This is a complex issue. In general, atrial arrhythmias, the prognosis is mostly not serious. The risk of arrhythmias, especially ventricular arrhythmias, is judged mainly on the basis of: (1) the underlying pathology, such as myocardial infarction, severe myocardial ischemia, ventricular wall tumor or myocarditis; (2) the state of cardiac function; (3) the presence of electrolyte disturbances; if the patient has good cardiac function, no premature ventricular beats of organic heart disease, or non-sustained ventricular tachycardia, the arrhythmia is generally benign. If the patient has severe organic heart disease with significantly impaired cardiac function and a relatively high number of premature beats, the risk is considered high and sudden death is possible. As a patient, if you feel that the palpitations are aggravated by exertion, the early beats are frequent and the symptoms are prominent, especially if they are accompanied by dizziness, lightheadedness, or even syncope and black haze that appear simultaneously with the palpitations, you should pay full attention to them and see a doctor early for examination and treatment.