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Published on: December 16, 2022
Left outflow tract anomalies in children
1College of Medicine, University of South Florida, Tampa, Florida, USA. mloscalz@health.usf.edu
Insights
Genetic factors influence left outflow tract heart defects, including aortic stenosis, in children. Early diagnosis and family screening are crucial for managing these inherited conditions.
Area of Science:
- Pediatric Cardiology
- Medical Genetics
- Congenital Heart Disease
Background:
- Left outflow tract abnormalities are diverse congenital heart defects.
- Aortic stenosis is a significant manifestation within this spectrum.
- Understanding the genetic basis is critical for diagnosis and management.
Purpose of the Study:
- To review current knowledge on the genetics of pediatric left outflow tract disorders.
- To discuss diagnostic approaches for syndromic and nonsyndromic forms.
- To outline implications for family screening and prenatal testing.
Main Methods:
- Literature review of genetic studies on left outflow tract anomalies.
- Analysis of diagnostic modalities for affected children.
- Discussion of inheritance patterns and genetic counseling.
Main Results:
- Left outflow tract anomalies exhibit variable inheritance, including autosomal dominant patterns in nonsyndromic cases.
- Early identification of affected individuals, even if asymptomatic, is challenging but vital.
- Family evaluation is essential due to potential genetic transmission.
Conclusions:
- Enhanced understanding of left outflow tract disorder genetics aids in identifying affected children.
- Improved genetic insights facilitate better cardiac follow-up for at-risk individuals and families.
Purpose Of Review:
To provide a discussion of the current knowledge of the genetics of left outflow tract of the heart, including the aortic stenosis, in children. It addresses the available means of diagnosis for syndromic and nonsyndromic left outflow tract abnormalities and implications for at-risk family members. Options for prenatal testing and recommendations for cardiac follow-up are presented.
Recent Findings:
Left outflow tract cardiac anomalies in children present as a varied spectrum among and within families. Even nonsyndromic forms can be inherited in an autosomal dominant pattern. These can lead to significant complications in asymptomatic individuals, making diagnosis a challenge and underscoring the importance of evaluation of at-risk family members.
Summary:
Improved understanding of the genetics of both syndromic and nonsyndromic left outflow tract disorders is hoped to lead to improved identification of affected children and greater ongoing cardiac follow-up for those potentially at risk.
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