Introduction:

Central adiposity as a triggering factor for early insulin resistance is a potential threat of metabolic and cardiovascular risk in pregnancy.

Objective:

To determine the discriminating capacity of abdominal fat over insulin resistance, diagnosed by the triglyceride/glucose-BMI index at the end of the first trimester of pregnancy.

Methods:

An analytical and observational study was carried out with 526 pregnant women of singleton pregnancy and gestational age between twelve and thirteen weeks, between 2016 and 2020. The triglyceride/glucose-BMI test was studied, together with abdominal fats by ultrasound. ROC (receiver operating characteristic) curves were used to discriminate insulin resistance at the end of the first trimester of gestation, when abdominal fats increase.

Results:

Subcutaneous fat presented the highest area under the curve in the discrimination of insulin resistance, with an acceptable level of sensitivity and specificity.

Conclusions:

Subcutaneous fat, although with low discriminative value, can be considered as a harbinger of insulin resistance and gestational diabetes. Further study of abdominal fat is required, given the knowledge of its impact on metabolic disorders in late gestation.

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