患儿男,2个月,主因间断呛奶、精神弱1个月入院。1个月前患儿无明显诱因出现呛奶,吃奶渐少,逐日消瘦,偶有喉鸣。约27d前患儿精神萎靡,哭声低弱。10d前出现咳嗽,经头孢曲松钠治疗7d,咳嗽稍好转,但仍频繁呛奶,间断喉鸣,以“肺炎”收入院。患儿为足月剖宫产,出生时体重3500g,无宫内 Children male, 2 months, mainly due to intermittent choking milk, mental weak 1 month admission. 1 month ago, no obvious incentive to choking children, less milk, daily weight loss, occasionally throat. About 27 days before the children apathetic, crying low. Cough appeared 10d before the treatment by ceftriaxone 7d, cough slightly better, but still frequent choking milk, intermittent laryngeal, “pneumonia” income hospital. Children with full-term cesarean section, birth weight 3500g, no intrauterine