[Thyroid diseases in pregnancy]

Knowledge about the physiology of the fetal and maternal regulating circle of the thyroid gland is the prerequisite for the right valuation of thyroidal parameters and for a risk-poor treatment of diseases of the thyroid gland during pregnancy. The conditions of the passage at the fetoplacental unit require particular attention in the use of thyroid depressants. Hyperthyreoses as well as bland strumae may be increased in their distinction by a pregnancy. Maternal hyperthyroidism has often a mild course. While thyreostatic drugs must be applied in their least effective dosage, for the substitution with thyroid hormones there is a higher demand than in non-pregnant women. Fetus and newborn as well as the mother need a narrow-mashed control which should be performed interdisciplinarily in a special consulting.