title: Endocarditis with Moraxella-like M-6 after cardiac catheterization.
abstract: A patient developed bacteremia with CDC group M-6, a Moraxella-like bacterium, after a complicated heart catheterization. He was treated with tobramycin and ampicillin. The aortic valve was later replaced and did not show any signs of infection. The slow growth of M-6 can delay diagnosis and give misleading antibiotic susceptibility results. Penicillin is not always active against this organism.
mesh_terms: D000667:Ampicillin / Q000627:therapeutic use; D006328:Cardiac Catheterization / Q000009:adverse effects*; D004697:Endocarditis, Bacterial / Q000188:drug therapy / Q000209:etiology* / Q000382:microbiology; D006801:Humans; D008297:Male; D008826:Microbial Sensitivity Tests; D008875:Middle Aged; D009016:Moraxella / Q000187:drug effects / Q000302:isolation & purification; D010406:Penicillins / Q000494:pharmacology; D018805:Sepsis / Q000188:drug therapy / Q000209:etiology* / Q000382:microbiology; D014031:Tobramycin / Q000627:therapeutic use
chemical_list: D010406:Penicillins; D000667:Ampicillin; D014031:Tobramycin