Evaluation of Thyroid Function During Pregnancy and Its Impact on Perinatal Outcomes
Keywords:
Pregnancy, thyroid function, perinatal outcomesAbstract
Objectives: The aim of this study was to evaluate the thyroid profile in pregnant women and to compare perinatal outcomes between those with normal thyroid function (euthyroid) and those with thyroid dysfunction.
Methodology: This prospective, cross-sectional study included 150 pregnant women. Of these, 75 were healthy women with normal thyroid profiles (Group A), and 75 were pregnant women diagnosed with thyroid disorders (Group B).
Results: The most common thyroid disorder identified during pregnancy was subclinical hypothyroidism, accounting for 68% of cases. No significant difference in gestational age at delivery was found between the two groups. However, the rate of cesarean section was significantly higher in Group B (48%) compared to Group A (24%) (p < 0.05). Intrauterine fetal demise (IUD) occurred in 2.67% of cases in Group A and 6.67% of cases in Group B. The mean birth weight of newborns in Group B (2.57 ± 0.50 kg) was significantly lower than that of Group A (2.92 ± 0.60 kg) (p < 0.001). Additionally, a lower APGAR score (≤6) at 1 and 5 minutes was observed more frequently in Group B (30.43% and 18.84%) compared to Group A (8.22% and 4.11%), showing a statistically significant difference (p < 0.01).
Conclusion: The findings indicate a significant association between thyroid disorders during pregnancy and adverse perinatal outcomes.
Downloads
References
Leese GP, Flynn RV, Jung RT, MacDonald TM, Murphy MJ, Morris AD. Increasing prevalence and incidence of thyroid disease in Tayside, Scotland: The Thyroid Epidemiology Audit and Research Study (TEARS). Clinical Endocrinology. 2008;68(2):311–316.
Casey BM, Leveno KJ. Thyroid disease in pregnancy. Obstet Gynecol. 2006;108:1283–1292.
Mannisto T, Vaarasmaki M, Hartikainen AL, et al. Perinatal outcome of children born to mothers with thyroid dysfunction or antibodies: a prospective population-based cohort study. J Clin Endocrinol Metab. 2009;94:772–779.
Smallridge RC, Glinoer D, Hallowell JG, Brent G. Thyroid function inside and outside pregnancy: what do we know and what don’t we know? Thyroid. 2005;15:54.
Lokitch G. Handbook of Diagnostic Biochemistry and Haematology in Normal Pregnancy. Philadelphia: CRC Press; 1993.
Larsson A, Palm M, Hansson LO, Axelsson O. Reference values for clinical chemistry tests during normal pregnancy. BJOG. 2008;115:874.
Mandel SJ, Spencer CA, Hollowell JG. Are detection and treatment of thyroid insufficiency in pregnancy feasible? Thyroid. 2005;15:44.
Rao VR, Lakshmi A, Sadhnani MD. Prevalence of hypothyroidism in recent pregnancy loss in first trimester. Indian J Med Sci. 2008;62:357–361.
Thanuja PM, Rajgopal K, et al. Thyroid dysfunction in pregnancy and its maternal outcome. IOSR J Dent Med Sci. 2014;13(1):11–15.
Das D, Chisty SJS, Barman K, Talukdar B, Talukdar U. Prevalence of hypothyroidism among first trimester pregnant women in lower part of Assam: a pilot study. J Obstet Gynaecol Barpeta. 2014;1(2):107–110.
Sahu MT, Das V, et al. Overt and subclinical thyroid dysfunction among Indian pregnant women and its maternal and foetal outcome. Obstet Gynecol. 2010;281(2):215–220.
Allan WC, Haddow JE, Palomaki GE, Williams JR, et al. Maternal thyroid deficiency and pregnancy complications: implications for population screening. J Med Screen. 2000;7:127–130.
Downloads
Published
How to Cite
Issue
Section
License

This work is licensed under a Creative Commons Attribution 4.0 International License.
You are free to:
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material for any purpose, even commercially.
Terms:
- Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.