Clinical Outcomes of High-Dose Ampicillin-Sulbactam Combined with Colistin in the Treatment of Ventilator-Associated Pneumonia Caused by Carbapenem-Resistant Acinetobacter baumannii.

< 0.001). High-dose ampicillin-sulbactam combined with colistin significantly improves microbiological clearance and survival in patients with CRAB-VAP. Despite a higher incidence of transient nephrotoxicity, the regimen provides a substantial survival benefit.