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Inadequate antimicrobial treatment: an important determinant of outcome for hospitalized patients
1Department of Internal Medicine, Pulmonary and Critical Care Division, Washington University School of Medicine, St. Louis, MO 63110, USA. mkollef@pulmonary.wustl.edu
Abstract:
Inadequate antimicrobial treatment, generally defined as microbiological documentation of an infection that is not being effectively treated, is an important factor in the emergence of infections due to antibiotic-resistant bacteria. Factors that contribute to inadequate antimicrobial treatment of hospitalized patients include prior antibiotic exposure, use of broad-spectrum antibiotics, prolonged length of stay, prolonged mechanical ventilation, and presence of invasive devices. Strategies to minimize inadequate treatment include consulting an infectious disease specialist, using antibiotic practice guidelines, and identifying quicker methods of microbiological identification. In addition, clinicians should determine the prevailing pathogens that account for the community-acquired and nosocomial infections identified in their hospitals. Clinicians can improve antimicrobial treatment by using empirical combination antibiotic therapy based on individual patient characteristics and the predominant bacterial flora and their antibiotic susceptibility profiles. This broad-spectrum therapy can then be narrowed when initial culture results are received. Further study evaluating the use of antibiotic practice guidelines and strategies to reduce inadequate treatment is necessary to determine their impact on patient outcomes.
Insights
Inadequate antimicrobial treatment contributes to antibiotic resistance. Strategies like consulting specialists and using guidelines can improve treatment effectiveness for hospital-acquired infections.
Area of Science:
- Infectious Diseases
- Microbiology
- Hospital Epidemiology
Background:
- Inadequate antimicrobial treatment is a key driver for the emergence of antibiotic-resistant bacteria.
- Several factors in hospitalized patients, including prior antibiotic use and invasive devices, contribute to inadequate treatment.
- Understanding these factors is crucial for developing effective antimicrobial stewardship strategies.
Purpose of the Study:
- To highlight the significance of inadequate antimicrobial treatment in the rise of antibiotic resistance.
- To identify factors contributing to inadequate treatment in hospitalized patients.
- To propose strategies for minimizing inadequate antimicrobial treatment and improving patient outcomes.
Main Methods:
- Review of factors contributing to inadequate antimicrobial treatment in hospitalized patients.
- Identification of strategies to minimize inadequate treatment, including specialist consultation and guideline adherence.
- Emphasis on understanding local pathogen prevalence and antibiotic susceptibility.
Main Results:
- Prior antibiotic exposure, broad-spectrum antibiotic use, prolonged hospitalization, mechanical ventilation, and invasive devices are associated with inadequate treatment.
- Consulting infectious disease specialists, utilizing antibiotic practice guidelines, and rapid microbiological identification can improve treatment.
- Tailoring empirical combination therapy based on patient characteristics and local flora, followed by de-escalation, is recommended.
Conclusions:
- Minimizing inadequate antimicrobial treatment is essential to combat antibiotic resistance.
- Implementing strategies such as specialist consultation, guideline use, and tailored empirical therapy can enhance antimicrobial effectiveness.
- Further research is needed to evaluate the impact of these strategies on patient outcomes.