MRSA-associated bacterial myocarditis causing ruptured ventricle and tamponade

Area of Science:

• Cardiology
• Infectious Diseases
• Pathology

Background:

• Bacterial myocarditis is a rare cardiac condition, often diagnosed post-mortem.
• It can mimic viral myocarditis or acute myocardial infarction, complicating diagnosis.
• Limited data exists on its diagnosis and treatment due to historical diagnostic limitations.

Observation:

• An 81-year-old male presented with elevated troponins and sepsis, indicative of bacterial myocarditis.
• The causative agent identified was methicillin-resistant Staphylococcus aureus (MRSA).
• The patient experienced myocardial necrosis and succumbed to ventricular rupture.

Findings:

• This case represents the first reported instance of ventricular rupture due to MRSA-associated bacterial myocarditis.
• The presentation mimicked acute myocardial infarction, posing diagnostic challenges.
• The patient's condition rapidly progressed to a fatal outcome.

Implications:

• Highlights the potential for severe cardiac complications from bacterial infections, even without endocarditis.
• Underscores the need for improved diagnostic strategies and treatment protocols for bacterial myocarditis.
• Emphasizes the critical role of identifying causative organisms like MRSA in cardiac emergencies.