© 2003 by BMJ Publishing Group & British Cardiac Society
EDITORIAL
Diagnosis of culture negative endocarditis: novel strategies to prove the suspect guilty
Klinik für Kardiologie, Universitätsklinikum Essen, Germany
Correspondence to:
Correspondence to:
Dr Christoph K Naber, Klinik für Kardiologie, Universitätsklinikum Essen, Hufelandstrasser 55, 45122 Essen, Germany;
Christoph.naber@medizin.uni-essen.de
Negative blood cultures can occur in up to a third of all cases of infective endocarditis, which often delays diagnosis and onset of treatment with profound impact on the clinical outcome. Thus novel strategies for the identification of culture negative cases are highly desirable
Keywords: Duke criteria; culture negative endocarditis; endocarditis
| The first 150 words of the full text of this article appear below. |
The diagnosis of infective endocarditis with its multiple clinical and morphological manifestations remains a challenging task. The von Reyn criteria, published in 1981, focused mainly on clinical and pathological findings in combination with positive blood culture to diagnose infective endocarditis.1 They were helpful to standardise diagnostic criteria, but their positive and negative predictive values remained unacceptably low, especially in the absence of positive blood culture results. With the introduction of transoesophageal echocardiography for the diagnosis of infective endocarditis,2 and the implementation of this method into the diagnostic criteria by Durack and colleagues,3 sensitivity and specificity of the diagnosis was significantly increased.4 Yet, in culture negative cases, sensitivity of these Duke criteria remains limited.5,6
In most cases, there are two reasons for negative blood cultures: (1) patients received antibiotics before blood cultures are taken due to systemic infection or suspected diagnosis of a bacterial infection; and (2) the causative microorganisms have
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