Arles

Researchers are evaluating the timing of antibiotic therapy for patients suspected of having non-severe ventilator-associated pneumonia VAP in intensive care units. This study compares immediate antibiotic treatment started right after respiratory sampling with a conservative approach that waits for microbiological confirmation before beginning treatment. Delaying antibiotics may reduce unnecessary use and antibiotic resistance but might risk worse outcomes if infection is present. The study is a randomized controlled trial led by Nantes University Hospital to better understand these strategies in patients without severe symptoms like septic shock or severe respiratory distress. The trial has two groups the immediate strategy group receives empiric antibiotics within one hour after randomization based on clinical judgment and local protocols. If respiratory samples later test negative, antibiotics are stopped if positive, targeted therapy continues for seven days. The conservative strategy group does not start antibiotics until respiratory sample cultures or PCR results confirm infection. If confirmed, appropriate antibiotics are administered for seven days without waiting for susceptibility testing. Both approaches focus on managing suspected VAP to balance timely treatment and antibiotic stewardship. Participants will be monitored from day 0 to day 28, with assessments including mortality and mechanical ventilation status at day 28 as the main outcome. Additional evaluations cover organ failure scores, lung infection scores, duration of ventilation, use of supportive therapies, hospital and ICU stay lengths, infection incidence, antibiotic use, and cost-utility analysis up to day 90. The study involves informed consent, respiratory sampling within two hours of suspicion, and excludes patients with severe VAP or significant immunosuppression. This comprehensive follow-up aims to clarify the impact of antibiotic timing on patient outcomes and antibiotic resistance in ICU settings.