A retrospective survey of patients with pneumococcal infective endocarditis at the University H ospital, Leiden, over a 10-year period (1976-1986) yielded five cases. Applying strict case definitions, four patients had definite and one patient possible pneumococcal endocarditis. The commonest presenting signs and symptoms were malaise, fever, and congestive heart failure. Predisposing conditions were previous splenectomy in one case and a valve prosthesis in another. The aortic valve was the most common site o f infection, in four o f the five patients the diagnosis o f endocarditis was made during life. These patients were treated appropriately, i.e. with antibiotics to which S. pneum oniae is sensitive. In three patients, surgical intervention was performed in the acute phase because of progressive heart failure. Paravalvular abscesses were observed at surgery in all these cases. The four patients treated in our series recovered fully; the single fatal case constituted an unrecognized case of pneumococcal endocarditis. If recognized and treated appropriately (particularly with early selective surgery) endocarditis can be cured. In a statistical analysis o f 36 patients with pneumococcal endocarditis reported during the past five years, we found a significantly higher occurrence and mortality in men than in women; no other clinical features were associated with a poor outcome o f illness.
IN T R O D U C T IO NInfective endocarditis due to Streptococcus pneumoniae was a lethal condition before the availability of penicillin. Usually it was a complication of lobar pneumonia and its incidence among cases of lobar pneumonia ranged between 1 and 5 per cent [1][2][3]. The incidence of pneumococcal endocarditis among all cases of infective endocarditis varied between 12 and 25 per cent [4][5][6]. The incidence of pneumococcal endocarditis has declined to less than 5 per cent since penicillin became available [7][8][9], whereas the incidence of pneumococcal bacteraemia remained stable. Recent studies have shown that outcomes in pneumococcal To determine current clinical features and outcome of patients with pneumococcal endocarditis, we made a retrospective analysis of patients with this diagnosis admitted to the University Hospital Leiden from January 1976 to January 1986.
PATIENTS AND METHODSAll records of patients older than 15 years of age, admitted to University Hospital Leiden (a 900-bed hospital with both referral and primary patient populations) from 1 January, 1976, to 1 January, 1986, with pneumococcal bacteraemia were reviewed. These included five cases in which the diagnosis of pneumococcal endocarditis was made clinically. Records of patients listed in the Department of Pathology as having infective endocarditis were also reviewed, yielding one additional case in which pneumococcal endocarditis was first discovered at autopsy. For the diagnosis of pneumococcal infective endocarditis the criteria as defined by Von Reyn et al. [14] were used. Only definite, probable, or possible episodes were included in thi...