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Invasive Candidiasis in the Intensive Care Unit: Where Are We Now?
Jose A Vazquez1, Lissette Whitaker1, Ana Zubovskaia1
1Division of Infectious Disease, Medical College of Georgia, Augusta University, 1120 15th Street, Augusta, GA 30912, USA.
Abstract:
Invasive fungal infections in the intensive care unit (ICU) are not uncommon and most cases are caused by Candida species, specifically Candida albicans. However, recently, there has been an increase in non-albicans Candida spp. (C. glabrata; C. parapsilosis) causing invasive fungal infections. This has led to an increasing awareness of this infection due to the increase in documented antifungal resistance in many of these Candida species. In addition, manifestations of invasive candidiasis are often non-specific, and the diagnosis remains extremely challenging. Unfortunately, delays in antifungal therapy continue to hamper the morbidity; length of stay; and the mortality of these infections. Although the echinocandins are the drugs of choice in these infections, antifungal resistance among the non-albicans species (C. glabrata; C. krusei; C. auris; C. parapsilosis) is being observed more frequently. This has led to an increase in morbidity and mortality, specifically in critically ill patients. Overall, the diagnosis and management of invasive candidiasis in the ICU remain challenging. It is imperative that the critical care physician keeps this infection at the forefront of their differential diagnosis in order to decrease the mortality rate of these individuals. In this review, we discuss the current epidemiologic trends, diagnosis, and management of invasive candidiasis in the intensive care unit setting.
Insights
Invasive fungal infections caused by non-albicans Candida species are rising in ICUs. Increased antifungal resistance complicates treatment, highlighting the need for prompt diagnosis and management to reduce patient mortality.
Area of Science:
- Critical Care Medicine
- Infectious Diseases
- Mycology
Background:
- Invasive fungal infections, primarily candidiasis, are common in intensive care units (ICUs).
- While *Candida albicans* is historically dominant, non-*albicans Candida* species are increasingly implicated.
- Rising antifungal resistance in these species poses a significant clinical challenge.
Purpose of the Study:
- To review current epidemiologic trends of invasive candidiasis in the ICU.
- To discuss the diagnostic challenges associated with invasive candidiasis.
- To outline contemporary management strategies for invasive candidiasis in critically ill patients.
Main Methods:
- Review of current literature on invasive candidiasis in ICU settings.
- Analysis of epidemiologic trends, focusing on *Candida* species distribution.
- Evaluation of diagnostic approaches and antifungal treatment guidelines.
Main Results:
- Increasing incidence of invasive infections caused by non-*albicans Candida* species (*C. glabrata*, *C. parapsilosis*).
- Growing antifungal resistance observed in *Candida* species, complicating treatment options.
- Non-specific clinical manifestations and diagnostic delays contribute to increased morbidity and mortality.
Conclusions:
- Invasive candidiasis diagnosis and management in ICUs remain challenging.
- Prompt recognition and appropriate antifungal therapy are crucial for improving outcomes.
- Critical care physicians must maintain a high index of suspicion for invasive candidiasis.
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