HI Thank for asking to HCM I really appreciate your concern I guess you must have spelled wrongly or understood it wrongly, it is not ECG but this is EEG, yes with the help of EEG the epileptic seizure can be detected easily, the choice of drug is depend upon the nature of seizures and weight of child severity of disease, and the pediatrician takes the great care for this and you would be inform for that, so you need not worry about this, the treatment need to be taken for long time, care should be taken for certain things like child should not go near swimming pool fire work, hope this information helps you, have nice day.