Extensive left ventricular to coronary artery connections in hypoplastic left heart syndrome
David A Roberson1, Wei Cui, Bettina F Cuneo
1The Heart Institute for Children, Hope Children's Hospital, Oak Lawn, Illinois 60453, USA. david@thic.com
Insights
This study details a rare fetal case of extensive left ventricular to coronary arterial connections in hypoplastic left heart syndrome. Echocardiography revealed unique coronary artery abnormalities and connections, offering new insights.
Area of Science:
- Cardiology
- Fetal Medicine
- Medical Imaging
Background:
- Hypoplastic left heart syndrome (HLH) is a complex congenital heart defect.
- Left ventricular to coronary arterial connections (VCC) are rare anomalies.
- Understanding VCC in HLH is crucial for diagnosis and management.
Observation:
- Echocardiographic demonstration of extensive bilateral VCC in a fetus with HLH.
- Detailed visualization of VCC supplying both right and left coronary arteries.
- Identification of hypoplastic left main coronary artery and dilated LAD with VCC.
Findings:
- The right coronary artery, via VCC, provided the sole antegrade flow to the ascending aorta.
- The left anterior descending artery showed dilation and tortuosity with multiple VCC.
- The left circumflex artery originated exclusively from its own VCC.
Implications:
- This case represents the first echocardiographic documentation of HLH with extensive bilateral VCC and coronary anomalies.
- Provides critical imaging insights into complex coronary artery development in HLH.
- Enhances understanding of VCC pathophysiology and potential therapeutic targets in congenital heart disease.
Abstract:
We demonstrate the echocardiographic features of a rare case of very extensive left ventricular to coronary arterial connections (VCC) to both the right and left coronary arteries in a fetus and subsequent neonate with hypoplastic left heart syndrome (HLH). The right coronary artery, after receiving multiple VCC supplied the only antegrade ascending aortic flow. The left main coronary artery was very hypoplastic and the left anterior descending coronary artery was dilated and tortuous with multiple large VCC. The left circumflex coronary artery arose exclusively from its own VCC. To our knowledge this is the first such echocardiographic demonstration of HLH with extensive bilateral VCC and coronary artery stenosis and interruption.
Related Concept Videos
Coronary Circulation
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
Chambers of the Heart
Deoxygenated blood from the body is received in the right...
Cardiac Catheterization III: Left Heart Catheterization
Mitral Stenosis I: Introduction
Cardiomyopathy III: Hypertrophic Cardiomyopathy
Physiology of the Heart: The Cardiac Cycle
Diastole: The Relaxation Phase
During diastole, all four heart chambers relax. The atrioventricular (AV) valves open, and the semilunar valves close. This phase sees the lowest chamber pressures, promoting ventricular filling. Venous blood enters the heart through the...


