• R B Brown, J A Kruse, G W Counts, J A Russell, N V Christou, and M L Sands.
• Infectious Disease Division, Baystate Medical Center, Springfield, Massachusetts 01199.
• Antimicrob. Agents Chemother. 1990 Feb 1; 34 (2): 269-72.

AbstractA prospective, double-blind, placebo-controlled study was conducted to determine the safety and efficacy of endotracheal tobramycin (ETT) for treatment of gram-negative bacterial pneumonia. Patients were randomized to either 40 mg of tobramycin or a placebo instilled endotracheally every 8 h. Patients also received intravenous tobramycin plus either cefazolin or piperacillin. Of 85 patients enrolled, 41 were assessable. Most microbiologic diagnoses were made by endotracheal aspiration with strict grading criteria. The clinical-radiographic responses of patients and standard demographic data were recorded. Pseudomonas aeruginosa, "multiple pathogens," and Klebsiella-Enterobacter-Serratia-Citrobacter species were isolated in 41, 32, and 15% of the instances, respectively. Causative pathogens were eradicated from sputum significantly more frequently by patients who received ETT (P less than 0.05). However, no significant differences were noted in the clinical outcomes of the two study groups. No local adverse reactions attributable to the administration of this agent were observed, but four patients had supraventricular tachycardia, compared with none who received the placebo (P = 0.053). ETT may be considered as adjunctive therapy for seriously ill individuals.

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