Chest pain with chest tightness palpitations is myocardial infarction?

Chest pain accompanied by chest tightness and palpitations may be caused by myocardial infarction. It may also be arrhythmia, rheumatic heart disease, angina pectoris, pericarditis, pericardial effusion and other diseases, will appear chest pain palpitations and other phenomena. Secondly, when the patient after intense exercise or excessive mental anxiety, excitement, this phenomenon will also occur.