Abstract
Background: Legionella native valve endocarditis is exceedingly rare, and to the best of our knowledge, this is the first case complicated by a septic spleen infarction.
Highlights
The incidence of infectious endocarditis worldwide is estimated at 30/100.000 cases per year
Streptococcus and Staphylococcus species are the cause for endocarditis in about 80%, another 10% are caused by Enterococcus species or bacteria of the HACEK-group
Leucocytes were at 9.5 G/l with a marked left shift (36%), C-reactive protein (CRP) was highly elevated at 333 mg/l, and serum creatinine was 117 μmol/l
Summary
The incidence of infectious endocarditis worldwide is estimated at 30/100.000 cases per year. In Western Europe and North America endocarditis on native valves show an incidence of 2-6/100.000 per year [1, 2]. Streptococcus and Staphylococcus species are the cause for endocarditis in about 80%, another 10% are caused by Enterococcus species or bacteria of the HACEK-group. According to Barnes et al culture negative endocarditis accounts for 2.5 to 31% of all cases [3]. Negative blood cultures often result from previous antimicrobial therapy or fastidious bacteria Legionella native valve endocarditis is exceedingly rare, and to the best of our knowledge, this is the first case complicated by a septic spleen infarction.
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