Most patients with hyperthyroid heart disease gradually recover from their heart disease after their hyperthyroidism is cured. In a few cases, due to late treatment, the heart disease is irreversible and leaves permanent heart enlargement, arrhythmia or atrioventricular block, etc. Although hyperthyroidism is controlled, the prognosis for such patients is still poor. In your case, the primary problem is to control the hyperthyroidism, hyperthyroidism is under control, heart disease can gradually return to normal. First of all, hypothyroidism is not terrible, it can be treated with nail tablets instead, and there are few comorbidities; in Britain and the United States, they use radioactive iodine as a one-time cure for hypothyroidism, and they think it is worthwhile because the comorbidities of hyperthyroidism are the most life-threatening to patients. You should be patient and find the right amount of balance for you under the guidance of your physician, and then take it under long-term observation. During the treatment process, do not be impatient, and if the indicators are normal after the control of hyperthyroidism, do not rush to adjust the amount of medication. In addition, eat more vitamin-rich foods, such as vegetables, etc.; vitamin drugs can be used in vitamin B complex, because one or two vitamins alone are not conducive to their synergistic absorption and cannot achieve the effect of medication, while vitamin complex can overcome these shortcomings.