What are the dangerous precursors of coronary heart disease?

1, exertion or tension suddenly appeared behind the sternum or the left side of the chest pain, accompanied by sweating, and its pain to the left shoulder, arm and neck dispersion, duration of about 3-5 minutes, rest will relieve; 2, physical activity, panic, shortness of breath, fatigue, dyspnea; 3, going up the stairs or climbing the mountain compared with their own previous, or compared with other people easily fatigue, panic, shortness of breath, breathlessness; 4, a full meal, the cold, When full meal, cold, tension or life rhythm accelerated, often feel palpitation, chest pain; 5, night sleep process, low pillow lying feeling breath holding; asleep or nightmare woke up, feel palpitation, chest tightness, dyspnea, need to sit up to relieve; 6, more heart rate irregularity, bradycardia or tachycardia; 7, often dizziness, blurred vision; 8, the three highs: (blood pressure, blood glucose, high blood fat); 9, long-term episodes of left shoulder pain The effect of general treatment is not obvious, and most of them have hidden coronary heart disease.