Aortic morphometry and microcephaly in hypoplastic left heart syndrome.

Area of Science:

• Pediatric Cardiology
• Neonatal Neurology
• Fetal Development

Background:

• Microcephaly indicates abnormal fetal brain development and is linked to cognitive issues.
• Infants with hypoplastic left heart syndrome (HLHS) show higher rates of neurodevelopmental problems.
• Reduced cerebral blood flow in HLHS may affect fetal brain growth.

Purpose of the Study:

• Determine microcephaly prevalence in full-term infants with HLHS.
• Investigate cardiac risk factors associated with microcephaly in these infants.

Main Methods:

• Retrospective review of full-term neonates diagnosed with HLHS.
• Collected data on birth weight, length, head circumference, and aortic dimensions via echocardiography.
• Logistic regression analysis was used to analyze the data.

Main Results:

• 12% (15 of 129) of neonates with HLHS had microcephaly.
• Microcephaly was disproportionately smaller than weight and length (p<0.001).
• Smaller ascending aorta diameter (p=0.034) correlated with microcephaly, but not transverse aortic arch size (p=0.619).

Conclusions:

• Microcephaly is prevalent in neonates with HLHS.
• A small ascending aorta is associated with microcephaly in HLHS.
• Impaired somatic growth may contribute to microcephaly development in this population.