Aortic Endocarditis on Bicuspid Valve Complicated by Valvular Perforation and Severe Aortic Regurgitation due to Methicillin-resistant Staphylococcus aureus: A Case Report
Yamoul Jihane *
Department of Cardiology, Ibn Rochd University Hospital, Casablanca, Morocco.
Kaoutar Mouammine
Department of Cardiology, Ibn Rochd University Hospital, Casablanca, Morocco.
Rachida Habbal
Department of Cardiology, Ibn Rochd University Hospital, Casablanca, Morocco.
*Author to whom correspondence should be addressed.
Abstract
Infective endocarditis (IE) on a bicuspid aortic valve (BAV) is a severe condition associated with high morbidity and mortality rates despite diagnostic and therapeutic advances. We report the case of a 25-year-old patient admitted with prolonged fever, exertional dyspnea, and marked asthenia, who was diagnosed with complicated aortic endocarditis. Echocardiography revealed a type 0 bicuspid valve with perforation of the anterior cusp, leading to severe aortic regurgitation. Serial blood cultures identified methicillin-resistant Staphylococcus aureus (MRSA). Intravenous vancomycin therapy was urgently initiated, followed by aortic valve replacement with a mechanical prosthesis. The postoperative course was favorable, with complete resolution of the infectious syndrome and proper prosthetic function. This case highlights the importance of early diagnosis and prompt medical-surgical management in the face of severe complications of IE on BAV.
Keywords: Infective endocarditis, bicuspid aortic valve, methicillin-resistant Staphylococcus aureus, aortic regurgitation, valve surgery