolute percentage error, % | 10.1 ± 13.9 | 10.3 ± 8.5 | 13.2 ± 7.9 | 9.9 ± 7.7 |
SISYS = average of peak LV strain at systole; SRSYS = average of peak LV strain rate at systole; SRIVR = average of peak LV strain rate during isovolumetric relaxation period; SRE = average of peak LV strain rate at early diastole.
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