Lactobacillus rhamnosus Infective Endocarditis in an Elderly Male

Lactobacilli are facultative anaerobic, gram-positive, rod-shaped bacteria found in the normal flora of the oral cavity and the gastrointestinal and genitourinary tracts. This report presents a case of Lactobacillus rhamnosus infective endocarditis and provides echocardiographic evidence of its pathogenic potential. Furthermore, we provide an account of the first successful treatment with daptomycin to our knowledge. Additionally, we examine the limited literature available on this microbiological entity and attempt to relate this data to our case.