Empirical antibiotic therapy for fever in neutropenic patients
1Department of Medical Specialties, University of Texas M. D. Anderson Cancer Center, Houston 77030.
Abstract:
The necessity for administering empirical antibiotic therapy to febrile neutropenic patients has been well-established; however, no single regimen has been uniformly accepted. During the past decade, gram-positive organisms, often methicillin-resistant, have emerged as significant pathogens. The routine use of vancomycin may be appropriate at some institutions, but its widespread use may lead to resistance. The role of aminoglycosides as part of routine empirical regimens is controversial, and single extended-spectrum beta-lactam agents are often adequate therapy. Not all beta-lactam agents are equally effective, and some gram-negative pathogens, such as Xanthomonas maltophilia, are resistant to many of them. Pneumonia is frequent, the infecting pathogen is often undetermined, and therapy is unsatisfactory. Outpatient antibiotic therapy can be used in selected neutropenic patients. Empirical antibiotic regimens should be selected on the basis of knowledge about predominant pathogens and antibiotic susceptibilities at each institution as much as on the basis of studies from other institutions reported in the literature.
Insights
Empirical antibiotic therapy for febrile neutropenic patients requires careful selection of regimens. Emerging gram-positive pathogens and resistance patterns necessitate individualized treatment strategies based on local data.
Area of Science:
- Infectious Diseases
- Hematology
- Pharmacology
Background:
- Febrile neutropenia necessitates prompt empirical antibiotic therapy.
- Increasing prevalence of gram-positive pathogens, including methicillin-resistant strains, complicates treatment.
- Established regimens lack universal acceptance, highlighting the need for adaptable strategies.
Purpose of the Study:
- To review current approaches to empirical antibiotic therapy for febrile neutropenic patients.
- To discuss the evolving landscape of pathogens and resistance patterns.
- To emphasize the importance of institutional antibiograms in guiding therapy selection.
Main Methods:
- Literature review of studies on empirical antibiotic therapy in febrile neutropenia.
- Analysis of trends in pathogen prevalence and antibiotic resistance.
- Discussion of the role of specific antibiotic classes (e.g., vancomycin, aminoglycosides, beta-lactams).
Main Results:
- No single empirical antibiotic regimen is universally optimal.
- Gram-positive organisms are increasingly significant pathogens.
- Resistance to certain agents (e.g., beta-lactams against Xanthomonas maltophilia) is a concern.
- Pneumonia is a frequent complication with often undetermined pathogens.
Conclusions:
- Empirical antibiotic selection should be guided by institutional pathogen prevalence and susceptibility data.
- Widespread vancomycin use may promote resistance.
- Outpatient therapy is a viable option for selected patients.
- Continuous evaluation of local resistance patterns is crucial for effective management.
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