Beyond rheumatic: therapeutic implications in mitral regurgitation

Area of Science:

• Cardiology
• Rheumatology
• Pediatrics

Background:

• Rheumatic heart disease (RHD) is a common cause of mitral regurgitation (MR), often overshadowing other etiologies.
• Non-rheumatic causes of MR require distinct management strategies.
• Childhood-onset systemic lupus erythematosus (SLE) can present with valvular involvement mimicking RHD.

Purpose of the Study:

• To present a case of a child with non-rheumatic mitral regurgitation due to early-onset SLE.
• To emphasize the importance of considering SLE in cases of unexplained systemic inflammation and cardiac dysfunction.
• To highlight the diagnostic challenges and management implications of coexisting RHD and SLE.

Main Methods:

• Case report of an 8-year-old girl from Uganda.
• Clinical evaluation, diagnostic workup, and management of mitral regurgitation and systemic inflammation.
• Review of literature on valvular manifestations of SLE and RHD.

Main Results:

• The patient was initially diagnosed with rheumatic MR but presented with persistent systemic inflammation and renal dysfunction.
• Further investigations revealed features consistent with early-onset SLE.
• Valvular findings in SLE can closely resemble those seen in RHD.

Conclusions:

• A high index of clinical suspicion is essential for diagnosing childhood-onset SLE, especially when cardiac and systemic inflammatory findings are atypical for RHD.
• The coexistence of RHD and SLE is rare and necessitates a tailored management approach.
• This case underscores the need to consider diverse etiologies for MR in children, particularly in resource-limited settings.