For a patient with rheumatic heart disease mitral valve stenosis, when to choose surgery to replace the valve? It is safer to operate very early, but since the symptoms are not heavy before surgery, there is little improvement after surgery. If the valve is replaced with a biologic valve, although it does not require anticoagulants, the life span of the biologic valve is limited. So what to do? Now generally look at two points: one is the presence of heart failure, the second is to see whether there is atrial fibrillation. The most easily detectable manifestation of the so-called heart failure is that when you sleep, you can not sleep on a normal pillow as usual, but need to cushion the pillow high or even half sitting and half lying to sleep, otherwise you will feel suffocated, and some people will wake up from sleep after falling asleep. The so-called atrial fibrillation, that is, the heartbeat is particularly uneven, some people have repeatedly heart thump or sudden panic, feel their own pulse is fast and slow, if you can not get, to the hospital to check the electrocardiogram can be clear whether atrial fibrillation. Atrial fibrillation itself is not very dangerous to people, but after atrial fibrillation the heart is prone to grow thrombus, and the thrombus is easy to fall off, if it falls off with the blood flow to the brain, there will be hemiplegia, aphasia, hemiplegia, and if it falls off to the limbs, there will be coldness and severe pain in the limbs, and in serious cases, only amputation. If there are two manifestations of heart failure and atrial fibrillation, don’t wait any longer, it’s time for surgery, which is more effective at this time and won’t delay the disease or be too early.