Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Interventional
Official Title: Comparison Between Epinephrine and Exercise Test in QT Long Syndrome Patients With KCNQ1 or KCNH2 Mutation Without Long QT Interval in Rest ECG
Brief Summary: The aim of the study is to evaluate the best stress exam to unmask long QT in patient with KCNQ1 or KCNH2 mutation without long QT interval in rest electrocardiogram.