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Chinese Journal of Experimental and Clinical Infectious Diseases(Electronic Edition) ›› 2016, Vol. 10 ›› Issue (06): 698-702. doi: 10.3877/cma.j.issn.2016.06.010

• Clinical Research Article • Previous Articles     Next Articles

Clinical characteristics and antimicrobial resistance of bloodstream infections caused by Klebsiella pneumoniae in hospitalized patients

Yuanyuan Duan1, Jingrong Cao1,(), Rong Min1, Lili Zhang1, Qiyan Zhao1, Yuying Wang1, Wei Xie1, Peichang Wang1   

  1. 1. Department of Clinica Laboratory, Xuanwu Hospital of Capital Medical University, Beijing 100053, China
  • Received:2015-12-16 Online:2016-12-15 Published:2021-09-08
  • Contact: Jingrong Cao

Abstract:

Objective

To investigate the clinical characteristics and antimicrobial resistance of bloodstream infections (BSI) caused by K. pneumoniae in hospitalized patients and to provide a reference for the clinical treatment of K. pneumoniae.

Methods

Clinical data, laboratory results and antibiotic resistance of K. pneumoniae isolated from patients with blood infection from January 2011 to January in 2015 were reviewed, retrospectively. The identification of isolates and antimicrobial susceptibility testing were done by Vitek-2 compact. The antimicrobial resistance were analyzed by Whonet 5.6 software.

Results

Total of 75 clinical isolates of K. pneumoniae were mainly distributed in the wards of ICU, departments of general surgery, hematology and emergency. BSI caused by K. pneumoniae tends to develop into serious complications, and the top complications were pulmonary infection (46.67%), cerebral diseases (30.67%), diabetes (29.33%), biliary tract diseases (18.67%), low hemoglobin (18.67%), kidney dysfunction (14.67%) and tumer (13.33%). There were 15 (20.00%) cases suffered from sepsis or septic shock. The isolated rate of ESBLs-producing K. pneumoniae was 42.67%, and the resistance rates to meropenem, imipenem and ertapenem were 6.67%, 10.67% and 8.00%, respectively. The resistance rates of K. pneumoniae to piperacillin/tazobactam (16.00%) and amikacin (10.67%) were less than 20%. The total mortality rate was 25.33%, and the mortality rate of patients in MDR group (29.73%) was higher than that of non-MDR group (21.05%). Septic shock and whether stay in the ICU were the risk factors for K. pneumoniae BSI patients (χ2= 18.91, 6.63; P = 0.025, 0.01).

Conclusions

K. pneumoniae BSI tend to develop into serious complications, the higher mortility and the emergence of carbapenems-resistant K. pneumoniae isolates should be emphasized to the clinic.

Key words: Bloodstream infections, Klebsiella pneumoniae, Antimicrobial resistance, Carbapenems

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