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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Most common anomaly seen in fetus of mother taking lithium carbonate is:
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The correct answer is  Lithium effect on pregnant women: Lithium should not be used during pregnancy, especially in the first trimester, because of possible teratogenicity. It is known to cause Ebstein's anomaly, a cardiac abnormality. It is characterized by apical displacement of the tricuspid valve , often resulting in severe tricuspid regurgitation and marked RA enlargement .