Staphylococcus Aureus Mitral Valve Endocarditis

Description

• ASB 20 yrs old woman
• Weight loss and shortness of breath for the last 6 weeks
• Pyrexial (39.6)
• Past medical history: Nil
• Social history: Smoker, Cocaine user

Clinical case information

Echocardiography

Conventional PLAX view. This view shows no apparent mitral valve disease

Parasternal long axis view with mild rotation of the transducer. A mass in mitral valve is clearly seen

Parasternal long axis view with mild rotation of the transducer. Zoom on mitral valve to show the abnormal mass. In this clinical context the mass is compatible to endocarditic vegetation

Parasternal long axis view with colour Doppler. Swirling pattern in left atrium suggestive of mitral regurgitation

Apical 4 chambers view. Notice the mass in the posterior mitral valve leaflet

Colour Doppler on apical 4 chambers view showing mitral valve regurgitation

Apical 3 chambers view. Notice the mass in the posterior mitral valve leaflet

Colour Doppler on apical 4 chambers view showing mitral valve regurgitation

Colour Doppler on apical 4 chambers view showing mitral valve regurgitation

Severe mitral regurgitation – assessment with continuous wave Doppler

Conclusion

Diagnosis and management

• Blood cultures: staphylococcus aureus
• Diagnosis: Mitral infective endocarditis. Severe mitral regurgitation
• On antibiotics for endocarditis
• After 6 weeks, no progress > patient underwent successful mitral valve replacement with a mechanical prosthesis