RESP in medicine means respiration, which is the abbreviation of Respiration. The vital signs that doctors say include respiration, and normal respiratory function can maintain the normal life activities of the human body. Under normal circumstances, the human body inhales oxygen from the air and then pumps blood through the alveoli to the pulmonary veins via the heart to provide oxygen to the tissues and cells, while carbon dioxide in the pulmonary veins diffuses to the alveoli and is expelled from the body through breathing. Thus, to maintain normal respiratory function, it is necessary that both ventilation and ventilation functions are normal. For example, in common chronic obstructive pulmonary disease, due to abnormal ventilation function, it can lead not only to hypoxia, but also to carbon dioxide retention.