How to determine the sudden myocardial infarction?

How determined is really a myocardial infarction, is to save the lives of patients with myocardial infarction key. Therefore, people need to understand some of the clinical manifestations of acute myocardial infarction, to prevent any eventuality occurred.
AMI typical clinical manifestations are:
1. Sudden retrosternal pain or heart area before, the left Jianbei or other radiation, but its procedures than normal by the apparent increase in angina pectoris, the longer the duration, nitroglycerin tablets, not eased, with sweat, fear.
2. Severe pain often accompanied by frequent nausea, vomiting and abdominal distention.
3. Pain after 24 to 48 hours there will be procedures ranging from fever and tachycardia.
4. Majority of patients with arrhythmias, blood pressure dropped. Some patients, there will be acute left ventricular failure, manifested as difficulty in breathing, coughing, weight, pulmonary edema occur.
Part of the patients do not have typical symptoms of atypical symptoms are common:
1. Area without chest pain or mild pain, the general was particularly prevalent in the elderly and patients with diabetes mellitus.
2. Sometimes pain in the abdomen, easily misdiagnosed as gastric perforation or acute pancreatitis, etc.. There are a small number of patients for the performance of the neck and back pain. If there is the elderly such symptoms should think of this disease.
3. That some patients showed an incidence of acute heart failure or shock, but no obvious pain.
4. Acute myocardial infarction occurred in the prior 80% of the patients have threatened performance, that is, prior to the onset of in a few days or a few weeks, weakness, chest discomfort, palpitations and other symptoms activities. If found to inflammation, and timely treatment, some patients can avoid the occurrence of myocardial infarction.