Table 3.
Comparison of left atrial function and strain between the PAF and control groups.
| PAF (n = 106) | Control (n = 20) | P value | |
|---|---|---|---|
| LAVI (mL/m2) | |||
| LAVImax | 43.6 ± 17.6 | 35.6 ± 18.0 | 0.01 |
| LAVIpre-ac | 34.6 ± 15.4 | 26.1 ± 16.4 | 0.002 |
| LAVImin | 23.9 ± 14.5 | 17.6 ± 16.9 | 0.004 |
| Reservoir function | |||
| Total LAEF (%) | 48.0 ± 10.7 | 55.4 ± 13.1 | 0.004 |
| Total LA strain (%) | 22.3 ± 7.6 | 29.3 ± 10.2 | < 0.0001 |
| SRt (s−1) | 1.1 ± 0.4 | 1.6 ± 0.7 | < 0.0001 |
| Conduit function | |||
| Passive LAEF (%) | 21.5 ± 7.3 | 29.0 ± 7.5 | < 0.0001 |
| Passive LA strain (%) | 10.9 ± 4.6 | 14.1 ± 5.8 | 0.002 |
| SRp (s−1) | − 0.9 ± 0.4 | − 1.1 ± 0.5 | 0.02 |
| Booster pump function | |||
| Active LAEF (%) | 33.9 ± 10.9 | 37.9 ± 13.3 | 0.15 |
| Active LA strain (%) | 11.4 ± 4.3 | 15.2 ± 5.6 | 0.002 |
| SRa (s−1) | − 1.2 ± 0.5 | − 1.7 ± 0.7 | < 0.0001 |
All data are shown as mean ± standard deviation.
LAEF left atrial empty fraction, LAVI left atrial volume index, max maximum, min minimum, pre-ac pre atrial contraction, SR strain rate.