<prompt> Most common congenital anomaly associated with lithium -Cardiac malformationsNeural tube defectsRenal anomalyFetal hydantoin syndrome  <response>: Ans. is a i.e., Cardiac malformations Teratogenic effects of lithium o Lithium carries the risk of teratogenesis if ingested during pregnancy, especially during first trimester. o The most commonly repoed congenital malformations are cardiac abnormalities paicularly Ebsteins anomaly. o Other congenital malformations have also been described and include neural tube defect, Talipes, Microtia, thyroid abnormalities. 