PubMed · 8909021
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M Dottorini. 1996. Ventilator-associated pneumonia.. https://pubmed.ncbi.nlm.nih.gov/8909021/
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Infections are a major determinant of the outcome of solid-organ transplantation. Their incidence varies because of a number of factors. The type of organ transplanted, the degree of immunosuppression, the need for additional antirejection therapy, and the occurrence of technical or surgical complications all affect the incidence of infection after transplantation. There are 3 general time frames to consider. In the first month, bacterial and candidal infections predominate. From the second through the sixth months, infections "classically" associated with transplantation become manifest. Beyond the sixth month, the clinical course is largely determined by the presence or absence of chronic rejection.
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To determine whether routine antibiograms (summaries reporting resistance of all tested isolates) reflect resistance rates among pathogens associated with hospital-acquired infections, we compared data collected from 2 different surveillance components in the same 166 intensive care units (ICUs). ICUs reported data during the same months to both the infection-based surveillance and the laboratory-based surveillance. Paired comparisons of the percentage of isolates resistant were made between systems within each ICU. No significant differences existed (P>.05) between the percentage of isolates resistant from the infection-based system and laboratory-based system for all antimicrobial-resistant organisms studied, except methicillin resistance in Staphylococcus species. The mean difference in percentage resistance was higher from the infection-based system than the laboratory-based system for S. aureus (mean difference, +8%, P<.001) and coagulase-negative staphylococci (mean difference, +9%, P<.001). Overall, hospital antibiograms reflected susceptibility patterns among isolates associated with hospital-acquired infections. Hospital antibiograms may underestimate the relative frequency of methicillin resistance among Staphylococcus species when associated with hospital-acquired infections.