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Bioelectrical impedance vector analysis (BIVA) has been considered a promising technique in monitoring the nutritional and hydration status of patients with different types of diseases. The aim of this study was to assess the nutritional status provided by direct parameters of bioelectrical impedance analysis (BIA), BIVA and phase angle (PA), in patients with cervical and endometrial cancer undergoing surgical treatment, associating to other parameters of nutritional status and surgical outcomes.In a prospective cohort, 208 women eligible to surgical treatment, admitted from January to December 2015, were enrolled. Patients were assessed according to the body mass index (BMI), Patient Generated Subjective Global Assessment (PG-SGA) and BIA. The PA was categorized as below and above percentiles 25 and 50 of studied population.According to BMI and PG-SGA, most of them were classified as obese (69%) and well nourished (84%), respectively. PA was significantly lower in patients with endometrial cancer, PG-SGA B or C, and in those who remained longer in hospital. PA below 25th percentile was also associated with surgical complications. Comparison of BIVA detachment of our population with a reference population showed significant impedance vector displacement, characterized by decreased reactance value and increased resistance value in our group of patients.PA was associated with other parameters of nutritional status and surgical outcomes. BIVA was associated with nutritional status and length of hospital, but did not present significant result for surgical complications.