Table 1

 Frequency of reasons for referral to echocardiography and diagnosis at discharge

FUO, fever of unknown origin; IE, infective endocarditis.
Reason for referral
    FUO without evident extracardiac infection50
    FUO with blood cultures positive for germs typical for IE18
    FUO in recent cardiac surgery14
    FUO with predisposing heart disease26
    FUO in injecting drug users10
    Recurrent embolic phenomena12
    FUO with immunological phenomena5
Diagnosis at discharge
    Connective tissue disease8
    Splenic abscess8
    Viral illness11
    Cerebral abscess8
    Line sepsis4
    Bacteraemia of unknown origin14
Total IE35