What are the clinical manifestations myocardial infarction?

Most of the patients on admission prior to the onset of a few weeks by fatigue, chest discomfort, activities, palpitation, dyspnea, irritability, prodromal symptoms, such as angina. In which a new angina, early-onset angina) or add to the original angina (dioxin angina) was the most prominent. Its symptoms: 1. Pain is the first symptom, pain location and nature of the same with angina, have no obvious incentive, and often occurred in a quiet, level of heavier, longer duration, up to a few hours or a few days, rest and with nitroglycerin tablets containing not more than mitigation. Patients often irritability, sweating, fear, or a sense of dying. A small number of patients had no pain, a performance that is beginning to shock or acute heart failure. Some patients in the upper abdominal pain, was mistakenly believe that gastric perforation, acute pancreatitis, such as acute abdomen, and some patients pain radiation to the neck, back above the misconception that bone and joint pain.
2. Systemic symptoms of fever, tachycardia, increased leukocyte and erythrocyte sedimentation rate increases faster, and so on, the temperature about 38 degrees in general, rarely exceeds 39 degrees, lasted approximately one week.
3. Gastrointestinal symptoms severe pain often accompanied by frequent nausea, vomiting and abdominal pain. Severe may occur hiccup.
4. Arrhythmia found in 75% to 95% of the patients, the onset occurred in more than 1 ~ 2 weeks, and to begin within 24 hours of the most common, can be accompanied by fatigue, dizziness, the symptoms of syncope.
5. Hypotension, and shock common pain during blood pressure drop, not shock. Such as pain relief and systolic blood pressure remained below 10.67 kpa (8mmHg), irritability, looking pale skin Humidicool, thin and fast pulse, sweating the hill, volume reduction (per hour <20 ml), he was slow, or even faint service , compared with shock performance. In shock more than a few hours after the onset within one week to the owners.
6. Acute left ventricular heart failure is failure.