A32.82

Clinical Causes: Infection with Listeria monocytogenes bacteria, typically acquired through contaminated food or water Invasion of the bloodstream allowing bacteria to reach the heart Invasion into the heart's inner lining (endocardium) leading to formation of vegetations or infected clots Predisposing factors such as immunosuppression, pregnancy, recent surgery, or pre-existing heart disease

Key Symptoms: Fever and chills Night sweats Fatigue or weakness Shortness of breath Chest pain or discomfort Rapid heartbeat Swelling in the extremities Other signs of systemic infection such as nausea or muscle aches

Diagnosis Path: Diagnosing listerial endocarditis involves a combination of clinical evaluation and laboratory investigations. Blood cultures are central to identifying Listeria monocytogenes in the bloodstream. Echocardiography, especially transesophageal echocardiography, helps visualize vegetations or structural heart changes. Additional tests may include complete blood count, inflammatory markers, and other imaging studies to assess the extent of infection and rule out related complications.

Treatment Protocols: Treatment typically requires hospitalization and administration of targeted antibiotic therapy. The antibiotics used often include ampicillin or penicillin, sometimes combined with gentamicin for synergy. The duration of treatment can be several weeks, depending on the severity and response to therapy. In some cases, surgical intervention may be necessary to repair or replace affected heart valves. Supportive care, including management of heart failure symptoms and prevention of complications, is also essential.