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Published on: May 5, 2018
Fetal cardiac screening: why bother?
1Fetal Cardiology Unit, 1st Floor, Evelina Children's Hospital, St Thomas' Hospital, Westminster Bridge Road, London SE1 7EH, UK. gurleen.sharland@gstt.nhs.uk
Insights
Antenatal screening for congenital heart disease (CHD) can improve outcomes, but detection rates vary widely. Standardized training is needed to improve prenatal diagnosis of CHD in all pregnancies.
Area of Science:
- Cardiology
- Prenatal Diagnosis
- Medical Imaging
Background:
- Congenital heart disease (CHD) is a leading cause of infant mortality and morbidity.
- Antenatal diagnosis of critical CHD aids in improving survival rates and allows for parental preparation.
- While accurate in tertiary centers, most CHD cases occur in low-risk pregnancies and are detected via obstetric ultrasound.
Purpose of the Study:
- To evaluate the effectiveness of antenatal screening for congenital heart disease.
- To highlight the disparities in prenatal detection rates of CHD.
- To emphasize the need for standardized training in fetal cardiac examination.
Main Methods:
- Review of current national guidelines for antenatal screening of CHD.
- Analysis of prenatal detection rates across different regions.
- Discussion of the implications of widespread training and resource allocation.
Main Results:
- Antenatal diagnosis of CHD can be highly accurate in specialized centers.
- Significant regional variations exist in the prenatal detection rates of CHD.
- Current guidelines recommend cardiac examination during obstetric anomaly scans.
Conclusions:
- Improving prenatal detection of CHD requires addressing regional disparities.
- Widespread teaching and training are essential for achieving uniform diagnostic standards.
- Implementing standardized training for antenatal CHD screening has resource implications.
Abstract:
Congenital heart disease (CHD) is a common form of congenital malformation associated with significant morbidity and mortality. Antenatal diagnosis of life-threatening forms of CHD may help to improve survival and morbidity as well as allowing parental choice and preparation. The diagnosis of CHD during fetal life can be made with a very high level of diagnostic accuracy in tertiary centres dealing with high-risk pregnancies. However, most cases of CHD will occur in low-risk groups and will only be detected by screening at the time of obstetric ultrasound scans. The concept of antenatal screening for CHD was introduced in the UK over 20 years ago, and current national guidelines recommend that the heart should be examined at the time of the obstetric anomaly scan. However, there remains a large regional variation in prenatal detection rates of CHD. Widespread teaching and training is required to achieve a more uniform standard but this will be associated with significant resource implications.
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