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Published on: November 5, 2019
Chryseobacterium meningosepticum infection: antibiotic susceptibility and risk factors for mortality
Po-Pin Hung1, Yu-Hui Lin, Chin-Fu Lin
1Division of Infectious Diseases, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan.
Background And Purpose:
A limited range of antibiotic classes are available for treatment of Chryseobacterium meningosepticum infections. Although the role of C. meningosepticum in newborn infections and immunocompromised hosts has been recognized, clinical data detailing these infections remain limited. This retrospective study investigated the risk factors for mortality in patients with C. meningosepticum infections and the antibiotic susceptibility of clinical isolates.
Methods:
Information on demographic characteristics, clinical parameters, antibiotic treatment, and outcomes was collected. Statistical significance of potential prognostic parameters was analyzed by Fisher's exact test. The antimicrobial susceptibility of 19 isolates to seven antibiotics was determined, and susceptibility results were presented as minimal inhibitory concentration (MIC) range, MIC at which 50% of isolates were inhibited (MIC(50)), and MIC at which 90% of isolates were inhibited (MIC(90)).
Results:
Hypoalbuminemia (<2.5 g/dL) [p=0.02] and increased pulse rate (p=0.008) at the onset of infection, and presence of an indwelling central venous line (p=0.04) were associated with poor outcomes. Use of appropriate antibiotics was not significantly associated with the clinical outcome (p=0.21). MIC values of levofloxacin (MIC(50)/(90), 0.12/2 microg/mL) were lower than those of ciprofloxacin (0.5/4 microg/mL).
Conclusion:
Hypoalbuminemia, increased pulse rate at the onset of infection and presence of central venous line infection were associated with a poor outcome in patients with C. meningosepticum.
Insights
Hypoalbuminemia, increased pulse rate, and central venous line infections are risk factors for poor outcomes in Chryseobacterium meningosepticum infections. Antibiotic choice did not significantly impact patient survival in this study.
Area of Science:
- Infectious Diseases
- Clinical Microbiology
- Critical Care Medicine
Background:
- Limited antibiotic options exist for Chryseobacterium meningosepticum infections.
- The role of C. meningosepticum in neonates and immunocompromised patients is recognized, but clinical data are scarce.
- This study addresses the limited clinical data on C. meningosepticum infections.
Purpose of the Study:
- To investigate risk factors for mortality in patients with C. meningosepticum infections.
- To determine the antibiotic susceptibility profiles of clinical C. meningosepticum isolates.
- To identify prognostic indicators for C. meningosepticum infections.
Main Methods:
- Retrospective analysis of patient data, including demographics, clinical parameters, and treatment.
- Statistical analysis using Fisher's exact test to identify prognostic parameters.
- Antimicrobial susceptibility testing of 19 isolates against seven antibiotics, reporting MIC values.
Main Results:
- Hypoalbuminemia, elevated pulse rate, and central venous line presence were associated with poor outcomes (p<0.05).
- Appropriate antibiotic use did not show a significant association with clinical outcomes (p=0.21).
- Levofloxacin demonstrated lower MIC values (MIC50/90: 0.12/2 µg/mL) compared to ciprofloxacin (MIC50/90: 0.5/4 µg/mL).
Conclusions:
- Hypoalbuminemia, increased pulse rate, and central venous line infections are significant predictors of poor outcomes.
- These findings highlight key clinical factors associated with mortality in C. meningosepticum infections.
- Antibiotic susceptibility data provide insights into treatment options, with levofloxacin showing promising activity.
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