Correlation of Body Mass Index (BMI) with Thyroid Function in Euthyroid Pregnant Women in Manipur, India
Journal Title: Journal of Clinical and Diagnostic Research - Year 2017, Vol 11, Issue 4
Abstract
Introduction: Body Mass Index (BMI) is significantly increased during pregnancy due to gain of weight with normal progression of pregnancy. The exact influence of thyroid function on BMI are ill defined in euthyroid pregnant women. Aim: To correlate serum levels of Free Triiodothyronine (FT3), Free Thyroxine (FT4) and Thyroid Stimulating Hormone (TSH) level with BMI of participant normal pregnant women in all the three trimesters. Materials and Methods: In this cross-sectional comparative study, total of 210 healthy pregnant women comprising of 70 participants in each trimester, attending Obstetrics Outpatient Department (OPD) for antenatal check-up were consecutively selected. Estimation of serum FT3, FT4 and TSH level was done by ELISA based methods. The correlation of BMI with serum levels of FT3, FT4 and TSH was done using Pearson correlation test (r) by SPSS version 21.0 software. Results: TSH level of participant normal pregnant women showed significant positive correlation with BMI during first (r=0.254 and p=0.034) and second trimester (r=0.263 and p=0.028) of pregnancy. FT4 level showed significant negative correlation in second (r= -0.454 and p<0.001) and third trimester (r= -0.351 and p=0.003) of pregnancy. Correlation between BMI and FT3 level showed no significant association in any of the trimesters. Conclusion: BMI correlates positively with TSH level in first and second trimesters while it correlates negatively with FT4 level in second and third trimesters, but, failed to demonstrate significant association with FT3 level in any of trimesters in euthyroid pregnant women. Serum TSH along with FT4 level appears more useful modality compared to serum TSH alone for targeted thyroid screening particularly in obese pregnant women.
Authors and Affiliations
Sumit Kumar, T. Chiinngaihlun, M. Rameswar Singh, O. Punyabati
Keywords
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- EP ID EP337100
- DOI 10.7860/JCDR/2017/25258.9726
- Views 118
- Downloads 0
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