You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Most common anomaly seen in fetus of mother taking lithium carbonate is: and explain in detail?
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 .