Recommended daily protein intake:

Normal / unstressed 0.75 g/kg/day

Critical illness/ injury 1.0 – 1.5 g/kg/day

Acute renal failure (undialyzed) 0.8 – 1.0 g/kg/day

Acute renal failure (dialyzed) 1.2 – 1.4 g/kg/day

Peritoneal dialysis 1.3 – 1.5 g/kg/day

Burns and Sepsis 1.5 – 2.0 g/kg/day

CVVHD 1.7 – 2.5 g/kg/day

Generally, the optimal protein intake in critically ill patients is given at twice the recommended daily amount (approximately 0.8 g per kg per day) of normal adults, at approximately 1.5 g per kg per day. With renal impairment, at least 1 g per kg should be provided and greater amounts given if tolerated or dialysis is initiated. In patients with liver failure at least 1 g per kg of standard protein should be provided and up to 1.5 g per kg if tolerated. This is done recognizing the overall impairments in protein utilization that accompanies metabolic stress, as well as the heightened needs during catabolism.

Ref: The Washington Manual of Critical Care; Irwin and Rippe’s Intensive Care Medicine