Irregular heart rate, breathing, serious?

If

the patient's heart rate and breathing are irregular, but not accompanied by other phenomena, they can be relieved after a period of time, usually not serious, which may be caused by excessive excitation of sympathetic nerves due to emotional excitement, strenuous exercise, etc. If the patient is accompanied by chest tightness, chest pain, shortness of breath and other abnormal phenomena, and the duration is longer, it is more serious and has a greater impact on the body. It may be caused by viral myocarditis, which causes myocardial cells to be stimulated by the virus and damaged, affecting the normal contraction and relaxation of the myocardium, causing the above phenomenon.