本文报导以随机对照双盲给药法评价地塞米松治疗急性喉气管支气管炎的疗效。30例诊断为急性喉气管支气管炎的病儿,年龄8～60个月,随机分为治疗组16例、对照组14例,二组年龄、病情等均相似,前者于入院时及2小时后各给肌注地塞米松0.3mg/kg,后者以同样方法肌注安慰剂生理盐水作对照。二组病例以喘鸣、发绀、胸骨凹陷程度和呼吸,脉搏频率为指标,按病情轻重用 This article reports a randomized controlled double-blind administration of dexamethasone in the treatment of acute laryngotracheitis. Thirty children with acute laryngotracheal bronchitis were diagnosed as acute laryngotracheal bronchitis and were randomly divided into treatment group (n = 16) and control group (n = 14). The age and condition of the two groups were similar. The former were on admission and two hours later Each intramuscular injection of dexamethasone 0.3mg / kg, the latter in the same way intramuscular placebo saline control. Two groups of patients with wheezing, cyanosis, sternum depression and respiratory rate, pulse rate as an indicator, according to severity