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Thyroid insufficiency during pregnancy: complications and implications for screening.

Roberto Negro1

  • 1a Ospedale 'V. Fazzi', Piazza F. Muratore 73100, Lecce, Italy. robnegro@tiscali.it.

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Summary

Universal screening for thyroid dysfunction during pregnancy is not recommended unless specific risk factors are present. Early detection and management are crucial for maternal and fetal health, especially concerning thyroid insufficiency.

Keywords:
autoimmunityhypothyroidismhypothyroxinemiaiodinepregnancythyroid

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Area of Science:

  • Endocrinology
  • Reproductive Medicine
  • Public Health

Background:

  • Clinical practice guidelines for thyroid dysfunction in pregnancy were established in 2007.
  • Expert panels from major international thyroid associations contributed to these guidelines.
  • Pregnancy significantly alters the pituitary-thyroid axis, necessitating careful management of thyroid health.

Purpose of the Study:

  • To review modifications of the pituitary-thyroid axis during pregnancy.
  • To identify key risk factors for maternal thyroid dysfunction.
  • To discuss the implications of maternal thyroid impairment on progeny and the debate around universal screening.

Main Methods:

  • Review of existing clinical practice guidelines and relevant literature.
  • Analysis of risk factors for thyroid dysfunction in pregnant women.
  • Examination of potential complications for offspring due to maternal thyroid issues.

Main Results:

  • Universal screening for thyroid dysfunction in pregnancy is not universally recommended.
  • Thyroid function tests are advised for women with specific risk factors, including history of irradiation, preterm delivery, infertility, or known thyroid disease.
  • Maternal thyroid impairment can lead to adverse outcomes for the progeny.

Conclusions:

  • Current guidelines suggest selective screening for thyroid dysfunction during pregnancy based on risk factors.
  • Further discussion is warranted regarding the benefits and drawbacks of universal thyroid screening in early pregnancy.
  • Management of thyroid health during pregnancy is critical for both maternal well-being and fetal development.