When it was first approved by the FDA in 1970, lithium was believed to cause heart-valve defects in an extremely high percentage of infants born to mothers who were on the drug (about 1 in 50).
2
先天性心脏缺损……是婴儿在出生时心脏结构存在问题。
Congenital heart defects... are structural problems with the heart present at birth.
3
法鲁四联症，也叫婴儿青紫综合症，是最常见的严重的先天性心脏缺损，一直原来原因不明。
Tetralogy of Fallot, the most common form of a serious congenital heart defect also known as blue baby syndrome, has always been something of a puzzle.
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