Hypoplasia of the left heart with discordant ventriculoarterial connections

Area of Science:

• Pediatric Cardiology
• Congenital Heart Disease
• Fetal Cardiology

Background:

• Discusses the rare co-occurrence of a severely hypoplastic left ventricle and discordant ventriculoarterial connections.
• Highlights associated subpulmonary obstruction of the left ventricular outflow tract.

Observation:

• A long, tortuous arterial duct arising at an acute angle from the aorta suggests early fetal development of subpulmonary obstruction.
• Observed hemodynamic deterioration following an aortopulmonary shunt due to residual flow from the hypoplastic left ventricle to the pulmonary circulation.

Findings:

• The insertion of an aortopulmonary shunt led to critical hemodynamic compromise.
• Immediate reversal of deterioration occurred upon closure of the pulmonary trunk.

Implications:

• This case provides insights into the complex hemodynamics of rare congenital heart defects.
• Suggests potential management strategies for similar complex cardiac malformations in neonates.
• Emphasizes the importance of precise surgical or interventional techniques in managing single-ventricle physiology with outflow tract obstruction.