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Medicina (B.Aires) ; 76(6): 355-358, dic. 2016.
Article in Spanish | LILACS | ID: biblio-841609

ABSTRACT

La diabetes mellitus (DM) y la disfunción tiroidea (DT) son dos frecuentes desórdenes endocrinos. La DT subclínica no reconocida puede afectar adversamente el control metabólico y aumentar el riesgo cardiovascular. Nuestro objetivo fue determinar la prevalencia de DT en pacientes con diabetes mellitus tipo 2, en un estudio observacional de corte transversal con evaluación clínica y de laboratorio a 205 pacientes consecutivos atendidos en consulta externa del Centro de Endocrinología, Diabetes y Nutrición de la ciudad de Concepción, Tucumán, Argentina. La disfunción tiroidea se clasificó como hipotiroidismo clínico con TSH > 4.20 μUI/ml y T4L < 0.93 ng/dl; hipotiroidismo subclínico con TSH > 4.20 μUI/ml y T4 libre 0.93 a 1.70 ng/dl. hipertiroidismo subclínico con TSH < 0.27 μUI/ml y T4 libre en rango normal (0.93-1.70 ng/dl). Se consideró hipertiroidismo clínico con TSH < 0.27 μUI/ml y T4 libre > 1.70 μUI/ml. Se diagnosticó autoinmunidad con anti-TPO > 34 UI/ml. La prevalencia de DT en los diabéticos tipo 2 fue 48% (n = 92). En aquellos que negaron DT previa, la prevalencia fue 40% (n = 37), 15 presentaron hipotiroidismo subclínico (45%). En el total de la población estudiada la prevalencia de hipotiroidismo subclínico fue 8%. En forma global la prevalencia de DT subclínica fue 9% (n = 17) y la de anticuerpos anti-TPO 13% (n = 25). La detección temprana de disfunción tiroidea en diabetes mellitus tipo 2 debería realizarse rutinariamente, dada la elevada tasa de nuevos casos diagnosticados y el aumento del riesgo cardiovascular asociado a la disfunción tiroidea no diagnosticada oportunamente.


Diabetes mellitus (DM) and thyroid dysfunction (TD) are two common endocrine disorders. The unrecognized subclinical TD may adversely affect metabolic control and increase cardiovascular risk. Our aim was to investigate the prevalence of TD in patients with type 2 diabetes mellitus in an observational cross-sectional study. Clinical and laboratory evaluation was performed to 205 consecutive outpatients at Endocrinology Diabetes and Nutrition Center in Concepcion City, Tucuman, Argentina. Thyroid dysfunction was classified as clinical hypothyroidism with TSH > 4.20 mUI / ml and FT4 < 0.93 ng / dl, subclinical hypothyroidism with TSH > 4.20 mUI / ml and free T4 0.93 to 1.70 ng / dl. Subclinical hyperthyroidism was considered with TSH < 0.27 mUI / ml and free T4 was in normal range (0.93 to 1.70 ng / dl); and clinical hyperthyroidism with TSH < 0.27 mUI / ml and free T4 >1.70 mUI / ml. Autoimmunity was diagnosed with anti-TPO > 34 IU / ml. TD prevalence in type 2 diabetic patients was 48% (n = 92). In subjects who denied prior TD, the prevalence was 40% (n = 37), 15 with subclinical hypothyroidism (45%). In the whole study population prevalence of subclinical hypothyroidism was 8%. Globally, subclinical DT prevalence was 9% (n = 17) and anti-TPO 13% (n = 25). Early detection of thyroid dysfunction in patients with type 2 diabetes mellitus should be performed routinely, given the high rate of newly diagnosed cases, and increased cardiovascular risk associated with undiagnosed thyroid dysfunction.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Aged, 80 and over , Diabetes Mellitus, Type 2/epidemiology , Hyperthyroidism/epidemiology , Hypothyroidism/epidemiology , Argentina/epidemiology , Thyroid Gland/physiopathology , Thyrotropin/blood , Cardiovascular Diseases/etiology , Prevalence , Cross-Sectional Studies , Risk Factors , Diabetes Mellitus, Type 2/physiopathology , Hyperthyroidism/physiopathology , Hypothyroidism/physiopathology
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