Thyroid stimulating hormone (TSH) ≥2.5mU/l in early pregnancy: Prevalence and subsequent outcomes.
Eur J Obstet Gynecol Reprod Biol
; 210: 366-369, 2017 Mar.
Article
em En
| MEDLINE
| ID: mdl-28153744
ABSTRACT
OBJECTIVE:
There remains controversy over how women with abnormal thyroid function tests in pregnancy should be classified. In this study we assessed the proportion of women with thyroid stimulating hormone (TSH)≥2.5mU/l in a large obstetric cohort, and examined how many have gone on to develop thyroid disease in the years since their pregnancy. STUDYDESIGN:
4643 women were recruited and samples taken in early pregnancy between 2007 and 2010. Thyroid function tests were analysed in 2014; in women with raised TSH computerised health records and prescription databases were used to identify thyroid disease detected since pregnancy.RESULTS:
58 women (1.5%) had a TSH over 5mU/l and 396 women (10.3%) had TSH between 2.5 and 5mU/l. Women with TSH>5mU/l delivered infants of lower birthweight than those with TSH<2.5mU/l; there were no other differences in obstetric outcomes between the groups. Of those who have had thyroid tests since their pregnancy, 78% of those with TSH>5mU/l and 19% of those with TSH between 2.5 and 5mU/l have gone on to be diagnosed with thyroid disease.CONCLUSIONS:
Using a TSH cut-off of 2.5mU/l in keeping with European and US guidelines means that over 12% of women in this cohort would be classified as having subclinical hypothyroidism. Treatment and monitoring of these women would have major implications for planning of obstetric services.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Complicações na Gravidez
/
Hipotireoidismo
Tipo de estudo:
Guideline
/
Prevalence_studies
/
Risk_factors_studies
Limite:
Adult
/
Female
/
Humans
/
Pregnancy
País/Região como assunto:
Europa
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article