患儿，男，5天，因生后气喘3天伴发热半天入院。系第二胎、第二产，足月顺产，无窒息史，生后第二天出现恶心，呕吐少许粘液，第三天出现气喘，吮乳减少，无呛咳史，入院当日上午发热，气喘加重、拒乳。体检：体温38．2C，脉搏110次／分，呼吸48次／分。生长发育正常，哭声可， Children, male, 5 days, 3 days after birth due to asthma with fever half a day admitted to hospital. The second birth, the second birth, full-term birth, no history of asphyxia, the second day after birth nausea, vomiting a little mucus, the third day of asthma, sucking milk to reduce, no cough history, on the morning of admission fever, asthma Increase, refuse milk. Physical examination: body temperature 38.2C, pulse 110 beats / min, breathing 48 beats / min. Growth and development of normal, cries,