维持正常呼吸的条件,是要有足够的通气量,使空气能进入肺内并呼出(通气功能)。同时,吸入肺泡内的气体,能与血液内气体进行循环交换(换气功能),任何影响此功能的过程,都可以出现患儿呼吸困难而出现气喘证,临床上多见于“小儿支气管肺炎、毛细支气管肺炎、小儿哮喘等”。小儿喘证是临床上比较常见的多发的病证,以冬春季多见。特别是缺钙及营养不良的小儿最易发生,它是以呼吸气促 Maintaining normal breathing conditions is to have sufficient ventilation so that air can enter the lungs and exhale (ventilation function). At the same time, inhalation of alveolar gas, with the blood gas exchange cycle (ventilation function), any impact on this function of the process, there may be respiratory difficulties in patients with asthma evidence, clinically more common in children with bronchial pneumonia , Bronchial pneumonia, pediatric asthma, etc. ". Pediatric asthma card is more common clinical evidence of multiple disease, more common in winter and spring. Especially calcium deficiency and malnutrition in children most likely to occur, it is to breath