Genotype and<unk>  interval duration are the strongest predictors of outcome for patients with<unk> . These have been combined to create an externally validated risk score calculator, estimating a 5 year risk for each individual patient, which can help physicians to identify patients at the highest risk of life-threatening arrhythmic events. For people who experience cardiac arrest or fainting caused by<unk>  and who are untreated, the risk of death within 15 years is around 50%. With careful treatment this decreases to less than 1% over 20 years. Those who exhibit symptoms before the age of 18 are more likely to experience a cardiac arrest.
Long QT syndrome
Brugada syndrome
Short QT syndrome
Arrhythmogenic cardiomyopathy
Catecholaminergic polymorphic ventricular tachycardia
Opitz G/BBB syndrome
Jervell and Lange-Nielsen syndrome
Familial atrial fibrillation