A variety of mechanisms have been proposed to explain the malnutrition and body mass loss in UC patients.
<bold>The aim of the study </bold>trial was a nutritional state assessment of 347 UC patients, admitted for surgical treatment, and the evaluation of the impact of this state on the postoperative course in this group of patients.
<bold>Material and methods. </bold>We referred the results of nutritional state assessment to the length of time of postoperative hospitalization of patients.
<bold>Results. </bold>Through application of the Kruskal-Wallis test we found statistically significant, but weakly expressed, differences between the values of nutritional state parameters and period of hospitalization of patients. The applied U Mann-Whitney test, with statistically significant results with p <0.05, showed statistically significant differences between cured and dead subgroups in: 1) loss of body mass in 6 months before hospitalization (p = 0.000033), 2) hemoglobin level (p = 0.006676), 3) total lymphocyte count (TLC) (p = 0.025242), 4) total serum protein level (p = 0.003485), 5) serum albumin level (p =0.00165). Differences in BMI values were statistically negligible (p = 0.969397).
<bold>Conclusions. </bold>The body mass loss in 6 months before admission, total lymphocyte count and serum albumin level are the reference parameters of the nutritional state of UC patients on admission to surgery