Should all women be screened for thyroid dysfunction in pregnancy?

Area of Science:

• Endocrinology
• Obstetrics
• Public Health

Background:

• Thyroid dysfunction during pregnancy poses risks to both mother and fetus.
• Current diagnostic strategies often fail to detect a significant number of affected women.
• Subclinical thyroid dysfunction constitutes the majority of gestational thyroid disorders.

Purpose of the Study:

• To critically review the literature on universal thyroid screening in pregnancy.
• To examine the advantages and disadvantages of universal screening versus case-finding.
• To assess the evidence supporting the treatment of subclinical thyroid dysfunction in pregnancy.

Main Methods:

• Literature appraisal of existing studies on thyroid screening in pregnancy.
• Analysis of the benefits and drawbacks of universal screening protocols.
• Evaluation of the clinical implications of treating asymptomatic thyroid dysfunction.

Main Results:

• Universal screening identifies more cases of thyroid dysfunction than current selective approaches.
• A substantial proportion of thyroid disorders in pregnancy are subclinical.
• High-level evidence supporting intervention for asymptomatic cases is currently limited.

Conclusions:

• There is a growing case for implementing universal thyroid screening in pregnancy.
• Further research is needed to clarify the benefits of treating subclinical thyroid dysfunction.
• Strategies for effective implementation of universal screening should be explored.