[Polymicrobial endocarditis: presentation of 3 cases].

We present three cases of polymicrobian endocarditis (PE), two of them in parenterally drug addicts (PDA) and the other one in a central catheter carrier. In all these three cases, the form of clinical presentation was similar to the monomicrobian endocarditis and the valve affected was the tricuspid one, as it occurs in most of the described PE. PE must be suspect in PDA or central catheter carriers if a rare germ is isolated (commensal of skin, oropharynx or gastrointestinal tract) or if there is a poor response to the antibiotic treatment, as it is the case in the patients described here.