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Hypoplastic Left Heart Syndrome: A Review
Diego Ramonfaur1, Xiaoya Zhang1, Abraham P Garza2
1From the Division of Postgraduate Medical Education, Harvard Medical School, Boston, MA.
Cardiology in Review
|March 29, 2022
Summary
Hypoplastic left heart syndrome (HLHS) is a severe congenital heart defect requiring complex surgical palliation. Improved surgical techniques have enhanced survival, but neurodevelopmental outcomes remain a critical concern.
Area of Science:
- Pediatric Cardiology
- Congenital Heart Disease
- Cardiac Surgery
Background:
- Hypoplastic left heart syndrome (HLHS) is a rare congenital heart defect characterized by an underdeveloped left ventricle.
- It invariably leads to early childhood mortality without intervention, necessitating complex palliative strategies.
Approach:
- Treatment involves a staged surgical correction, beginning with the Norwood procedure within weeks of birth.
- Subsequent procedures, including the bidirectional Glenn and Fontan operations, aim to manage systemic and pulmonary circulation.
- Novel therapeutic alternatives are being explored to enhance survival and neurodevelopmental outcomes.
Key Points:
- The prognosis for HLHS has improved due to advancements in surgical palliation.
- Survival is influenced by both modifiable and nonmodifiable factors.
- Neurodevelopmental outcomes are a significant focus for improving quality of life in HLHS survivors.
Conclusions:
- Staged surgical palliation offers a chance of survival for infants with HLHS.
- Continued research into novel treatments is crucial for improving long-term survival and neurodevelopment.
- Addressing neurodevelopmental comorbidities is essential for enhancing the quality of life for children with HLHS.
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