Maternal lithium and neonatal Ebstein's anomaly: evaluation with cross-sectional echocardiography

Area of Science:

• Cardiology
• Neonatal Medicine
• Pharmacology

Background:

• Maternal lithium ingestion during pregnancy raises concerns for potential fetal cardiac malformations.
• Ebstein's anomaly is a known cardiac defect associated with prenatal drug exposure.
• Early identification of cardiac issues in neonates is crucial for timely intervention.

Observation:

• Two neonates born to mothers with in-utero lithium exposure were evaluated using cross-sectional echocardiography.
• One infant was diagnosed with Ebstein's anomaly of the tricuspid valve.
• The second infant's echocardiogram ruled out Ebstein's anomaly, providing reassurance.

Findings:

• Cross-sectional echocardiography is a highly accurate noninvasive method for assessing neonatal cardiac structures.
• This imaging technique can reliably detect or exclude lithium-induced cardiac malformations.
• The study demonstrates the utility of echocardiography in managing pregnancies exposed to lithium.

Implications:

• Routine echocardiographic screening of neonates exposed to lithium in utero is recommended.
• Early diagnosis of cardiac defects allows for prompt management and improved neonatal outcomes.
• This approach enhances the safety profile of lithium use during pregnancy by enabling proactive fetal cardiac assessment.