This is believed to be the 58th reported case of Listeria monocytogene
s infective endocarditis. Published reports worldwide were reviewed as
to treatment, outcome, and prognostic features. There is controversy
over whether all patients with this condition should have surgery. Mor
eover the best antibiotic treatment is not known, which accounts for t
he heterogeneity of regimens used. Listeria endocarditis has a high mo
rtality rate (37%). This was higher in men (41% v 32%) and in patients
with valve prostheses (41% v 31%), though neither observation reached
statistical significance. There was no significant difference in mort
ality between surgical and non-surgical treatment, but untreated liste
ria endocarditis proved universally fatal. From the data, treatment wi
th ampicillin is recommended, with resort to surgery in cases where th
e infection cannot be eradicated or where haemodynamic compromise has
occurred.