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Fatal hypertrophic cardiomyopathy in an infant of a diabetic mother

J N McMahon1, P J Berry, H S Joffe

  • 1Department of Pathology, Royal Hospital for Sick Children, St Michael's Hill, Bristol, UK.

Pediatric Cardiology
|October 1, 1990
PubMed

Insights

Maternal diabetes can cause hypertrophic cardiomyopathy (HCM) in infants, leading to an unexpected fatal outcome. This case highlights a rare, severe presentation of diabetes-related HCM with distinct pathological findings.

Area of Science:

  • Pediatrics
  • Cardiology
  • Neonatology

Background:

  • Hypertrophic cardiomyopathy (HCM) is a cardiac condition often associated with genetic factors.
  • Infantile HCM typically presents with a good prognosis, especially when linked to maternal diabetes.
  • Maternal diabetes mellitus is a known risk factor for congenital heart anomalies.

Observation:

  • A male infant diagnosed with hypertrophic cardiomyopathy (HCM) attributed to maternal diabetes is presented.
  • The infant experienced an unusually poor prognosis, succumbing at 11 weeks of age.
  • Clinical and echocardiographic features were consistent with typical familial HCM.

Findings:

  • Pathological examination revealed findings indistinguishable from familial HCM.
  • A key difference noted was a lesser degree of myocardial fiber disarray on microscopic analysis.
  • This suggests a potentially distinct pathological mechanism in HCM secondary to maternal diabetes.

Implications:

  • This case underscores the potential for severe, fatal outcomes in infants with HCM due to maternal diabetes.
  • It highlights the need for careful monitoring and management of infants born to diabetic mothers.
  • Further research into the specific pathophysiology of diabetes-related HCM is warranted to understand prognostic variations.

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