Patients characteristics
| Total small ASD (n=151) | No tachyarrhythmia (n=118) | Supraventricular tachycardia (n=24) | P value | Ventricular tachycardia (n=12) | P value | |
| Age (years) | 31.9±12.5 | 28.2±9.3 | 45.9±13.6 | 0.001 | 45±14.2 | 0.001 |
| Female (%) | 61.6 | 61.9 | 58.3 | 0.820 | 66.7 | 1.000 |
| Height (cm) | 172±10 | 171±11 | 174±8 | 0.289 | 170±8 | 0.764 |
| Weight (kg) | 75±20 | 75±20 | 78±18 | 0.460 | 69±16 | 0.350 |
| BMI (kg/m2) | 25.2 | 25.2±5.2 | 25.9±6.3 | 0.577 | 23.5±4.2 | 0.302 |
| Alcohol: high risk (>21 men, >14 women) (%) | 5 | 6 | 4 | 1.000 | 0 | 1.000 |
| Current smoker (%) | 17.2 | 18.6 | 12.5 | 0.570 | 8.3 | 0.692 |
| Diet, self-estimated if healthy (%) | 37.7 | 32.7 | 54.1 | 0.062 | 50 | 0.337 |
| Age at diagnosis (years) | 8.9±13.7 | 5.8±9.4 | 21.7±20.4 | 0.001 | 24.5±22.5 | 0.001 |
| Follow-up (years) | 18.9±9.0 | 18.4±7.1 | 20.6±15.5 | – | 17.1±12.4 | – |
| Self-estimated health (excellent/good) (%) | 88.1 | 89.0 | 91.7 | 1.000 | 75 | 0.168 |
| Self-estimated physics (good) (%) | 22 | 22.2 | 20.8 | 1.000 | 25 | 0.731 |
| Chronic lung disease, n | 4 | 4 | 0 | – | 0 | – |
| Diabetes, n | 1 | 0 | 1 | – | 0 | – |
| Pulmonary heart disease, n | 1 | 1 | 0 | – | 0 | – |
| Hypertension, n | 3 | 0 | 3 | – | 0 | – |
| Ischaemic heart disease, n | 3 | 0 | 2 | – | 1 | – |
| Cerebrovascular events, n | 3 | 0 | 1 | – | 2 | – |
P values express the comparison between ASD patients with tachyarrhythmias and ASD patients without tachyarrhythmias.
ASD, atrial septal defects; BMI, body mass index.