Table 2 Comparisons of echocardiographic parameters and interatrial dyssynchrony between the groups with and without progression to
chronic atrial fibrillation (CAF)
| Overall | Transition to CAF | ||
| CAF | Not CAF | ||
| No of patients | 37 | 8 | 29 |
| Left atrial diameter (mm) | 44 (7) | 46 (6) | 43 (7) |
| Left atrial volume (ml) | 111 (29) | 120 (27) | 108 (29) |
| Left ventricular end-diastolic diameter (mm) | 48 (5) | 49 (5) | 48 (5) |
| Left ventricular end-diastolic volume (ml) | 78 (21) | 75 (15) | 79 (23) |
| Left ventricular ejection fraction (%) | 65 (8) | 64 (5) | 65 (8) |
| Transmitral inflow | |||
| E velocity (cm/s) | 68 (15) | 74 (7) | 67 (16) |
| A velocity (cm/s) | 72 (20) | 57 (19)* | 75 (19) |
| E/A ratio | 1.03 (0.38) | 1.41 (0.49)*** | 0.92 (0.27) |
| Tissue Doppler imaging | |||
| E′ (M) velocity (cm/s) | 9.0 (2.4) | 10.8 (1.9) | 8.6 (2.3) |
| A′ (M) velocity (cm/s) | 10.1 (2.9) | 7.7 (1.7)** | 10.7 (2.9) |
| E′ (T) velocity (cm/s) | 11.2 (3.0) | 11.0 (2.8) | 11.3 (3.0) |
| A′ (T) velocity (cm/s) | 15.8 (5.0) | 12.9 (3.5)* | 16.6 (5.1) |
| E/E′ (M) ratio | 8.3 (4.0) | 7.1 (1.5) | 8.7 (4.5) |
| P-A′ (T) interval (ms) | 138 (25) | 134 (37) | 138 (21) |
| P-A′ (M) interval (ms) | 167 (27) | 180 (39) | 163 (22) |
| A′ (M)-A′ (T) interval (ms) | 30 (14) | 47 (13)**** | 24 (10) |
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Values are mean (SD).
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*p<0.05; **p<0.01; ***p<0.001; ****p<0.0001.
