Effects of subclinical hypothyroidism on maternal and perinatal outcomes during pregnancy: a single-center cohort study of a Chinese population
| Autor: | Enling Ye, Qing-Shou Chen, Wen-Jun Du, Guang-Xin Si, Jie Dai, Xuemian Lu, Qian Zhang, Hong Yang, Chi Zhang, Liangmiao Chen, Lechu Yu |
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| Rok vydání: | 2014 |
| Předmět: |
Adult
medicine.medical_specialty China Thyroid Hormones Intrauterine growth restriction lcsh:Medicine Endocrine System Biochemistry Maternal hypothyroidism Endocrinology Hypothyroidism Pregnancy Risk Factors medicine Medicine and Health Sciences Humans Euthyroid Prospective Studies lcsh:Science Thyroid Multidisciplinary Placental abruption business.industry Obstetrics lcsh:R Pregnancy Outcome Biology and Life Sciences medicine.disease Hormones Gestational diabetes Pregnancy Complications Low birth weight lcsh:Q Female Thyroid function medicine.symptom Anatomy business Research Article |
| Zdroj: | PLoS ONE PLoS ONE, Vol 9, Iss 10, p e109364 (2014) |
| ISSN: | 1932-6203 |
| Popis: | Objective Adverse maternal outcomes and perinatal complications are closely associated with overt maternal hypothyroidism, but whether these complications occur in women with subclinical hypothyroidism (SCH) during pregnancy remains controversial. The aim of this study was to evaluate the effects of SCH on maternal and perinatal outcomes during pregnancy. Methods A prospective study of data from 8012 pregnant women (371 women with SCH, 7641 euthyroid women) was performed. Maternal serum samples were collected in different trimesters to examine thyroid hormone concentrations. SCH was defined as a thyroid stimulating hormone concentration exceeding the trimester-specific reference value with a normal free thyroxine concentration. The occurrence of maternal outcomes, including gestational hypertension (GH), gestational diabetes mellitus, placenta previa, placental abruption, prelabor rupture of membranes (PROM), and premature delivery; and perinatal outcomes, including intrauterine growth restriction (IUGR), fetal distress, low birth weight (LBW; live birth weight ≤2500 g), stillbirth, and malformation, was recorded. Logistic regression with adjustment for confounding demographic and medical factors was used to determine the risks of adverse outcomes in patients with SCH. Results Compared with euthyroid status, SCH was associated with higher rates of GH (1.819% vs. 3.504%, P = 0.020; χ2 = 7.345; odds ratio (OR), 2.243; 95% confidence interval (CI), 1.251–4.024), PROM (4.973% vs. 8.625%, P = 0.002; χ2 = 72.102; adjusted OR, 6.014; 95% CI, 3.975–9.099), IUGR (1.008% vs. 2.965% |
| Databáze: | OpenAIRE |
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