Marantic endocarditis (a.k.a. non-bacterial thrombotic endocarditis or NBTE) occurs from deposition of thrombus and fibrinous material on the heart valves, most commonly the mitral valve.

Having a prosthetic valve is not an absolute indication for surgery; however, when infection reaches a nonbiological surface, it is almost impossible to remove with pharmacologic therapy alone.

Intravenous; LV: Left ventricle; NS: Not significant; PVE: Prosthetic valve endocarditis. Adapted with permission from [32]. Aortic or mitral IE with severe acute regurgitation or valve ...

A 63-year-old man came to our emergency department with a 2-week history of progressive exercise dyspnea and diastolic murmur of volume 2/6 with the punctum maximum at Erb’s point. Six years ...