Table 3.
Baseline characteristics
| characteristics | total patients (n = 55) | heart failure (n = 22) | palpitations or arrhythmia (n = 43) | hypertension (n = 8) |
|---|---|---|---|---|
| median age (years) | 45 (19 to 70) | 45.5 (19 to 66) | 45 (21 to 70) | 60 (32 to 70) |
| male (%) | 19 (34.5) | 9 (40.9) | 14 (32.6) | 4 (50.0) |
| severity of CHD | ||||
| – mild (%) | 6 (10.9) | 0 (0) | 6 (14.0) | 2 (25.0) |
| – moderate (%) | 29 (52.7) | 12 (54.5) | 21 (48.8) | 4 (50.0) |
| – severe (%) | 20 (36.4) | 10 (45.5) | 16 (37.2) | 2 (25.0) |
| history of cardiac surgery (%) | 52 (94.5) | 22 (100) | 40 (93.0) | 8 (100) |
| pacemaker (%) | 11 (20.0) | 6 (27.3) | 10 (23.3) | 1 (12.5) |
| arrhythmia at baseline (%) | 43 (78.2) | 10 (45.5) | 43 (100) | 6 (75.0) |
| NYHA class | ||||
| – II (%) | 17 (30.9) | 17 (77.3) | 6 (14.0) | 2 (25.0) |
| – III (%) | 5 (9.1) | 5 (22.7) | 4 (9.3) | 1 (12.5) |
| – IV (%) | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
| symptoms | ||||
| – palpitations (%) | 31 (56.4) | 5 (22.7) | 31 (72.1) | 5 (62.5) |
| – dyspnoea (%) | 8 (14.5) | 7 (31.8) | 4 (9.3) | 0 (0) |
| – chest pain (%) | 4 (7.3) | 1 (4.5) | 4 (9.3) | 0 (0) |
| – near collapse (%) | 2 (3.6) | 2 (9.1) | 2 (4.7) | 0 (0) |
| – dizziness (%) | 7 (12.7) | 4 (18.2) | 7 (16.3) | 1 (12.5) |
| – no symptoms (%) | 15 (27.3) | 8 (36.4) | 7 (16.3) | 3 (37.5) |
| RV function | ||||
| – poor (%) | 3 (5.5) | 1 (4.5) | 3 (7.0) | 0 (0) |
| – moderate (%) | 16 (29.1) | 8 (36.4) | 13 (30.2) | 6 (75.0) |
| – good (%) | 36 (65.5) | 13 (59.1) | 27 (62.8) | 2 (25.0) |
| medication | ||||
| – antiarrhythmics (%) | 35 (63.6) | 14 (63.6) | 31 (72.1) | 8 (100) |
| – diuretics (%) | 12 (21.8) | 10 (45.5) | 9 (20.9) | 2 (25.0) |
| – anticoagulation (%) | 28 (50.9) | 8 (36.4) | 27 (62.8) | 5 (62.5) |
* Data are number of patients (percentage), median (range) or mean (±standard deviation)
CHD congenital heart disease, NYHA New York Heart Association, RV right ventricle