A heart that keeps beating very fast is a sign of tachycardia, and an electrocardiogram can be used to distinguish which type of tachycardia is present. If sinus tachycardia is present, it can be controlled with oral medications such as Betalucil. If supraventricular tachycardia, atrial tachycardia, or ventricular tachycardia is present, medications need to be given according to the specific arrhythmia. For example, paroxysmal supraventricular tachycardia can be treated with radiofrequency ablation; atrial tachycardia can be treated with oral medications, and atrial fibrillation can be treated with intravenous medications. When ventricular tachycardia occurs, it is a more critical situation, and needs to be consulted in time, the specific diagnosis and treatment need to be judged and implemented by professional doctors.