If a patient develops chest tightness, shortness of breath, and back pain, the first thing to consider is cardiogenic diseases, such as patients with unstable angina, acute myocarditis, or acute pericarditis, infective endocarditis, valvular disease of the heart, or obstructive hypertrophic cardiomyopathy, all of these conditions will have a series of clinical symptoms and reactions such as chest tightness, uncomfortable shortness of breath, and back pain, and especially patients at this time will also appear, such as dyspnea and, in severe cases, decreased activity tolerance, all of which are cardiogenic conditions leading to ischemia and hypoxia in cardiomyocytes. In addition, if the patient develops respiratory diseases, in various causes of pneumothorax, such as tension pneumothorax, open pneumothorax, at this time will also be uncomfortable with breathing and gasping for air. If the patient develops a large pleurisy, pleural effusion, or lung infection, the clinical symptoms and manifestations mentioned above will also be present.