Laboratory Medicine ›› 2024, Vol. 39 ›› Issue (3): 265-271.DOI: 10.3969/j.issn.1673-8640.2024.03.010

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Clinical characteristics,drug resistance and poor prognosis factors in children with invasive pneumococcal disease with necrotizing pneumonia

MA Chen, ZHANG Yi, LI Fang, WANG Jing, CHEN Wei()   

  1. Department of Clinical Laboratory,the First Affiliated Hospital of Xi'an Jiao Tong University,Xi'an 710061,Shaanxi,China
  • Received:2022-12-06 Revised:2024-01-24 Online:2024-03-30 Published:2024-04-24

Abstract:

Objective To investigate the clinical characteristics,drug resistance and poor prognosis factors for invasive pneumococcal disease(IPD)with necrotizing pneumonia(NP). Methods A total of 158 children with IPD with NP from the First Affiliated Hospital of Xi'an Jiao Tong University from June 2018 to June 2022 were enrolled as observation group,and 92 mycoplasma pneumoniae patients with NP were enrolled as control group. The clinical manifestations and laboratory indexes were compared. In vitro drug susceptibility test was performed. The observation group was classified into poor prognosis group(26 cases)and good prognosis group(132 cases)according to whether there was poor prognosis. Multivariate Logistic regression analysis was used to screen the influencing factors of poor prognosis in children with IPD and NP,and the prediction model of nomographic chart was constructed and evaluated. Receiver operating characteristic(ROC)curve was used to evaluate the prediction efficiency of the nomographic chart prediction model. Results In the observation group,fever time,breathless incidence rate,C-reactive protein(CRP),white blood cell(WBC)count,the absolute value of neutrophils (NEUT#),tumor necrosis factor-alpha(TNF-α),procalcitonin(PCT)levels and pleural effusion lactate dehydrogenase(LDH),WBC count and glucose level were higher than those in control group(P<0.05). Streptococcus pneumoniae was more sensitive to vancomycin,levofloxacin and linezolid,but less sensitive to erythromycin and clindamycin. CRP>161.75 mg·L-1,WBC count>20.24×109/L,NEUT#>0.86×109/L,PCT>2.98 μg·L-1,blood sodium <2.24 mmol·L-1 and blood calcium<136.35 mmol·L-1 were associated with poor prognosis in children with IPD and NP(P<0.05). Conclusions The children with IPD and NP have a long fever time and are prone to breathless. The infected isolates are sensitive to vancomycin,levofloxacin and linezolid. High levels of CRP,WBC count,NEUT#,PCT and low levels of blood sodium and blood calcium are associated with poor prognosis in children with IPD and NP.

Key words: Invasive pneumococcal disease, Necrotizing pneumonia, Clinical characteristic, Drug resistance, Prognosis

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