Patient: Female, 32 years old. Second degree sinus atrial block with chest tightness and shortness of breath on exertion. Usually no symptoms of dizziness. Arrhythmia and low heart rate, as low as 39 beats, during sleep. Up to more than 100 times. No medication An academician recommended to me Sengsong Heart Capsules, but another doctor said that the heart rate will be even lower if I eat them, so I don’t know whether I should take them or not? Chen Taibo: All ECG diagnosed sinus atrial block is degree II, which is a type of slow arrhythmia. The treatment principles for all slow arrhythmias are: implant a pacemaker if it is severe, follow up and observe if it is not severe, avoid drugs that may further lower the heart rate, and there is no drug that can be safely used for the long-term treatment of slow arrhythmias. There are strict scientific and professional criteria as to whether it is severe or not. A heart rate of more than 30 beats during nighttime sleep is very common. I don’t know much about the herbs you mentioned, but the drug is not mentioned in domestic or foreign textbooks for the treatment of arrhythmias.