Subclinical thyroid disease and the incidence of hypertension in pregnancy

Karen L. Wilson, Brian M. Casey, Donald D. McIntire, Lisa M. Halvorson, F. Gary Cunningham

Research output: Contribution to journalArticlepeer-review

133 Scopus citations


To estimate the possibility of long-term effects of subclinical thyroid dysfunction on hypertension and other cardiovascular-related conditions during pregnancy. This is a secondary analysis of a prospective prenatal population-based study in which serum thyroid-function analytes were measured from November 2000 through April 2003. Women with evidence of overt thyroid disease were excluded. The remaining women were classified as being euthyroid, having subclinical hyperthyroid, or having subclinical hypothyroid, and the frequency of pregnancy-associated hypertensive disorders was compared between these groups. Pregnancy outcomes in 24,883 women were analyzed for pregnancy hypertension, classified as gestational hypertension, mild preeclampsia, or severe preeclampsia. The incidence of hypertensive disorders were compared between the three cohorts. The overall incidences of hypertension in pregnancy were 6.2%, 8.5%, and 10.9% in the subclinical hyperthyroid, euthyroid, and subclinical hypothyroid groups, respectively, and were found to be significant when unadjusted (P=.016). After adjusting for confounding factors, there was a significant association between subclinical hypothyroidism and severe preeclampsia (adjusted odds ratio 1.6, 95% confidence interval 1.1-2.4; P=.03). Women with subclinical hypothyroidism identified during pregnancy have an increased risk for severe preeclampsia when compared with euthyroid women. II.

Original languageEnglish (US)
Pages (from-to)315-320
Number of pages6
JournalObstetrics and gynecology
Issue number2
StatePublished - Feb 2012

ASJC Scopus subject areas

  • Obstetrics and Gynecology


Dive into the research topics of 'Subclinical thyroid disease and the incidence of hypertension in pregnancy'. Together they form a unique fingerprint.

Cite this