患儿男 ,9个月 ,主因间断发热 15天 ,呼吸困难 2天于 1998年 11月 2 7日入院。患儿于入院前 15天开始发热、稀便 ,惊厥发作 1次 ,无咳喘、呕吐 ,在外院经抗感染、抗惊厥治疗一度好转。其后病情反复 ,口服先力腾等药物无效。入院前 2天出现呼吸急促、呻吟 ,伴嗜睡、拒食。院外查 Children male, 9 months, mainly due to intermittent fever 15 days, 2 days of difficulty breathing in November 27, 1998 admission. Children with fever 15 days before admission, loose stools, convulsions attack 1 times, no cough, asthma, vomiting, anti-infective outside the hospital, anti-convulsive treatment once improved. After repeated illness, oral first force and other drugs ineffective. 2 days before admission, shortness of breath, moaning, with lethargy, antifeedant. Hospital investigation