How to find painless myocardial infarction?

Clinical experience has shown that, where the following conditions encountered, should be highly suspected the existence of painless myocardial infarction. (1) the near future, the repeated occurrence of chest bulging back nausea, heavy or shortness of breath. (2) there paroxysmal difficulty breathing, shortness of breath, not supine, cough, cough white present phlegm or sputum pink bubble. (3) suddenly appeared flustered, nausea and looking pale, a cold sweat, limbs, the cooler. (4) the thought to the elderly or sudden loss of consciousness. (5) a diabetic coma are. (6) decreased the blood pressure of unknown cause, especially those emerging in the near future. (7) the sudden unexplained syncope or seizure. Because the prognosis of myocardial infarction and unrelated to the degree of pain and painless myocardial infarction due to the good old people, and attendance late complications more easily misdiagnosed missed diagnosis, and other factors, but higher than the mortality pain symptoms. Therefore, the clinical fooled encountered above, it shall be promptly dealt electrocardiogram, and other related investigation to further diagnosis.