ICU-acquired infections in immunocompromised patients

Area of Science:

• Critical Care Medicine
• Infectious Diseases
• Immunology

Background:

• Immunocompromised patients represent a growing and heterogeneous ICU population.
• Many ICU patients, even without apparent immunosuppression, develop immune deficiencies.
• Limited data exist on ICU-acquired infections in this vulnerable group.

Purpose of the Study:

• To review the incidence, microbiology, management, and outcomes of ICU-acquired infections in immunocompromised patients.
• To highlight epidemiological specificities and multidrug-resistant bacteria dynamics.
• To discuss fungal and viral infections and suggest future research areas.

Main Methods:

• Review of recent large observational studies.
• Analysis of epidemiological data on ICU-acquired infections.
• Discussion of diagnostic and therapeutic strategies for fungal and viral infections.

Main Results:

• Ventilator-associated lower respiratory tract infections and bloodstream infections are common.
• Specific epidemiological patterns and multidrug-resistant bacteria dynamics are observed.
• Immunocompromised patients have increased risk for fungal and viral infections.

Conclusions:

• Immunocompromised patients are disproportionately affected by ICU-acquired infections.
• Exclusion from trials limits evidence-based guidelines for this population.
• Further research is crucial to improve management and outcomes.