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Nosocomial lower respiratory tract infections are a common cause of morbidity and mortality in intensive care unit (ICU) patients. Although many studies have investigated the management and prevention of ventilator-associated pneumonia (VAP), few have focused on ventilator-associated tracheobronchitis (VAT). In this issue of Critical Care, Nseir and coworkers present interesting data from a randomized controlled study of antimicrobial therapy for VAT. Patients randomly assigned to antibiotic therapy had more mechanical ventilation-free days (P < 0.001), fewer episodes of VAP (13% versus 47%; P < 0.001), and a lower ICU mortality rate (18% versus 47%; P = 0.05) than those without antibiotic therapy. Although this study has limitations, the data suggest that VAT may be an important risk factor for VAP or overlap with early VAP. More importantly, targeted antibiotic therapy for VAT may improve patient outcomes and become a new paradigm for prevention or early therapy for VAP.

Ventilator-associated tracheobronchitis (VAT): questions, answers, and a new paradigm?