The Interrelationships Among Albumin, Nutrient Intake, and Inflammation in Elderly Recuperative Care Patients

Overview

Journal J Nutr Health Aging

Specialties Geriatrics
Nutritional Sciences

Date 2011 Mar 26

PMID 21437564

Citations 15

Authors

D H Sullivan

L E Johnson

R A Dennis

P K Roberson

M Heif

K K Garner

M M Bopp

Affiliations

Soon will be listed here.

Abstract

Objectives: To examine the interrelationships among low serum albumin, nutritional depletion, and ongoing inflammation in older patients recovering from illness.

Design: A prospective cohort study.

Setting: A transitional care unit (TCU) within a Department of Veterans Affairs hospital nursing home care unit.

Participants: 275 older veterans (mean age=78.9 ± 7.5y, 99% male) admitted for recuperative care and rehabilitation.

Measurements: At admission and discharge (median LOS 24d, IQR 16 to 44d), each subject completed a comprehensive standardized evaluation including a nutritional assessment and measurement of serum albumin, C-reactive protein (CRP), interleukin-6 (IL-6) and its soluble receptor, and tumor necrosis factor-alpha (TNF-α) and its soluble receptors (sTNF-RI and II). Complete nutrient intake assessments (calorie counts) were performed daily.

Results: Both the discharge albumin and the change in albumin (discharge minus admission) were strongly and inversely correlated with various indicators of inflammation, particularly CRP and IL-6. Change in CRP was the strongest correlate of change in albumin (R2 = 0.21, P<.001) and discharge IL-6 the strongest correlate of discharge albumin (R2 = 0.21, P<.001). Nutrient intake also correlated with albumin and its change, but entered the multivariable models after inflammatory indicators and explained a smaller portion of the variance. Although there were significant interactions between time and both nutrient intake and inflammation, the relative importance of inflammation as a potential determinant of the serum albumin concentration appeared to remain unchanged with longer periods of observation.

Conclusions: Among elderly patients admitted to a TCU, inflammation appears to be a more powerful determinant of albumin and its change during the hospitalization than is nutrient intake. Further study is needed to prove causality and to determine whether the relative importance of inflammation on the albumin concentration diminishes with more prolonged periods of observation.

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