Summary. Investigation purpose – to assess the metabolic needs in victims in emergency situations (ES) with prolonged impairment of consciousness because of traumatic brin injury (TBJ). Investigation results and their analysis. Investigation results analysis showed that: – in comparison with calculated method a usage of the method of undirect calorimetry allow to assess the true needs of energy and to determine a plan of nutritional support in view of conducting of rehabilitation measures for ES victims with prolonged impairment of consciousness which were accommodated in day hospital during medical rehabilitation – an exact determination of body energy demand is principally important for forming of nutritional support plan. An alimentation of ES patients with prolonged impairment of consciousness was recommended to conduct on the main metabolic rate calculated with a Harrison-Benedict equation usage. There is a necessity of an additional metabolic monitoring during stationary period of rehabilitation taking into account an impact of physical activity on patient organism which provided at the time of curative physical exercises.