Conelusions Nutrition support is important for surgical critical patients with malnutrition, due to their unique metabolic characteristics, affecting their convalesce and prognosis.

• 结论由于外科危重病人存在独特的代谢特点，大部分病人存在营养不良，故营养支持对外科危重病人至关重要，直接影响病人的康复和预后。