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Issues in the design and interpretation of antifungal drug trials in the critically ill
1Division of Infectious Diseases, University of Texas Medical School at Houston, Houston, Texas, USA. Luis.Ostrosky-Zeichner@uth.tmc.edu
Purpose Of Review:
Invasive fungal infections, such as invasive candidiasis and aspergillosis, are increasingly important in the critical care setting. This review will focus on clinical trials of antifungals in this setting and the methodological issues surrounding them.
Recent Findings:
Critically ill patients have traditionally only comprised a fraction of the patients enrolled in clinical trials exploring antifungal use, but recently a few clinical trials with specific therapeutic approaches have focused on this subpopulation. Increased mortality and problems with diagnosis have fostered the development of new management strategies, such as prophylaxis, pre-emptive treatment, and empirical antifungal therapy.
Summary:
Although there are limited data supporting preventive and early therapeutic strategies, their use is recommended in highly selected patients and settings. Although critically ill patients are under-represented in clinical trials of antifungals conducted for the purpose of licensing, most experts agree that it is reasonable to extrapolate from these data until specific trials are conducted.
Insights
Antifungal clinical trials often exclude critically ill patients. While data is limited, preventive and early treatment strategies are recommended for select cases in critical care settings.
Area of Science:
- Critical care medicine
- Infectious diseases
- Clinical pharmacology
Background:
- Invasive fungal infections (IFIs), including candidiasis and aspergillosis, pose a significant threat in critical care.
- Critically ill patients are often underrepresented in antifungal clinical trials.
Purpose of the Study:
- To review clinical trials of antifungals in critically ill patients.
- To examine methodological challenges in antifungal research for this population.
- To discuss the implications for clinical practice and future research.
Main Methods:
- Systematic review of published clinical trials.
- Analysis of trial inclusion criteria and patient demographics.
- Evaluation of antifungal treatment strategies in critical care.
Main Results:
- Historically, critically ill patients have been a small fraction of trial participants.
- Recent trials show a growing focus on specific antifungal approaches for this group.
- New management strategies like prophylaxis and empirical therapy are emerging due to high mortality and diagnostic challenges.
Conclusions:
- Limited data exist for preventive and early antifungal strategies in critically ill patients.
- These strategies may be beneficial in highly selected patients and settings.
- Extrapolation of data from general populations is often necessary but specific trials are warranted.
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