A patient with sudden cardiac discomfort and nausea may have an acute myocardial infarction or cardiopulmonary disease combined with gastrointestinal disease, as follows: 1. Acute myocardial infarction: If an elderly person, or a person with previously diagnosed coronary artery disease, hypertension, or diabetes mellitus, first rule out whether an acute inferior wall, acute right ventricular myocardial infarction has occurred, first do an electrocardiogram and myocardial enzymology laboratory tests, to help better differentiate the diagnosis. Help better differential diagnosis, if finally clear is acute myocardial infarction, to urgent coronary intervention. 2, cardiopulmonary disease combined with gastrointestinal disease: some patients may also be the presence of pulmonary embolism, aortic stenosis, obstructive hypertrophic cardiomyopathy, patients sometimes accompanied by peptic ulcer or some gastrointestinal cold, there may also be some nausea, can also be further Re-examination of blood routine, cardiac ultrasound, chest X-ray will help to better clarify the diagnosis and troubleshoot urgent problems.