After three days of stopping metoprolol heart rate is still low, you can first observe, if necessary, follow the doctor’s advice to choose atropine, isoprenaline and other drug treatment, as well as permanent pacemaker implantation treatment. Metoprolol belongs to the beta receptor antagonist, after the use of which can inhibit myocardial contractility and slow down the heart rate, mainly used in the treatment of hypertension, angina pectoris, arrhythmia and other diseases. However, the drug may cause bradycardia, dizziness, headache and other discomforts after use. If bradycardia occurs while taking metoprolol and the symptoms are not relieved after three days of stopping the drug, as well as the heart rate does not fall below 50 beats per minute, it can be observed first. If there is insufficient cardiac output, dizziness, dizziness, fainting and other uncomfortable symptoms, you can follow the doctor’s instructions to choose atropine, isoprenaline and other drugs for treatment. When medication is ineffective, or when negative chronotropic drugs are needed, a permanent pacemaker can be implanted. If the above symptoms occur, it is recommended to go to the hospital in time for early and regular treatment.