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Prolonged incubation time does not increase sensitivity for the diagnosis of implant-related infection using samples prepared by sonication of the implants.
Bone Joint J. 2013 Jul;95-B(7):1001-6
Authors: Esteban J, Alvarez-Alvarez B, Blanco A, Fernández-Roblas R, Gadea I, Garcia-Cañete J, Sandoval E, Valdazo M
Abstract
We have designed a prospective study to evaluate the usefulness of prolonged incubation of cultures from sonicated orthopaedic implants. During the study period 124 implants from 113 patients were processed (22 osteosynthetic implants, 46 hip prostheses, 54 knee prostheses, and two shoulder prostheses). Of these, 70 patients had clinical infection; 32 had received antibiotics at least seven days before removal of the implant. A total of 54 patients had sonicated samples that produced positive cultures (including four patients without infection). All of them were positive in the first seven days of incubation. No differences were found regarding previous antibiotic treatment when analysing colony counts or days of incubation in the case of a positive result. In our experience, extending incubation of the samples to 14 days does not add more positive results for sonicated orthopaedic implants (hip and knee prosthesis and osteosynthesis implants) compared with a conventional seven-day incubation period. Cite this article: Bone Joint J 2013;95-B:1001-6.
PMID: 23814257 [PubMed - in process]
Read more... http://www.ncbi.nlm.nih.gov/pubmed/23814257?dopt=Abstract
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