Prenatal screening for congenital heart disease

Area of Science:

• Obstetrics and Gynecology
• Pediatric Cardiology
• Fetal Medicine

Background:

• Routine fetal ultrasound is standard in British obstetric units.
• A specific method for systematic fetal heart examination was developed.
• The four-chamber view is a key section for assessing fetal cardiac anatomy.

Purpose of the Study:

• To evaluate the utility of the four-chamber view in routine obstetric screening.
• To assess the prevalence of severe cardiac abnormalities detectable via this view.
• To explore the impact of targeted training on the detection rates of fetal heart defects.

Main Methods:

• Development of a simple, systematic method to examine the fetal four-chamber view.
• Analysis of data from a referral center for fetal echocardiography over six years.
• Tracking the proportion of cardiac anomaly referrals based on obstetrician suspicion from the four-chamber view.

Main Results:

• Severe cardiac abnormalities are found in approximately 2 in 1000 pregnancies.
• The four-chamber view can be easily integrated into routine obstetric screening.
• Currently, 80% of detected cardiac anomalies are referred due to suspicion from the four-chamber view examination.

Conclusions:

• The four-chamber view is a valuable tool for routine fetal screening.
• Enhanced teaching and organization of training can improve prenatal detection of severe cardiac malformations.
• Widespread adoption of this method could significantly increase early prenatal diagnosis rates for fetal heart conditions.