I. What should you do if you have an arrhythmia? When you find that your heartbeat is irregular, you should rest and go to a nearby hospital for examination and ask your doctor to give symptomatic treatment. Generally speaking, atrial premature beats have less impact on heart function and can be controlled by adequate rest and medications such as digitalis preparations; ventricular premature beats should be actively treated and controlled as early as possible, and other arrhythmias should also be treated promptly. In patients with atrial fibrillation, correction of atrial fibrillation can be considered 3 months after surgery, usually when the heart function is well recovered. If your atrial fibrillation is more stubborn, your heart function is poor or you have already corrected fibrillation 1-2 times unsuccessfully, do not force fibrillation to avoid danger and poor results, but continue to take cardiac diuretic drugs and treat the symptoms. Second, the correct treatment of heart murmur. Sometimes after mitral valve replacement, a mild diastolic murmur can still be heard in the apical part of the heart; a mild systolic murmur can be heard in the aortic valve area. These murmurs are usually normal, mostly due to the narrow annulus of the prosthetic valve, and do not have any hemodynamic impact, so you do not need to worry about them. If you have a mechanical valve, you may sometimes hear a metallic clanging sound during the heartbeat, which is also normal and not a cause for concern. In addition, if you or your surgeon find other murmurs or no murmurs in the early postoperative period, but new murmurs are found later, further examination is needed to analyze the nature and cause of the murmur and to determine the course of treatment. What if the preoperative symptoms disappear unsatisfactorily or new symptoms appear after surgery? Valve replacement can generally improve symptoms more significantly after surgery, and its efficacy is certain. However, because valve disease is a complex pathological process, coupled with the trauma of the surgery itself, there are sometimes some symptoms in the early postoperative period. As long as you take care of yourself and treat the symptoms, they will gradually decrease or even disappear. Sometimes the symptoms caused by non-cardiac factors cannot be completely eliminated, so it is necessary to distinguish the causes, treat them separately and give reasonable treatment. As for new symptoms that arise suddenly, you should go to the hospital in time to find the cause, distinguish whether it is a cardiac factor, and provide symptomatic treatment. Valve failure is extremely rare, but it is important to be alert and to contact the hospital for symptomatic treatment as soon as it is confirmed. Fourth, you may be able to have a pregnancy and delivery or undergo surgical treatment for another condition. If you wish to have a pregnancy and delivery after valve replacement or if you have other medical conditions that require surgical treatment, this is perfectly possible, such as tooth extraction, appendectomy, abortion, and other major and minor procedures.