Obsolete heart attack usually presents typical symptoms such as chest pain, chest tightness, panic, etc. In some cases, other symptoms such as shock, acute heart failure, epigastric pain, etc. can also occur, as described below: 1. Typical symptoms: In the stabilization period, there are usually no obvious clinical symptoms, but panic, chest tightness, shortness of breath and other symptoms will appear after work. In acute attack, there is a sharp and persistent pressure sensation behind the sternum or in the precordial region, which cannot be alleviated after rest or taking medication, and is accompanied by symptoms such as chest tightness, irritability, sweating and dyspnea. 2. Other symptoms: very few patients do not have obvious pain, may appear shock, acute heart failure; a few patients have epigastric pain; some patients have neck, jaw, pharynx, tooth pain and other symptoms. Therefore, once the stale heart attack has the above symptoms, you should go to the hospital immediately, so as not to delay the treatment, resulting in serious consequences, serious may be life-threatening.