In hemodialysis patients, what does low muscle mass indicate about nutrition and inflammation?

• A. Good nutrition status and low inflammation
• B. Poor nutrition status and inflammation
• C. Excellent energy stores with high resilience
• D. Normal inflammatory markers with adequate nutrition

Answer: (B)

Low muscle mass in hemodialysis patients signals protein-energy wasting, a state where inadequate nutrition combines with accelerated protein breakdown driven by chronic inflammation. In CKD and during dialysis, inflammatory cytokines promote muscle proteolysis and suppress protein synthesis, while other factors like metabolic acidosis and catabolic hormones amplify this loss. When lean tissue is reduced, it reflects both insufficient nutrient intake and ongoing inflammatory processes, rather than adequate energy reserves or a lack of inflammation. This combination is linked to worse outcomes, guiding the need to optimize protein and energy intake and address inflammation and acid-base balance.