Management strategy for congenital hyperinsulinism with atrial septal defect and diazoxide-induced pulmonary

Sayuri Koizumi1, Ikuma Musha1,2, Koichi Toda3

  • 1Department of Pediatrics, Saitama Medical University Hospital, Saitama, Japan.

Insights

Congenital hyperinsulinism (CHI) treatment with diazoxide can cause pulmonary hypertension (PH). This case study shows surgically closing an atrial septal defect enabled safe diazoxide reintroduction, achieving good glycemic control and managing PH.

Area of Science:

  • Pediatric Endocrinology
  • Cardiology
  • Medical Case Reports

Background:

  • Congenital hyperinsulinism (CHI) is a condition of excessive insulin secretion causing hypoglycemia.
  • Diazoxide is the primary medical treatment for CHI but can induce pulmonary hypertension (PH).

Observation:

  • A 2-month-old infant with CHI and an atrial septal defect (ASD) developed dose-dependent PH while on diazoxide.
  • Alternative medical management proved insufficient for stable glycemic control.
  • Surgical closure of the ASD was performed to facilitate safer diazoxide use.

Findings:

  • The combined approach of surgical ASD closure, diazoxide therapy, and anti-PH medication successfully managed PH.
  • This strategy also achieved stable blood glucose levels in the patient.

Implications:

  • This case demonstrates a novel strategy for managing CHI patients with co-existing cardiac conditions.
  • Surgical intervention for cardiac defects may allow for the safe reintroduction of essential medications like diazoxide.
  • This approach offers a potential alternative to more invasive treatments like pancreatic resection.

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