(1) The following research question was formulated: What are the relationships between enteral nutrition and selected anthropometric and blood biochemical parameters? The aim of this study was to provide an assessment of the nutritional status of patients within one year from their admission to the Enteral Nutrition Clinic. (2) The study group included 103 participants. For the purpose of analysing their nutritional status, the Subjective Global Assessment (SGA) and Nutritional Risk Score (NRS) scales were used, anthropometric measurements were taken, and blood laboratory tests were performed. The assessment of changes in the indicated parameters was conducted at three time intervals: upon admission (T0) and 6 and 12 months after admission (T6 and T12, respectively). (3) The study group showed a significant improvement in the circumference of their upper and lower limbs. Nutrition therapy had an effect on the levels of erythrocytes, iron concentration, the activity of liver enzymes, and C-reactive protein levels. (4) The enrolment of patients into the Nutritional Therapy Programme had a positive effect on the selected results. 1. Twelve months after the introduction of nutritional intervention, an increase in erythrocyte count was particularly marked, and there was a decrease in the CRP (C Reactive Protein) level as well as the activity of liver enzymes. There was no significant effect of enteral nutrition on albumin and protein values. 2. To ensure the greatest efficiency of enteral nutritional therapy, it is to be continued for more than six months. 3. Nutritional interventions resulted in a significant increase in upper and lower limb circumferences among the study group. 4. For the purpose of identifying patients at risk of malnutrition, medical personnel should systematically raise their qualifications, and educational measures on this issue should be implemented at the stage of medical training at medical universities.
Keywords: NRS; SGA; malnutrition; nutrition therapy.