Cardiogenic dyspnea is the clinical symptom of acute left heart insufficiency due to various causes of heart disease, and the patient is conscious of dyspnea. The first symptom is inability to breathe, for example, inability to breathe lying down and have to take a sitting position, paroxysmal dyspnea at night with coughing pink foamy sputum, all of which are clinical symptoms of cardiogenic dyspnea. The first symptom is dyspnea, especially when lying down, which is the most obvious clinical symptom. At this time, the patient will have the following clinical manifestations, such as small and medium-sized wet rales at the bottom of the lungs, as well as changes in respiratory frequency, depth, and rhythm, and the jugular vein can be seen in severe cases.