ORIGINAL ARTICLE
Year : 2016  |  Volume : 7  |  Issue : 1  |  Page : 80-84

Subclinical hypothyroidism in pregnancy: An emerging problem in Southern West Bengal: A cross-sectional study


1 Department of Gynaecology and Obstetrics, Midnapore Medical College and Hospital, Kolkata, West Bengal, India
2 Department of Anaesthesiology, Midnapore Medical College and Hospital, Kolkata, West Bengal, India
3 Department of Anaesthesiology, College of Medicine and Sagore Dutta Hospital, Kolkata, West Bengal, India
4 Department of Anaesthesiology, IPGMER, Kolkata, West Bengal, India

Correspondence Address:
Anjan Das
174, Gorakshabashi Road, Royal Plaza Apartment (4th Floor, Flat No. 1), Nagerbazar, Kolkata - 700 028, West Bengal
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0976-9668.175080

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Background: Prevalence of subclinical hypothyroidism (SCH) in pregnancy varies widely in different parts of our country, but it has multiple adverse outcomes in both the mother and fetus. Objectives: This study was conducted to evaluate the prevalence of SCH in pregnant women during the first trimester and to identify the prevalence of thyroid autoimmunity in pregnant women. Materials and Methods: This cross-sectional study (March 2014 to February 2015) was conducted among the pregnant women attending antenatal clinic in their first trimester at a tertiary care center. Morning samples of study participants were analyzed for free thyroxin (FT4), thyroid stimulating hormone (TSH), and thyroid peroxidase antibody (TPO Ab). Data expressed as mean ΁ standard deviation and percentage (%) as applicable. Results: Of the 510 subjects, 168 had TSH value >2.5 μIU/ml (32.94%) with normal FT4 and they were diagnosed as SCH. TSH level >4.5 μIU/ml was estimated in 13.92% (71) of the subjects. TPO Ab was positive in 57 (33.93%) of subclinical hypothyroid and 5 (1.47%) of normal subjects. 70.42% (50) of the subjects with TSH >4.5 μIU/ml had positive TPO Ab. Conclusions: Prevalence of SCH is high in South Bengal and routine thyroid screening at the first antenatal visit should be done to reduce the social and financial burden caused by SCH.


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