[Nutrition guidelines for advanced chronic kidney disease (ACKD)]

Area of Science:

• Nephrology
• Nutritional Science
• Clinical Nutrition

Context:

• Managing chronic kidney disease (CKD) involves balancing the need to slow disease progression with the imperative to maintain adequate nutritional status.
• Protein intake recommendations for CKD patients are complex, requiring consideration of glomerular filtration rate (GFR) and potential uremic toxin accumulation.
• Nutritional assessment in CKD is multifaceted, encompassing protein status, fat stores, body composition, and overall energy and protein intake.

Purpose:

• To provide evidence-based guidelines for protein intake in patients with chronic kidney disease (CKD) across different stages.
• To highlight the importance of adequate energy intake and comprehensive nutritional assessment in CKD management.
• To define the role of protein-energy malnutrition (PEM) as an indicator for initiating kidney replacement therapy in advanced CKD.

Summary:

• Protein intake recommendations for CKD stages 1-3 (GFR > 30 mL/min) are approximately 0.75 g/kg/day.
• For CKD stages 4-5 (GFR < 30 mL/min), a protein intake of approximately 0.6 g/kg/day is advised to slow progression and reduce uremic toxins.
• Protein-energy malnutrition (PEM) in CKD patients, unresponsive to nutritional interventions, may indicate the need for kidney replacement therapy (dialysis or transplant) if GFR > 15 mL/min.

Impact:

• Establishes clear protein intake targets for different CKD stages, aiding clinicians in patient management.
• Emphasizes the critical role of nutritional assessment and intervention in improving outcomes for CKD patients.
• Provides criteria for initiating kidney replacement therapy based on nutritional status, potentially improving quality of life and survival.