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Chinese Journal of Critical Care & Intensive Care Medicine(Electronic Edition) ›› 2024, Vol. 10 ›› Issue (01): 16-24. doi: 10.3877/cma.j.issn.2096-1537.2024.01.003

• Clinical Research • Previous Articles    

Ceftazidime-Avibactam versus polymyxin B in the treatment of pneumonia caused by carbapenem-resistant Klebsiella pneumoniae pneumonia

Ying Shi1, Jing Hu2, Peiben Liu2, Tingting Wang2, Xiangrong Zuo2, Quan Cao2,()   

  1. 1. Department of Critical Care Medicine, Northern Jiangsu People's Hospital of Jiangsu Province, Yangzhou 225002, China;Department of Critical Care Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
    2. Department of Critical Care Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
  • Received:2023-02-06 Online:2024-02-28 Published:2024-04-01
  • Contact: Quan Cao

Abstract:

Objective

To assess the efficacy and safety of Ceftazidime-Avibactam (CAZ-AVI) versus polymyxin B-based anti-infective therapy in patients with severe carbapenem-resistant Klebsiella pneumoniae (CRKP) pneumonia.

Methods

From June 2019 to September 2020, the data from patients in ICU of the First Affiliated Hospital of Nanjing Medical University were retrospectively analyzed. These patients were diagnosed with pneumonia caused by CRKP and were treated with either CAZ-AVI or polymyxin B-based anti-infective therapy. Clinical and microbiologic cure rates, 28-day survival, and safety evaluation were compared between patients in two groups.

Results

Among the 86 subjects, CRKP clearance was 71.7% (33/46) in the CAZ-AVI group and 45.0% (18/40) in the polymyxin B group, there was significant difference between two groups (χ2=6.338, P=0.012). The clinical cure rate was 52.2% (24/46), the 28-day survival rate was 69.6% (32/46) in the CAZ-AVI group while 32.5% (13/40) and 75.0% (30/40) in polymyxin B group, there were no significant difference between two groups (χ2=3.378, P=0.066; χ2=0.314, P=0.575). The multivariate logistic regression analysis and propensity score (PS) regression adjustment method were employed. The results indicated that the clinical cure rate was significantly higher in the CAZ-AVI group compared to the polymyxin B group (P values of 0.017 and 0.025, respectively). The adjusted odds ratios (ORs) and 95% confidence intervals (CIs) were 3.550 (1.250-10.078) and 3.062 (1.150-8.149), respectively. The microbial clearance in CAZ-AVI patients was significantly higher relative to the polymyxin B group (P values: 0.012, 0.015, respectively), adjusted ORs and 95% CIs were 3.320 (1.308-8.427), 3.297 (1.259-8.637). There was no significant difference in 28-day survival between the 2 groups (P values were 0.990 and 0.850, respectively). The CAZ-AVI group had a lower incidence of adverse reactions when compared with the polymyxin B group (8.7% vs 30.0%, χ2=6.413, P =0.011).

Conclusion

CAZ-AVI be a reasonable alternative to polymyxin B in the treatment of pneumonia caused by CRKP.

Key words: Carbapenem-resistant Klebsiella pneumoniae, Polymyxin B, Ceftazidime-Avibactam, Clinical outcomes, Safety evaluation

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