Dietary Energy and Protein Intake and Nutrition-Specific Quality of Life

Orlando—To provide optimal nutrition in a population at risk for protein energy wasting, guidelines from the National Kidney Foundation Kidney Disease Outcomes Quality Initiative (KDOQI) recommend 30 to 35 calories per kilogram and 1.2 grams of protein per kilogram per day. Because of the relationship between morbidity and mortality, health-related quality of life is regularly assessed in patients on maintenance hemodialysis. According to Malki Waldman and colleagues, the assessments of health-related quality of life use tools that minimally address patient nutrition.

The Nutrition Specific Quality of Life (NSQOL) tool measures perceptions regarding the ways in which dialysis interferes with eating behaviors. Mr. Waldman et al. recently conducted a cross-sectional secondary analysis designed to examine relationships between dietary energy and protein intake and NSQOL. The researchers also described food group servings among patients on maintenance hemodialysis using a 24-hour diet recall collected on the day of dialysis. They reported results during a poster session at the NFK 2017 Spring Clinical Meetings in a poster titled Relationships between Dietary Energy and Protein Intake and Nutrition Specific Quality of Life in Individuals on Maintenance Hemodialysis.

The analysis utilized data collected from 144 participants in the Development and Validation of a Predictive Energy Equation in Hemodialysis study. Relationships were evaluated using Spearman’s correlation coefficients.

Mean age of the participants was 55.9 years, 84% were African American, and 59% were male. Mean dietary energy intake was 17.1 kilocalorie per kilogram and mean dietary protein intake was 0.7 grams per kilogram. Out of 15 points, mean NSQOL composite score was 9.5. There was a small positive correlation between NSQOL and mean dietary energy intake (rho=0.198; P<.001). The most frequently consumed food groups were animal protein and grains.

In conclusion, the researchers said, “In this sample, dietary energy intake and dietary protein intake reported on a treatment day were lower than KDOQI recommendations and associated with their NSQOL. Future research should include dietary intake data collected from non-hemodialysis treatment days to further determine how NSQOL may impact overall eating behaviors.”

Source: Waldman M, Brody R, Marcus AF. Relationships between dietary energy and protein intake and nutrition specific quality of life in individuals on maintenance hemodialysis. Abstract of a poster presented at the National Kidney Foundation 2017 Spring Clinical Meetings, April 19-22, 2017, Orlando, Florida.