Background:We aimed to compare the therapeutic efficacy of prolonged macrolide (PMC), corticosteroids (CST), doxycycline (DXC), and levofloxacin (LFX) against macrolide-unresponsive Mycoplasma pneumoniae (MP) pneumonia in children and to evaluate the safety of the secondary treatment agents. Methods:We retrospectively analyzed the data of patients with MP pneumonia hospitalized between January 2015 and April 2017. Macrolide-unresponsiveness was clinically defined with a persistent fever of ≥ 38.0°C at ≥ 72 hours after macrolide treatment. The cases were divided into four groups: PMC, CST, DXC, and LFX. We compared the time to defervescence (TTD) after secondary treatment and the TTD after initial macrolide treatment in each group with adjustment using propensity score-matching analysis. Results:Among 1,165 cases of MP pneumonia, 190 (16.3%) were unresponsive to macrolides. The proportion of patients who achieved defervescence within 48 hours in CST, DXC, and LFX groups were 96.9% (31/33), 85.7% (12/14), and 83.3% (5/6), respectively. The TTD after initial macrolide treatment did not differ between PMC and CST groups (5.1 vs. 4.2 days, P = 0.085), PMC and DXC groups (4.9 vs. 5.7 days, P = 0.453), and PMC and LFX groups (4.4 vs. 5.0 days, P = 0.283). No side effects were observed in the CST, DXC, and LFX groups. Conclusion:The change to secondary treatment did not show better efficacy compared to PMC in children with macrolide-unresponsive MP pneumonia. Further studies are needed to guide appropriate treatment in children with MP pneumonia.

译文

背景:我们旨在比较延长的大环内酯(PMC),皮质类固醇(CST),强力霉素(DXC)和左氧氟沙星(LFX)对儿童对大环内酯无反应性肺炎支原体(MP)肺炎的疗效,并评估其安全性二级治疗剂。
方法:我们回顾性分析2015年1月至2017年4月住院的MP肺炎患者的数据。临床定义大环内酯无反应性,并在大环内酯治疗后≥72小时持续发烧≥38.0°C。病例分为四类:PMC,CST,DXC和LFX。我们使用倾向评分匹配分析,通过调整比较了每组中二次治疗后的去铁时间(TTD)和初始大环内酯类药物治疗后的TTD。
结果:在1,165例MP肺炎患者中,有190例(16.3%)对大环内酯类药物无反应。 CST,DXC和LFX组在48小时内达到退热的患者比例分别为96.9%(31/33),85.7%(12/14)和83.3%(5/6)。 PMC和CST组(5.1 vs.4.2天,P = 0.085),PMC和DXC组(4.9 vs. 5.7天,P = 0.453),PMC和LFX组(4.4 vs. 5.0天,P = 0.283)。在CST,DXC和LFX组中未观察到副作用。
结论:对大环内酯无反应的MP肺炎患儿,与PMC相比,二级治疗的改变没有显示出更好的疗效。需要进一步研究以指导MP肺炎患儿的适当治疗。

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