Creatinine arm index as alternative for creatinine height index

Abstract

Nutritional assessment of elderly people is limited due to a lack of age-corrected standards. The objective of this study was to develop a new, more age-independent index for nutritional assessment by correcting the creatinine height index (CHI) for the age-induced changes in its variables. This might improve the differentiation between physiological reduction in muscle mass in elderly people and the changes induced by malnutrition. Seventy-four elderly and 100 young healthy volunteers were compared by anthropometric and biochemical-assessment variables. From the high correlation between total arm length and body length (r = 0.86; P less than 0.001) and the use of an alternative formula to calculate ideal body weight (IBW) from height and wrist circumference, a relatively age-independent estimate of IBW was determined. Creatinine arm index, as an adapted index of CHI, is proposed based on this age-independent IBW estimation and a specific creatinine coefficient for different age groups.

Nutritional assessment in geriatric cancer patients

“…Second, the use of BMI is enforced. However, in older people, the body length is not a constant factor [35]. It tends to decrease with age.…”

Site-Specific Patterns of Surgical Site Infections and Their Early Indicators After Elective Colorectal Cancer Surgery

“…The CHI, an index of lean body mass, is defined as the urinary creatinine excretion during a 24-hour period expressed as a percentage of the value expected to be excreted by normal patients of the same height and gender. 10,11 All patients were investigated after informed consent was obtained. The study protocol was approved by the institutional review board.…”

Equations for predicting height for elderly Mexican Americans are not applicable for elderly Mexicans

“…An accurate measurement of standing height is needed for the determination of indices assessing nutritional status, such as weight-for-height, the body mass index and the creatinine-height index, and for the determination of basal energy expenditures (Haboubi et al, 1990;Van Itallie et al, 1990;Barlett et al, 1991;Van-Hoeyweghen et al, 1992;Lasey et al, 1993;Baumgartner et al, 1996). Weight and height are also used to normalize creatinine clearance to body surface area, which can influence doses of renally excreted medication (Kubena et al, 1991;Van-Hoeyweghen et al, 1992). Loss of height with age is correlated with osteoporosis.…”