Introduction: Streptococcus agalactiae is an uncommon cause of acute endocarditis. It is more likely to occur in people with underlying diseases and usually evolves poorly.
Materials and methods: We have conducted a retrospective study comparing the clinical features of Streptococcus agalactiae acute endocarditis attended in our Hospital during the last twelve years with the ones caused by other microorganisms; we have analized as dependent variables the vegetation size, surgery needing, complications, time of hospitalisation and global mortality.
Results: All the cases by SGB had a great vegetation size, all needed surgery in its management with long hospitalisation periods, and the mortility was of 40%; everything was higher than other microorganism's endocarditis. CONCLUSION. Streptococcus agalactiae acute endocarditis is a serious disease which requires early surgery in its management. Its mortality rate, complications and hospitalisation time are high.