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OBJECTIVE: To determine the efficacy of liquid ventilation using a medical-grade perfluorocarbon (perflubron) combined with parenteral or intratracheal antibiotics in a rat model of pneumonia. DESIGN: Prospective, laboratory investigation. SETTING: Experimental laboratory in a university medical center. SUBJECTS: Wistar rats (n = 112). INTERVENTIONS: One day after intratracheal inoculation with Streptococcus pneumoniae, rats received one of five experimental treatments or no treatment (control): modified liquid ventilation (MLV), intramuscular ampicillin, MLV plus intramuscular ampicillin, MLV with intratracheal ampicillin, or MLV plus ampicillin PulmoSpheres. MEASUREMENTS AND MAIN RESULTS: Animals receiving MLV plus intramuscular ampicillin, MLV with intratracheal ampicillin, or MLV plus ampicillin PulmoSpheres had significantly improved 10-day survival rates (85%, 72%, and 72%, respectively) compared with all other groups (0% to 25%). CONCLUSIONS: MLV in combination with either intramuscular, intratracheal, or PulmoSpheres ampicillin improved survival as compared with MLV alone or the same dose of antibiotics delivered intramuscularly.

Type

Journal article

Journal

Crit Care Med

Publication Date

02/2002

Volume

30

Pages

393 - 395

Keywords

Animals, Anti-Bacterial Agents, Combined Modality Therapy, Fluorocarbons, Infusions, Parenteral, Liquid Ventilation, Male, Pneumonia, Pneumococcal, Random Allocation, Rats, Rats, Wistar, Statistics, Nonparametric, Survival Analysis