The approach not to screen thyroid function of all pregnant women is mainly based on conflicting evidence of whether treatment of women with mild hypothyroidism is beneficial. However, there is consensus that all women with overt hypothyroidism (OH) and those with a thyrotropin (TSH) >10 mIU/L should be treated immediately, but data on these conditions are scarce. We assessed the prevalence of OH and a TSH >10 mIU/L during the first trimester of pregnancy. Methods: Thyroid function was assessed at 10-12 weeks gestation in 4199 Dutch Caucasian healthy pregnant women from three studies conducted in 2002, 2005, and 2013 from the same iodine sufficient area in the southeast of The Netherlands. We defined the first trimester specific cutoffs (2.5th-97.5th percentile) for TSH and free thyroxine (fT4) in thyroid peroxidase antibody (TPO-Ab) negative women in each study to determine the prevalence of women with OH and those with a TSH >10 mIU/L. We extrapolated these figures to the pregnant population of 2012 in The Netherlands, the United Kingdom, and the United States.
|Comment-As highlighted, time for a change. While we can still research the effects of treatment for SCH, the obvious and known benefits of universal screening (at least by TSH assay) merit institution now.|
The Attitude Toward Hypothyroidism During Early Gestation: Time for a Change of Mind?
Thank you for using and supporting THYROID MANAGER
One click download of a complete current PDF version of this chapter is available by payment of $5.00 (including sales tax) to ENDOCRINE EDUCATION / MDTEXT.COM,INC.
You will be directed to a Paypal site for entering payment information, and then returned immediately to this site for delivery of the PDF download. If you do not wish to secure the PDF version, you are of course free to download the material directly from the chapter on our Website without charge.
We welcome comments on this service, and this charge, to- firstname.lastname@example.org. May we note that we must secure income from advertisements and chapter downloads in order to continue providing our (otherwise) totally free, comprehensive, authoritative, constantly up-dated, Endocrinology web-book to the thousands of physicians and trainees around the world who visit the website each day of the year. We also welcome contributions.