Derivatization of the Understanding of the Pathogenesis of Pulmonary Impediment

This paper discussed the development characteristics of the pulmonary impediment theory in different historical periods. The theory of the etiology and pathogenesis of pulmonary impediment originated in the Internal Classic as one of the five zang-organs impediment， from which the majority of the later generations' illustration have analyzed. In Jin， Sui and Tang dynasties， the healers discussed the pulmonary impediment almost from the perspective of air exhaustion and put an emphasis on the internal deficiency of zang-fu organs role in the occurrence and development of pulmonary impediment. In Song， Jin and Yuan dynasties， various theories of the etiology and pathogenesis of pulmonary impediment sprung up and consumptive disease was emphasized as its main symptom. In Ming and Qing dynasties， in addition to inheritance of the previous generations' theories， warm disease healers also had some innovations， who either viewed pulmonary impediment as pulmonary obstruction， or regarded pulmonary impediment as one of the pathogenesis， which have expanded its denotation.