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Chinese Journal of Applied Clinical Pediatrics ; (24): 601-604, 2021.
Article in Chinese | WPRIM | ID: wpr-882877


Objective:To study the early predictors of Mycoplasma pneumoniae necrotizing pneumonia in children.Methods:Clinical data of 291 children with lobar pneumonia caused by Mycoplasma pneumoniae who were hospitalized in Department of Respiratory Intervention, Qilu Children′s Hospital of Shandong University from August 2016 to September 2018, were retrospectively analyzed.The patients were divided into necrotizing pneumonia group (154 cases) and non-necrotizing pneumonia group (137 cases). After comparing clinical characteristics, laboratory tests, and bronchoscopy findings, multivariate logistic regression analysis was carried out on the indicators with statistical significance to obtain the independent predictive indicators of Mycoplasma pneumoniae necrotizing pneumonia, and then the cutoff value with the maximum diagnostic value of each indicator was found through receiver operating characteristic (ROC) curve analysis.Results:There were no significant differences in gender and age distribution, duration before admission, and platelet count between the 2 groups(all P>0.05). Necrotizing pneumonia group manifested with 11.0(8.3-14.4)×10 9/L of white blood cell count, 0.740±0.115 of neutrophil, 44.2(21.2-72.0) mg/L of C-reactive protein(CRP), 55(35-80) mm/1 h of erythrocyte sedimentation rate, 0.19(0.08-0.60) ng/L of procalcitonin, 2.63(1.62-3.79) mg/L of plasma D-dimer, 456(340-665) U/L of serum lactate dehydrogenase, (35.6±4.3) g/L of serum albumin, 121 cases(78.6%)of bronchoscopic mucosal erosion, 75 cases(48.7%)of purulent lavage, 119 cases(77.3%)of massive secretions embolism; non-necrotizing pneumonia group manifested with 8.7(6.9-11.6)×10 9/L of white blood cell count, 0.660±0.127 of neutrophil percentage, 15.9(7.5-34.3) mg/L of CRP, 45(30-60) mm/1 h of erythrocyte sedimentation rate, 0.10(0.06-0.20) ng/L of procalcitonin, 0.69(0.46-1.24) mg/L of plasma D-dimer, 314(250-419) U/L of serum lactate dehydrogenase, (38.9±3.7) g/L of serum albumin, 53 cases(38.7%)of bronchoscopic mucosal erosion, 20 cases(14.6%)of purulent lavage, and 76 cases(55.5%)of massive secretions embolism.All the above indicators had statistical differences between the 2 groups.Erythrocyte sedimentation rate, serum lactate dehydrogenase, D-dimer, and bronchoscopic mucosal erosion were independent predictors of Mycoplasma necrotizing pneumonia.The area under the ROC curve were 0.643, 0.749, 0.858 and 0.699, respectively, with the cut off point of 53 mm/1 h, 335 U/L, and 1.36 mg/L, respectively. Conclusions:Erythrocyte sedimentation rate≥53 mm/1 h, serum lactate dehydrogenase≥335 U/L, D-dimer≥1.36 mg/L, and bronchoscopic mucosal erosion are early independent predictors of Mycoplasma necrotizing pneumonia in children, among which D-dimer has the highest value.