Actinobacillus actinomycetemcomitans endocarditis in a 1.5 year old toddler

Area of Science:

• Pediatric Cardiology
• Infectious Diseases
• Microbiology

Background:

• Infective endocarditis is uncommon in infants, particularly involving the pulmonic valve.
• Actinobacillus actinomycetemcomitans (AA) is a rare pathogen in pediatric endocarditis.
• Congenital heart abnormalities can predispose infants to endocarditis.

Observation:

• A 1.5-year-old girl with a congenital cardiac defect presented with endocarditis.
• The pulmonic valve was affected by Actinobacillus actinomycetemcomitans (AA) vegetation.
• The patient had no history of dental procedures preceding the infection.

Findings:

• This case represents the youngest infant reported with AA endocarditis.
• The pulmonic valve was the site of vegetation in this pediatric patient.
• The infant experienced a complete recovery without complications.

Implications:

• This case expands the understanding of AA endocarditis in young children.
• Pulmonic valve endocarditis in infants, though rare, can have a benign course.
• Highlights the importance of considering unusual pathogens in pediatric endocarditis, even without typical risk factors.