美洛西林钠系第三代半合成青霉素 ,具有广谱、高效、血药浓度高、组织分布广及副作用少等优点。我院儿科自 1999年 3月～ 2 0 0 0年 3月应用美洛西林钠治疗呼吸系统疾病 ,疗效非常满意 ,现报道如下 :将来自门诊及住院患呼吸系统疾病的患儿随机分为两组 ,治疗组 56例 ,对照组 30 The mezlocillin sodium is the third generation semi-synthetic penicillin, which has the advantages of broad spectrum, high efficiency, high plasma concentration, wide distribution of tissues and few side effects. Pediatric hospital from March 1999 to March 2000 application of mezlocillin sodium in the treatment of respiratory diseases, the effect is very satisfactory, are reported as follows: The outpatient and inpatient respiratory diseases were randomly divided into two children Group, treatment group 56 cases, control group 30