Table 1.
Baseline characteristics of the study groups.
|
Study population
(n = 72) |
Typical AFL group
(n = 45) |
Atypical AFL group
(n = 27) |
P-value* | |
|---|---|---|---|---|
| Age (years) | 59.9 ± 12.1 | 60.0 ± 11.7 | 59.8 ± 13.1 | 0.941 |
| Male sex | 38/72 (52.8%) | 25/45 (56.5%) | 13/27 (46.2%) | 0.542 |
| Hypertension | 38/72 (52.8%) | 22/45 (50.0%) | 16/27 (57.7%) | 0.393 |
| Diabetes mellitus | 13/72 (19.1%) | 7/45 (17.4%) | 6/27 (19.2%) | 0.476 |
| Chronic kidney disease | 20/72 (27.8%) | 12/45 (26.1%) | 8/27 (30.8%) | 0.786 |
| Hyperlipidemia | 19/72 (26.4%) | 8/45 (17.4%) | 11/27 (42.3%) | 0.007 |
| Congestive heart failure | 21/72 (29.2%) | 16/45 (34.8%) | 5/27 (19.2%) | 0.124 |
| Coronary artery disease | 17/72 (23.6%) | 9/45 (17.4%) | 8/27 (30.8%) | 0.352 |
| Atrial fibrillation | 23/72 (31.9%) | 17/45 (37.0%) | 7/27 (23.1%) | 0.302 |
| Antiarrhythmic drug | 39/72 (54.2%) | 26/45 (57.8%) | 13/27 (48.1%) | 0.471 |
| Left ventricular ejection fraction (%) | 52.5 ± 12.4 | 51.2 ± 11.0 | 53.0 ± 8.8 | 0.476 |
| Left ventricular dysfunction | 16/72 (22.2%) | 12/45 (26.1%) | 4/27 (15.4%) | 0.242 |
| Left atrial enlargement | 65/72 (90.3%) | 42/45 (93.5%) | 23/27 (84.6%) | 0.259 |
| Left atrial diameter (mm) | 46.3 ± 7.5 | 47.4 ± 8.1 | 44.4 ± 6.2 | 0.107 |
| Right atrial enlargement | 14/72 (19.4%) | 10/45 (21.7%) | 4/27 (15.4%) | 0.442 |
| Multiple valve surgery | 32/72 (44.4%) | 20/45 (43.5%) | 12/27 (46.2%) | 1.000 |
| Coronary bypass surgery | 10/72 (13.9%) | 6/45 (13.0%) | 4/27 (15.4%) | 0.860 |
| Surgical AF ablation | 9/72 (12.5%) | 5/45 (11.1%) | 4/27 (14.8%) | 0.720 |
AFL, atrial flutter; AF, atrial fibrillation.
*
Comparison between the typical and atypical atrial flutter groups.