不同年龄儿童肺炎支原体肺炎临床特征的差异

目的：了解不同年龄儿童肺炎支原体肺炎（MPP）的临床特征。方法：收集2010年1月至2011年12月因确诊MPP的住院患儿112例，对其临床资料进行回顾性总结分析。将所有入选患儿按年龄分为婴幼儿组（< 3岁）20例、学龄前儿童组（3岁～）41例、学龄儿童组（６～15.2岁）51例。比较不同年龄段儿童MPP的临床表现、肺部体征、全胸片及实验室检查等方面的差异。结果：婴幼儿组MPP患儿咳痰与喘息症状相对明显，发热多以低热为主，肺外表现以胃肠道症状为主，肺部体征较明显；学龄儿童组MPP患儿多表现为高热，干咳明显，多不伴喘息，肺外表现以皮损多见，肺部体征轻；学龄前组患儿临床表现介于两者之间。婴幼儿组、学龄前儿童组MPP患儿全胸片以支气管肺炎为主要表现，而学龄儿童全胸片以肺段实质浸润为主；婴幼儿组淋巴细胞计数高于学龄儿童组，学龄儿童组血CRP水平高于婴幼儿组。结论：不同年龄阶段的儿童MPP临床特征不同，尤其是婴幼儿与学龄儿童之间差异更明显。

Differences in the clinical features of Mycoplasma pneumoniae pneumonia among children of different ages

Objective To investigate the clinical features of Mycoplasma pneumoniae pneumonia(MPP) among children of different ages.Methods Retrospective analysis was performed on the clinical data of 112 children who were hospitalized due to MMP between January 2010 and December 2011.The children were divided into 3 groups according to their ages: infants(<3 years;n=20),preschool-aged children(≥3 years;n=41),and school-aged children(6-15.2 years;n=51).The three groups were compared in terms of their clinical symptoms,pulmonary signs,chest X-ray findings and laboratory test results.Results The infant group presented mainly with expectoration and wheezing,accompanied by low fever.They showed gastrointestinal symptoms as the most common extra-pulmonary manifestation and had evident pulmonary signs.The majority of the school-aged children group presented with high fever and a severe dry cough,and wheezing was seen in several of them.They showed rash as the most common extra-pulmonary manifestation and had slight pulmonary signs.The symptoms of the preschool-aged children group were in between.In the infant and preschool-aged children groups,most showed bronchopneumonia on chest X-ray,while in the school-aged children group,chest X-rays mostly showed segmental parenchymatous infiltration.The infant group had a higher lymphocyte count than the school-aged children group,while the school-aged children group had a higher serum C-reactive protein level than the infant group.Conclusions The clinical features of MPP are different among children of different ages,especially between infants and school-aged children.