Male 50 years, without antecedent of interest, in ICU by presents acute respiratory insufficiency, with bilateral infiltrated cotonny, to the few hours of intervention by perforatin gastric peritonitis (five evolution days. He need mechanical ventilation with FiO2 50% and PEEP 10, sedating with midazolam and Cl. mórfico, without fever and stable haemodinamic, without inotropic support. APACHE to 1st day12. Present, at this time, the following nutritional data, in FASTING situation: Weight 60 kg Transferrin 90 mg/dl (252 - 429) Height 165 cm Albumin 1,2 g/dl (3,2 - 5,5) Ideal Weight 63 kg. PreAlbumin <7 md/dl (17 -42) Harris-Benedict 1310 cal/día Colesterol 58 mg/dl (150 -220) Urine Nitrogen 19 gr/24h Index Creatinina/Height 73% RESPONSES: ¿How many caloríes will you suggest? cálculation by?: Harris-Benedict x Factor or Calorias x Kg de peso or Segun Mi Protocolo or Segun mi experiencia or other calculation for calories: ¿ How many Nitrógen ? cálculation by ?: gr nitrogeno x kg peso or Segun Mi Protocolo or Segun mi Experiencia or other calculation for nitrógen: If Parenteral, what product will you suggest Type of carbohidratos: Glucosa FGX Type of grasas: LCT LCT/MCT Sin grasas Percentage CH/Grasas: 70/30 60/40 50/50 40/60 30/70 Type of aminoácidos: Estandar Ramificados Esenciales Fisher If Enteral, what product will you suggest Type of enteral product: Polimerica Concentrada Hiperproteica Inmunonutricion Oligomerica Especial estres Especial Renal Especial Diabetes Especial Pulmonar Especial Hepatica ¿Observations.. ?