Clinical characteristics of study patients according to the result of internal cardioversion
| Successful cardioversion | Early reinitiation of atrial fibrillation | Failed cardioversion | |
|---|---|---|---|
| Number (%) | 32 (50) | 20 (31) | 12 (19) |
| Age (years) | 61 (11) | 64 (9) | 65 (9) |
| Sex (M:F) | 20:12 | 15:5 | 10:2 |
| Left atrial diameter (mm) | 44 (6) | 43 (7) | 44 (7) |
| Left ventricular ejection fraction | 59 (12) | 58 (8) | 57 (12) |
| Threshold (V) | 324 (56) | 326 (54) | – |
| Energy (J) | 3.95 (1.24) | 4.06 (1.45) | – |
| Drug treatment (n) | |||
| β Blocker | 12 | 8 | 6 |
| Digitalis | 7 | 2 | 2 |
| None | 13 | 10 | 4 |
| No heart disease (n) | 14 | 9 | 5 |
| Duration of atrial fibrillation (months) | 25 (37)1-150 | 28 (44)1-150 | 51 (31) |
Values are mean (SD).
↵1-150 p < 0.05 v failed cardioversion.