Ventilator-associated pneumonia: pathobiological heterogeneity and diagnostic challenges

Area of Science:

• Critical Care Medicine
• Infectious Diseases
• Pulmonology

Background:

• Ventilator-associated pneumonia (VAP) affects up to 20% of intensive care unit (ICU) patients.
• VAP contributes significantly to antibiotic prescription pressure, representing half of all ICU antibiotic usage.
• VAP is linked to increased hospital stays, elevated healthcare costs, and long-term patient morbidity and mortality.

Purpose of the Study:

• To review the pathobiological heterogeneity of VAP.
• To discuss the diagnostic challenges associated with VAP.
• To explore innovative future research directions for VAP diagnosis.

Main Methods:

• Review of existing literature on VAP.
• Summary of pathobiological aspects of VAP.
• Analysis of current diagnostic limitations.

Main Results:

• VAP presents significant diagnostic difficulties despite available clinical, radiological, and microbiological tools.
• The heterogeneity in VAP's pathobiology complicates accurate diagnosis.
• Biomarkers and artificial intelligence (AI) show promise for future diagnostic advancements.

Conclusions:

• Accurate diagnosis of VAP remains a significant clinical challenge.
• Future research should focus on novel diagnostic strategies, including biomarkers and AI.
• Addressing VAP diagnostic pitfalls is crucial for improving patient outcomes and reducing healthcare burden.