Resumen

URDANETA, JM et al. Subclinical Hypothyroidism in Infertile Women. Rev. argent. endocrinol. metab. [online]. 2013, vol.50, n.4, pp.233-240. ISSN 1851-3034.

Objective: To compare the frequency of subclinical hypothyroidism (SCH) among women with primary (PI) and secondary infertility (SI) who presented for gynecology consultation at Maternity "Dr. Armando Castillo Plaza" in Maracaibo, Zulia state. Methods: Comparative and applied research with non-experimental, contemporary transactional and field design, including 100 women with infertility, separated into two groups matched for the type of infertility. Thyroid hormone profile: thyroid stimulating hormone (TSH), free thyroxine (FT4) and free triiodothyroxine (FT3) were measured in these women. Results: There were no statistically significant differences between women with PI or secondary SI, in terms of age, menarche, sexarche, number of partners and length of cohabitation. In women with PI the ovulatory factor prevailed (50 %) followed by the tube-peritoneal (34 %), while among patients with SI the main factor was the tube-peritoneal (38 %) followed by the ovulatory (28 %); only the ovulatory factor showed a significant difference (p < 0.05). PI patients had significantly higher concentrations of both TSH (3.14 ± 2.08 vs. 2.33 ± 1.59, p <0.05) and FT4 (1.19 ± 0, 37 vs. 1.04 ± 0.25, p < 0.05); the prevalence of SCH was determined at 17% in infertile women, being more frequent and significant in the PI group of women than in SI patients (26 % vs. 8 %, OR [95 % CI] = 4.04 [1.26-13.43], p < 0.05), while according to the severity of SCH all cases detected in both groups were within grade I. Conclusion: There is a higher prevalence of SCH in women with PI than in patients with SI.

Palabras clave : Infertility; Subclinical Hypothyroidism; TSH.

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