The onset of acute myocardial infarction is usually considered to be sudden and seems to have no symptoms. In fact, this kind of acute myocardial infarction is a symptom. If the middle-aged and elderly people have the following situations, they must pay attention and seek medical advice in time.

1. Severe chest pain or tightness, and the pain lasts for more than 15 minutes. This is a typical chest pain and tightness, and it is a prelude to myocardial infarction. We must pay great attention to it and go to the hospital immediately.

2, palpitation, shortness of breath, nausea and vomiting, irritability and other phenomena are inexplicably produced, which is caused by the changing physical condition. People with a history of coronary heart disease are bound to pay attention to it.

3. Unexplained pain. This kind of unexplained pain may appear on the back, shoulders and arms. It is also possible that this kind of pain will "wander". It hurts here today and there tomorrow. This kind of unexplained pain needs to go to the hospital as soon as possible.

4. Stomach pain, which shows burning sensation, is a common phenomenon in people with coronary heart disease, angina pectoris or acute myocardial infarction, and patients usually have no stomach discomfort.

5, toothache, toothache for a short time, usually lasting about 3 minutes, and recurring within 1 week, which needs attention. Myocardial ischemia is one of the causes of toothache. If there is abnormal toothache, please go to the hospital in time.

6. Anxiety and insomnia. When there is no insomnia before, or there is nothing that causes excitement or anxiety, but you feel anxious for no reason, this is most likely a signal of myocardial infarction. It's like waking up suddenly in the middle of the night, thinking can't be controlled, and it will also produce a deep sense of fear, which is extremely abnormal.

7. The heartbeat is getting worse. My heartbeat suddenly accelerates without any inducement, lasting between 1 and 1 minutes, which may also be a hint of myocardial infarction from my body.

8. If you feel tired, dizzy and have a headache, headache and dizziness is a manifestation of myocardial ischemia. If you can't relieve it after rest, you should be vigilant.

Four things you should never do when you have a myocardial infarction: First, go to the hospital with someone.

It is right to go to the hospital after the onset of the disease, but if you have a myocardial infarction, you should never go to the hospital alone, because the myocardial infarction will increase the burden on your heart, which may lead to coma and respiratory arrest. If no one is with you, you may miss the opportunity of treatment. Second, don't drink water

Some people, after the occurrence of myocardial infarction, will rush to take the patient's breath, feed water and pat his back, hoping to reduce the blood viscosity, but this kind of behavior does not help the heart, and making the patient sit up is to increase the pressure on the heart. After drinking too much water, water will enter the blood, which may not be tolerated by an unhealthy heart, but will aggravate the phenomenon of chest tightness and shortness of breath. Third, be careful when using nitroglycerin < P > Nitroglycerin can dilate blood vessels and lower blood pressure, but patients with acute myocardial infarction should be careful when taking it. Patients with myocardial infarction must have their blood pressure measured before using nitroglycerin. If the blood pressure of the patient with myocardial infarction is found to be lower than 9/6mmHg, then nitroglycerin should not be used. Fourth, cardiopulmonary resuscitation should not be arbitrary < P > Cardiopulmonary resuscitation is suitable for patients with cardiac arrest and respiratory arrest, but not all patients with acute myocardial infarction have lost their breathing and heartbeat. Only when the patient is unconscious, unresponsive, and breathless can he be resuscitated for first aid.