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Aortic and mitral regurgitation in an infant with Kawasaki disease
Insights
A rare fatal case of Kawasaki disease in an infant led to severe cardiac issues, including aortic regurgitation. This case highlights the critical need to consider Kawasaki disease as a potential cause of aortic regurgitation in infants.
Area of Science:
- Pediatric Cardiology
- Infectious Diseases
Background:
- Kawasaki disease is a leading cause of acquired heart disease in children.
- Cardiac complications, while common, rarely manifest as severe aortic regurgitation.
Observation:
- An 11-week-old boy presented with multisystem failure and fatal Kawasaki disease.
- Echocardiography and cardiac catheterization revealed significant cardiac abnormalities, including left ventricular and atrial enlargement, aortic root dilatation, and left main coronary artery dilatation.
- Specific findings included aortic and mitral regurgitation and coronary artery dilatation.
Findings:
- The case describes extensive cardiac involvement in Kawasaki disease, a rare presentation.
- Aortic regurgitation, a very uncommon complication, was identified as a key feature.
- The patient experienced multisystem failure, culminating in death on day 31.
Implications:
- This case underscores the importance of recognizing Kawasaki disease as a potential cause of aortic regurgitation in infants.
- The pathogenesis of aortic regurgitation in Kawasaki disease, possibly linked to aortitis or valvulitis, requires further investigation.
- Early diagnosis and management are crucial to prevent severe cardiac sequelae.
Abstract:
A fatal case of Kawasaki disease with extensive cardiac involvement in an 11-week-old boy is described. Two-dimensional echocardiography revealed enlargement of the left ventricle, left atrium, and aortic root as well as dilatation of the left main coronary artery. Cardiac catheterization revealed both aortic and mitral regurgitation and fusiform dilatation of the proximal segments of the coronary arteries. The clinical course was characterized by multisystem failure and death on day 31 of the illness. Aortic regurgitation is a very rare complication of Kawasaki disease and has been previously reported in one Japanese infant. The pathogenesis of aortic regurgitation in this disease is not known but may be due to aortitis and/or valvulitis. Kawasaki disease should be included as a cause of aortic regurgitation in infants.