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- W2000207254 abstract "BACKGROUND/AIMS. The aetiology of infective endocarditis (IE) can be determined directly from surgically removed valve tissue using broad‐range bacterial rDNA polymerase chain reaction (PCR) followed by sequencing. We sought to assess the value of this methodology in a routine clinical setting.METHODS. Broad‐range PCR with primers targeting conserved bacterial rDNA sequences was applied to directly analyse valve samples from 56 patients operated on for diagnosed or suspected IE. Identification of the aetiological agent was performed by partial DNA sequencing of the 16S and 23S rDNA genes.RESULTS. The final diagnosis was definite IE in 36 patients and possible IE in 2 patients, while the diagnosis of IE was rejected in 18 patients. PCR analysis from removed valve tissue was positive in 25 patients with IE. Molecular identification was consistent with the blood culture finding in 20 of these patients. The PCR approach was the only method to yield the aetiological diagnosis in additional 4 patients (2 Staphylococcus species, 1 Streptococcus bovis, 1 Bartonella quintana), all of whom had received antimicrobials before blood cultures were taken. The mean duration of preoperative antimicrobial treatment for the patients with PCR‐positive valves was 19.6 (range 1–58) days.CONCLUSIONS. Bacterial DNA may persist during treatment in infected valves for long periods. The PCR method is especially useful when the causative agent of IE is fastidious or when the specimen is taken during antimicrobial treatment." @default.
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- W2000207254 date "2006-01-01" @default.
- W2000207254 modified "2023-10-18" @default.
- W2000207254 title "Aetiological diagnosis of infective endocarditis by direct amplification of rRNA genes from surgically removed valve tissue. An 11‐year experience in a Finnish teaching hospital" @default.
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- W2000207254 doi "https://doi.org/10.1080/07853890600622119" @default.
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