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Current issues and perspectives in hypoplasia of the left heart
David Sedmera1, Andrew C Cook, Girish Shirali
1Department of Cell Biology and Anatomy, Medical University of South Carolina, Charleston, South Carolina 29425, USA. sedmerad@musc.edu
Insights
Hypoplastic left heart syndrome is a severe congenital heart defect where the left heart is underdeveloped. This review covers its causes, diagnosis, and treatment options, including surgery and transplantation.
Area of Science:
- Cardiology
- Developmental Biology
- Genetics
Background:
- Hypoplastic left heart syndrome (HLHS) is a rare congenital cardiac disease.
- It involves underdevelopment of left heart structures, leading to a non-functional left ventricle.
- The exact etiology is unknown but has a genetic component.
Purpose of the Study:
- To review the morphology of hypoplastic left heart syndrome.
- To explore potential pathogenetic mechanisms.
- To discuss current clinical management and future prenatal intervention strategies.
Main Methods:
- Literature review of morphology and pathogenesis.
- Analysis of clinical management options.
- Examination of animal model research for prenatal intervention insights.
Main Results:
- Prenatal diagnosis identifies approximately 50% of cases.
- Treatment options include comfort care, staged palliative surgery, or cardiac transplantation.
- Animal models offer insights into potential prenatal interventions.
Conclusions:
- HLHS requires comprehensive understanding of its complex etiology and pathology.
- Multidisciplinary management is crucial for affected infants.
- Further research, particularly in prenatal interventions, holds promise for improving outcomes.
Abstract:
Hypoplastic left heart syndrome is a rare but serious form of congenital cardiac disease, characterized by underdevelopment of the components of the left heart, rendering the left ventricle non-functional. Its aetiology is largely unknown, but there is certainly a genetic component. Prenatal diagnosis nowadays uncovers about half of cases. Postnatal options for treatment include comfort care, 3-stage palliative surgery, or cardiac transplantation. In this review, we discuss the morphology, possible pathogenetic mechanisms, clinical management, and perspectives of prenatal intervention based on work in animal models.
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