Table 2.

Clinical characteristics of the children diagnosed with an inherited cardiac arrhythmia syndrome

	Children diagnosed with an inherited cardiac arrhythmia syndrome (n=47)
Time since diagnosis, days
Mean (SD)	1444.31 (1062.27)
Minimum/maximum (range)	42/4678 (4636)
Diagnosis, n (%)
Long QT syndrome	29 (62)
Brugada syndrome	11 (23)
Catecholaminergic polymorphic ventricular tachycardia	5 (11)
Short QT syndrome	1 (2)
Unknown	1 (2)
Symptoms, n (%)
No	27 (57)
Yes	20 (43)
Out-of-hospital cardiac arrest, n (%)
No	44 (94)
Yes	3 (6)
Treatment, n (%)
None	13 (28)
Medication	27 (57)
Medication+ICD	7 (15)
History of SCD in immediate family, n (%)
No	41 (87)
Yes	6 (13)

ICD, implantable cardioverter-defibrillator; SCD, sudden cardiac death.