Objective: Providing adequatenutrition to critical patients as earlyas possible following internalization isimportant. Hospitalized patients are amongthe highest risk groups for malnutrition. Material and Method: A questionnaireincluding 21 questions about clinician sdemographics and nutritional therapiesin intensive care units was e-mailed toanesthesiologists only. Partially answeredquestionnaires were not included in theanalysis. Results: A total of 121 questionnaires wereanalyzed. Every three out of four clinicianreported application of nutritional therapyin intensive care unit, and according to theguidelines. While 75% of the cliniciansfollowing the guidelines were routinelyevaluating nutritional status of their patients,this ratio was only 19% in clinicians notfollowing the guidelines (p=0.0003).Enteral nutrition was the first choice of allclinicians, and majority of the clinicians (90,74.4%) preferred central venous catheterfor parenteral nutrition. The most importantcriteria for the choice of parenteral nutritionalsolution were reported as calories pervolume and presence of the solution atthe hospital by all clinicians. Among theclinicians following the guidelines, 70%were administering fish oil, 95% wereadministering glutamin to their patients.Among the clinicians not following theguidelines, these ratios were 44% and 80%,respectively (p=0.01 and 0.02). Conclusion: We are in opinion that followingthe guidelines instead of the clinician sindividual forecasts may improve thenutritional therapy.