Inherited Arrhythmias: Of Channels, Currents, and Swimming

After careful evaluation of the case and genetic testing, the girl and her parents are informed about the diagnosis of Jervell-Lange-Nielsen syndrome and its potential risks. She receives a low-dose beta blocker for prevention of arrhythmias and avoidance of strenuous exercise, particularly swimming, is recommended. Her younger brother turned out to have developed a respiratory infection, which led to the episode of loss of consciousness but, apart from that, is entirely healthy.