Thyroid disorders during pregnancy: impact on the fetus

Area of Science:

• Perinatology
• Endocrinology
• Fetal Medicine

Background:

• Prenatal imaging and fetal hormonology enable identification of fetal thyroid dysfunction.
• In utero treatment of fetal thyroid disorders is a developing area of medical intervention.
• Maternal drug administration offers a potential route for treating fetal thyroid issues.

Purpose of the Study:

• To review the feasibility of in utero treatment for fetal thyroid disorders.
• To explore indirect maternal treatment and direct fetal drug administration.
• To assess current approaches to managing fetal thyroid dysfunction.

Main Methods:

• Optimizing maternal treatment for Graves' disease to manage autoimmune fetal hyperthyroidism.
• Utilizing repeated intra-amniotic thyroxine injections for goitrous fetal hypothyroidism.
• Reviewing existing literature on in utero interventions for fetal thyroid conditions.

Main Results:

• Limited but positive experiences exist with in utero treatment procedures.
• Maternal treatment optimization is effective for autoimmune fetal hyperthyroidism.
• Intra-amniotic thyroxine injections show promise in reducing fetal goiter size.

Conclusions:

• Long-term consequences and efficacy of fetal thyroid interventions require further follow-up.
• Specialized prenatal care teams are crucial for managing these complex cases.
• Careful evaluation of risks, such as premature labor and infection, is necessary for direct fetal treatment.