Shoulder rest: the name of the evidence. Shoulder rest is a condition that helps breathing. Most often seen in people with severe respiratory distress. Su Wen? General Commentary on Void and Realities: “A person with wheezing and shoulder rest has a large real pulse; if it is slow, he will live; if it is urgent, he will die.” This evidence can also be seen during asthma attacks. The state of difficulty in breathing and lifting the shoulders to help breathing. It is caused by respiratory organ lesions and mainly manifests itself in the following three forms: 1. Inspiratory dyspnea manifests itself as wheezing, sternal, supraclavicular fossa and intercostal space depression during inspiration – triple concave sign. It is common in larynx and tracheal stenosis, such as inflammation, edema, foreign body and tumor. 2, expiratory dyspnea Prolonged expiratory phase with croup is seen in bronchial asthma and obstructive lung disease. 3, mixed dyspnea seen in pneumonia, pulmonary fibrosis, massive pleural effusion, pneumothorax, etc. 4, cardiogenic dyspnea Commonly seen in cardiogenic pulmonary edema due to left heart insufficiency, its clinical characteristics: 1, the patient has a history of severe heart disease. 2, presenting mixed dyspnea, which is obvious in the prone position and at night. 3.Moderate and small wet gong sounds may appear at the base of the lungs and change with position. 4.X-ray examination: abnormal changes in cardiac shadow; congestion in and around the hilum or both signs of pulmonary edema. 5, toxic dyspnea dyspnea various causes of acidosis, can make the blood carbon dioxide rise, pH lower, stimulate peripheral chemoreceptors or directly excite the respiratory center, increase respiratory ventilation, manifested as deep and large dyspnea; respiratory depressants such as morphine, barbiturates and other poisoning, can also inhibit the respiratory center, so that shallow and slow breathing. 6, hematogenous dyspnea severe anemia can cause shortness of breath due to a decrease in red blood cells and insufficient blood oxygen, especially after activity; hemorrhage or shock due to ischemia and blood pressure drop, stimulating the respiratory center and causing dyspnea. 7, neuropsychiatric and myopathic dyspnea dyspnea serious brain diseases such as encephalitis, cerebrovascular accidents, brain tumors and other direct involvement of the respiratory center, the emergence of abnormal respiratory rhythm, resulting in dyspnea; myasthenia gravis crisis causes respiratory muscle paralysis, resulting in severe dyspnea; in addition, hysteria can also have episodes of dyspnea, which is characterized by significant frequent and superficial breathing, due to respiratory alkalosis is often accompanied by Hand-foot convulsions.