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Inicio Medicina Clínica The rate of primary hypothyroidism in diabetic patients is greater than in the n...
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Vol. 138. Issue 11.
Pages 475-477 (April 2012)
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Vol. 138. Issue 11.
Pages 475-477 (April 2012)
Brief report
The rate of primary hypothyroidism in diabetic patients is greater than in the non-diabetic population. An observational study
La proporción de hipotiroidismo primario en pacientes diabéticos es mayor que la de pacientes no diabéticos. Estudio observacional
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Hector-Eloy Tamez-Péreza,
Corresponding author
hectoreloytamez@aol.com

Corresponding author.
, Esteban Martínezb, Dania L. Quintanilla-Floresa, Alejandra L. Tamez-Peñaa, Hugo Gutiérrez-Hermosillob, Enrique Díaz de León-Gonzálezb
a Subdirección de Investigación, Facultad de Medicina U.A.N.L., Monterrey, NL, Mexico
b Departamento de Medicina Interna, Clínica Nova, Monterrey, NL, Mexico
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Table 1. Demographic characteristics.
Abstract
Background and objective

The aim of our study was to identify the rate of diabetic patients treated for hypothyroidism and compare them with a group without type 2 diabetes mellitus (T2DM).

Patients and methods

We reviewed the computerized clinical records of 5161 patients. We identified diabetic patients treated with l-thyroxine. We compared the prevalence of PH with those patients under treatment with levothyroxine without T2DM. We excluded patients with a thyroid neoplasia, thyroid surgery, panhypopituitarism, or surgical complications of multinodular goiter or a thyroid nodule. Subclinical hypothyroidism was not considered.

Results

We included 1848 adult patients with T2DM in the study group, 58% women and 42% men. For the control group, we included 3313 non-diabetic patients, 55% women and 45% men. The mean age in the study group was 52±7 years, and 47±4 years in the control group (p<.001). The rate of hypothyroidism in the study group was 5.7%, and in the control group 1.8% (odds ratio of 3.45; 95% confidence interval 2.51–4.79) (p<.001).

Conclusion

A strong association between T2DM and hypothyroidism was found. We recommend a thyroid profile in all patients with T2DM, similar to the recommendation in type 1 diabetes mellitus.

Keywords:
Type 2 diabetes mellitus
Primary hypothyroidism
Cardiovascular risk
Resumen
Fundamento y objetivo

Nuestro objetivo fue determinar la proporción de pacientes con diabetes mellitus tipo 2(DM2) con hipotiroidismo primario (HP) y compararlos con un grupo sin diabetes.

Pacientes y métodos

Se revisó una base electrónica que incluyó 5.161 pacientes. Se identificaron los pacientes con DM2 tratados con levotiroxina. Se comparó con la prevalencia de HP en aquellos pacientes sin DM2. Se excluyeron enfermos con neoplasia o cirugía de tiroides, panhipopituitarismo o complicaciones quirúrgicas de bocio multinodular o nódulo tiroideo.

Resultados

Se incluyeron 1.848 pacientes adultos con DM2 en el grupo de estudio, 58% mujeres y 42% hombres. Para el grupo control se revisaron 3.313 individuos, 55% mujeres y 45% hombres. La edad media del grupo de estudio fue de 52±7 años, y 47±4 años en el grupo control (p<0,001). La tasa de hipotiroidismo en el grupo de estudio fue de 5,7% (n=105) y en el grupo control 1,8% (n=60) (odds ratio 3,45; intervalo de confianza del 95% 2,51-4,79) (p<0,001).

Conclusión

Existe una asociación significativa entre HP y DM2. Recomendamos el perfil tiroideo en todos los pacientes con DM2, similar a lo sugerido en la diabetes mellitus tipo 1.

Palabras clave:
Diabetes mellitus tipo 2
Hipotiroidismo primario
Riesgo cardiovascular

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