If the following symptoms appear, which may indicate impaired heart  function, you should pay more attention to your heart health. 1. Shortness of  breath when lying down. If you lied on the ground for a few minutes, shortness  of breath appears, and there is only a little relief after sitting up, there may  be heart failure. Due to the increased amount of circulatory blood when lying on  back, the airway resistance increased and the patient developed shortness of  breath. The patient should go to the cardiology department in time to rule out  the possibility of pulmonary diseases. 2. If there is a sense of heaviness in  the chest, there are big stones. It is commonly referred to as "chest  tightness". If emotional or other organ factors such as respiratory function  changes are excluded, the patient may have myocardial ischemia. If chest  tightness cannot be relieved for several minutes, or severe chest pain appears  sequentially, then angina or even acute myocardial infarction (referred to as  "myocardial infarction") is likely to occur. The patient should dial 120 and go  to the nearest hospital as soon as possible. 3. If the clothes and shoes  suddenly became tight, many people may think that they are gaining weight.  However, for patients with heart disease, it may indicate impaired heart  function. Due to the decrease in cardiac output (total blood volume ejected from  the ventricle per minute), kidney blood flow is reduced, and the amount of water  discharged from the body is reduced. Therefore, symptoms such as puffiness of  lower limbs and weight gain (especially increase of more than 2 kg in 3 days)  may happen. Patients should seek medical assistance in time. 4. Loss of  appetite. In addition to the symptoms of loss of appetite, patients with  impaired heart function may also have symptoms such as bloating, nausea,  vomiting, constipation, and upper abdominal pain, mostly due to right heart  failure and gastrointestinal congestion. 5. Anxious. Normal people's anxiety is  mostly related to emotions. Some people still feel palpitations and restlessness  when their emotions are stable. This depends on whether there is heart disease.  Increased heart rate and arrhythmia are common causes of panic anxiety. They are  mostly caused by functional or organic changes in the heart. Early intervention  should be done to prevent the symptoms from getting worse. 6. Continuous  coughing. Most people will have symptoms such as cough and fever, and the cough  will not be different between day and night. However, some people do not have  fever and other cold-like symptoms, but they may cough frequently. Coughing  mostly appears at night, and it is more obvious when lying than when sitting up.  This may be due to pulmonary congestion, which irritates the airway, and may be  accompanied by pink with foamy sputum with little blood, and even pink foamy  sputum during acute attacks. Once any one or several of the above  "heart-breaking" symptoms appear, you need to seek medical attention promptly  and follow the doctor's advice to rule out related diseases. After a clear  diagnosis, you should strictly follow the doctor's instructions for medication  and other treatments. Never change or stop taking drug yourself. If the  situation is serious, you should call 120 immediately for help.