Abstract
Objective: To evaluate the effect of a method of Selective Decontamination of the Digestive Tract (SDD) on colonization, nosocomial infection (NI), bacterial resistance, mortality and economic costs.Design: Randomized, double blind, placebo controlled study.Setting: Polyvalent intensive care unit (ICU) of a tertiary care hospital with 27 beds.Patients: 101 patients with >3 days of mechanical ventilation and >5 days of stay, without infection at the start of the study. 47 belonged to the Treated Group (TG) and 54 to the Placebo Group (PG).Interventions: The TG was given Cefotaxime i.v. (6 g/day) for the first four days and an association of Polymyxin E, Tobramycin and Amphothericin B at the oropharyngeal and gastrointestinal level throughout the whole stay.Results: In the TG, colonization by gram-negative agents at oropharyngeal, tracheal and gastrointestinal level fell significantly. There was a significant drop in the overall, respiratory and urinary NI (26% vs 63%,p<0.001; 15% vs 46%,p<0.001; 9% vs 31%,p<0.01). The overall mortality and NI related mortality was less in the TG (21% vs 44%,p<0.05; 2% vs 20%,p<0.01). The economic costs, mechanical ventilation time and length of stay were similar. The percentage of bacterial isolations resistant to Cefotaxime and Tobramycin was greater in the TG (38% vs 15% and 38% vs 9%,p<0.001).Conclusions: colonization by gram-negative bacilli, NI and the mortality related to it can be modified by SDD. Continuous bacteriological surveillance is necessary.
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Rocha, L.A., Martín, M.J., Pita, S. et al. Prevention of nosocomial infection in critically ill patients by selective decontamination of the digestive tract. Intensive Care Med 18, 398–404 (1992). https://doi.org/10.1007/BF01694341
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DOI: https://doi.org/10.1007/BF01694341