Amiodarone during pregnancy.

A case study is presented in which amiodarone (A) was given during the whole of pregnancy and during the breast feeding period. An intensive observation of thyroid tests, serum concentrations of A and its metabolite, desethylamiodarone (DEA) was undertaken. The child was observed in the same way from birth until 2 months of age. The milk was analyzed for A and DEA. As reported in other published cases, transplacental passage was found and there was a relatively high concentration of amiodarone in the milk. Our child like the other children was healthy at birth, being euthyroid and with no goiter or corneal deposits. No effect was observed of the medication on growth, thyroid tests or cornea. It is concluded that amiodarone can be given during pregnancy but it is advisable to use as low doses as possible and control the serum concentrations at regular intervals. Breast feeding need not be forbidden.