Streptococcus agalactiae infective endocarditis complicated by large vegetations at aortic valve cusps along with...

Area of Science:

• Cardiology
• Infectious Diseases
• Pathology

Background:

• Streptococcus agalactiae infective endocarditis (IE) is uncommon but associated with high mortality.
• Complications include large vegetations and systemic emboli, posing significant clinical challenges.

Observation:

• A 49-year-old male with hepatic cirrhosis and type 2 diabetes presented with fever and was found deceased.
• Autopsy revealed purulent pericardial effusion positive for S. agalactiae, aortic valve vegetations, and mitral valve rupture.
• Vegetations extended into the right coronary artery, causing occlusion, and systemic bacterial dissemination was noted.

Findings:

• The primary cause of death was acute myocardial ischemia.
• This ischemia resulted from intracoronary extension of S. agalactiae vegetation occluding the right coronary artery.
• Ruptured posterior papillary muscle and systemic bacterial masses were also observed.

Implications:

• This case highlights the severe and potentially fatal consequences of S. agalactiae IE, even in patients with pre-existing conditions.
• Prompt diagnosis and management of S. agalactiae IE are crucial to prevent catastrophic complications like coronary artery occlusion.
• Further research into risk factors and optimal treatment strategies for S. agalactiae IE is warranted.