utilidad del índice homa-ir con una sola determinación de insulinemia para diagnosticar resistencia insulínica usefulness of homa-ir index with an only insulinemia determination to diagnose an insulin resistance
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Abstract
Introduction: HOMA-IR index is a simple and not much invasive procedure allowing by a validated and well established formula to specify exactly a value expression of insulin resistance. To estimate the HOMA-IR index with an only numerical value of insulinemia could to present a greater variability, something that could be solved with at least the mean of three insulinemias, according to original formula. En some studies it is habitual to perform it with a single insulinemia determination. Thus, we conducted a study in patients presenting type 2 diabetes and to compare the results as regards the sensitivity and specificity with a single blood determination for insulinemia and glycemia. Objectives: to assess the sensitivity and specificity of each of insulinemia determinations performed each 5 min versus the mean of these determinations during the application of formula for HOMA-IR index. Methods: sixty patients diagnosed with type 2 diabetes attended in the Center for Diabetic Care of La Habana were studied. They had a diabetes course time lower than 5 years as average with predominance of body excess weight recruited during 6 months in a consecutive way and the carrying out of fasting insulinemias and glycemias determinations by trocar and venous blood extraction at 0,5 and 10 min for a calculation of Mathews's hemostatic model known as HOMA-IR. Results: a 88,3 % had a HOMA-IR greater than 3,2. The sensitivity of a single sample of insulinemia, although high to confirm the insulin resistance diagnosis, it is variable and specificity of one of samples was low with a 14%. There is an appropriate concordance among the positive predictor values with sensitivity and the negative predictive values with the test specificity. Conclusions: a single insulinemia determination to study HOMA-IR is useful in daily practice, although it is necessary much accuracy to apply the original formula for a better reproducibility.
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yero2011revistautilidad
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| Authors | ;José Arturo Hernández Yero;Ángela Tuero Iglesias;David Vargas González |
| Journal | journal of international humanitarian action |
| Year | 2011 |
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