[Nutrition in the liver transplant].

The evaluation of nutrition in patients who are candidates for liver transplants often indicates the presence of a state of malnutrition with regard to calories and proteins, which may lead to posterior complications. The transplant reverts the metabolic alterations in cases of good evolution, and there is evidence of a correct hepatic treatment of amino acids in the studies performed. Thus, this group of patients may be treated with a similar nutritional support to that indicated in other types of critical patients. On the other hand, in patients with an unfavourable evolution of the graft, the use of nutritional formulae that take into account an increase in the BCAA/AAA ratio is indicated. However, the high level of metabolic stress in the immediate postoperative period and the need for substrata to favour hepatic regeneration seem to indicate the need for early, aggressive nutritional treatment, which should be accompanied by a correct evaluation of its effect on postoperative evolution.