Why is acute myocardial infarction so deadly? One of the reasons is that patients do not seek help in time. When someone suddenly develops chest pain, they or the person next to them does not know to call 120 for prompt medical attention. And what’s even scarier is that myocardial infarction symptoms don’t always manifest as typical severe chest pain, but often come in a variety of ways that can easily be overlooked or delayed. Therefore when the following 12 signs occur, it may indicate the occurrence or imminent occurrence of a myocardial infarction. Especially for men and people over 65 years of age and those with risk factors such as hypercholesterolemia, hypertension, obesity, smoking, diabetes and family history of heart disease, you should be extra vigilant when these following signs occur and take them to the doctor in time. 1. Fear: Myocardial infarction can cause patients to experience intense anxiety or fear of death. Survivors of myocardial infarction often talk about experiencing a sense of “impending doom” at the time. Chest discomfort/chest pain: Chest pain is a typical and most common symptom of myocardial infarction. However, not all myocardial infarction patients will experience chest pain, and chest pain may not be a heart condition. Heart-related chest pain is usually concentrated behind, or to the left of, the middle of the sternum. The sensation of chest pain has been compared to “an elephant sitting on your chest,” suggesting that this chest pain is often accompanied by a feeling of squeezing, pressure, or fullness. However, in women with myocardial infarction, the pain may not be obvious, but may be accompanied by a burning sensation. 3. Cough: A persistent cough or wheezing may be a sign of heart failure and pulmonary edema caused by myocardial infarction. Some patients with heart failure may even hemoptysis. 4. Vertigo: Acute myocardial infarction may cause a drop in blood pressure and an unusually slow or fast heart rate, which may cause vertigo and loss of consciousness. Fatigue: Women, in particular, may experience fatigue at the time of myocardial infarction or in the days or weeks before the attack. Fatigue may be a sign of heart failure due to myocardial infarction. 6. Nausea or loss of appetite: Stomach upset or vomiting is not a common symptom of myocardial infarction. However, abdominal distention and loss of appetite may occur in some patients with heart failure. 7. Pain in other areas: Many patients with myocardial infarction have pain symptoms that start in the chest and then spread to the shoulders, arms, elbows, back, neck, jaw or abdomen. However, some patients may not have chest pain, but only pain in other areas, or a change in the location of the pain. Men with myocardial infarction often have pain in the left arm, while women are more likely to have pain in both arms or pain between the two shoulder blades. 8. Fast or irregular pulse: Occasional transient palpitations need not be a cause for concern. However, an accelerated or irregular pulse, especially when accompanied by symptoms such as weakness, dizziness and shortness of breath, may be a sign of myocardial infarction, heart failure or arrhythmia. If left untreated, certain arrhythmias can lead to sudden death. 9, shortness of breath: shortness of breath and dyspnea may be lung diseases such as asthma, chronic obstructive pulmonary disease, but it may also be a manifestation of heart failure caused by myocardial infarction. In myocardial infarction, shortness of breath is usually accompanied by chest discomfort, or it may occur before chest discomfort or without chest discomfort. 10. Sweating: Chest discomfort accompanied by general sweating is often a common symptom of acute myocardial infarction. 11.Oedema: Myocardial infarction often causes heart failure, which can have fluid retention and lead to edema and sudden weight gain in the limbs, usually manifested as edema of the feet, ankles, lower limbs or abdomen. 12. Feeling of weakness: Some people may experience extreme weakness of unknown origin before or during a myocardial infarction. For example, some patients may say they cannot even pick up a piece of paper. Finally, I would like to remind you again that once you have these symptoms, do not spend time trying to figure out what is going on from books or the Internet, because it is dangerous to waste time, and it is crucial to be alert and seek medical attention in a timely manner.