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Management of invasive fungal infections in the intensive care unit
Dara Chean1, Alice Friol2, Elie Azoulay2
1Service de Réanimation Polyvalente, Centre Hospitalier de Laval, Laval, France.
Introduction:
Invasive fungal infections (IFI) are becoming more and more frequent in the intensive care unit (ICU), affecting not only immunocompromised patients. Invasive pulmonary aspergillosis, invasive candidiasis, and mucormycosis are associated with substantial mortality. Management of these patients remains challenging because the histopathological confirmation is often unfeasible. Consequently, clinicians must rely on a probabilistic approach integrating host factors, clinical and radiological features, and mycological evidence.
Areas Covered:
This narrative review summarizes current evidence on the epidemiology, risk factors, definitions, diagnostic strategies, and management of critically ill patients with IFI. We discuss adaptations of diagnostic criteria for critically ill patients, with a special focus on performance and limitations of non-culture-based tools. Diagnostic work-up and therapeutic strategies are discussed with a focus on ICU-specific considerations.
Expert Opinion:
Management of IFI in the ICU requires an individualized approach combining early clinical suspicion based on clinical risk stratification, targeted use of culture and non-culture-based tests, and timely initiation of antifungal therapy. Refining risk stratification, validation of molecular diagnostics in large ICU cohorts, and multidisciplinary collaboration are warranted to improve outcomes in this highly vulnerable population.
Insights
Invasive fungal infections (IFI) are increasing in ICUs. Early suspicion, targeted diagnostics, and prompt antifungal therapy are crucial for managing critically ill patients with IFI.
Area of Science:
- Critical Care Medicine
- Infectious Diseases
- Mycology
Background:
- Invasive fungal infections (IFI) are increasingly prevalent in intensive care units (ICUs).
- These infections, including aspergillosis, candidiasis, and mucormycosis, carry high mortality rates.
- Diagnosis is challenging due to difficulties in obtaining histopathological confirmation.
Purpose of the Study:
- To review current evidence on the epidemiology, risk factors, and management of IFI in critically ill patients.
- To discuss adaptations of diagnostic criteria and the role of non-culture-based tools in the ICU.
- To outline ICU-specific diagnostic and therapeutic strategies for invasive fungal infections.
Main Methods:
- This narrative review synthesizes existing literature on IFI in the ICU.
- It examines epidemiological data, risk factors, and diagnostic approaches.
- Management strategies, including antifungal therapy and diagnostic testing, are discussed.
Main Results:
- IFI management in ICUs necessitates a probabilistic approach integrating host factors, clinical signs, and mycological data.
- Non-culture-based diagnostic tools show promise but require further validation in ICU cohorts.
- Effective management hinges on early clinical suspicion and timely intervention.
Conclusions:
- Optimal management of IFI in critically ill patients requires an individualized strategy.
- This includes robust clinical risk stratification, judicious use of diagnostic tests, and prompt antifungal treatment.
- Further research into risk stratification and molecular diagnostics is essential to improve patient outcomes.
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