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1,204 results on '"Block, G"'

109. 242: A Randomized Controlled Trial to Evaluate the Effects of Cinacalcet Plus Low-Dose Vitamin D on Vascular Calcification in Hemodialysis Patients

Author

Raggi, P., primary, Chertow, G., additional, Block, G., additional, Urena, P., additional, Csiky, B., additional, Naso, A., additional, Nossuli, K., additional, Moustafa, M., additional, Goodman, W., additional, Lopez, N., additional, Downey, G., additional, Dehmel, B., additional, and Floege, J., additional

Published
2010
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112. Near infra-red interactance for longitudinal assessment of nutrition in dialysis patients.

Author

Kalantar-Zadeh, K, Kalantar-Zadeh, K, Block, G, Kelly, MP, Schroepfer, C, Rodriguez, RA, Humphreys, MH, Kalantar-Zadeh, K, Kalantar-Zadeh, K, Block, G, Kelly, MP, Schroepfer, C, Rodriguez, RA, and Humphreys, MH

Abstract

ObjectiveSerial nutritional assessment of dialysis patients is important because of the high incidence and prevalence of malnutrition in these patients. Near-infrared interactance (NIR) technology may provide a practical and reliable method to evaluate body fat and its changes over time in dialysis patients.DesignLongitudinal study consisting of 2 cross-sectional measurements, 2 months apart.SettingOutpatient dialysis unit affiliated to a tertiary care community medical center.PatientsSeventy-one dialysis patients (35 men, 36 women), 57 +/- 15 years old, who have been on dialysis between 5 months and 11 years (43 +/- 30 months). Twelve additional patients with similar features were studied during the second round.InterventionNone.Main outcome measuresNIR was used to estimate the body fat percentage. Other simultaneous measurements included subjective global assessment, anthropometric indices including midarm circumference, triceps and biceps skinfold thickness, and body mass index, and some laboratory values including albumin, transferrin, and cholesterol. NIR measurement was performed by placing a Futrex sensor on the nonaccess upper arm for several seconds, after logging the required individual data (sex, weight, height, and body frame), along with uniform physical activity levels for all patients, into a mini-computer.ResultsSeventy-one dialysis patients underwent nutritional and laboratory measurements. A second measurement round was performed 8 to 9 weeks after the first one and included 12 additional patients. Within each cross-sectional round, Pearson correlation coefficients (r) between the NIR score and nutritionally relevant variables were significant for anthropometric values (0.56 to 0.82) as well as low cholesterol and creatinine (0.22 to 0.30). The two serial NIR measurements on the same patients were highly consistent over the 2-month study interval (r = 0.96), whereas anthropometric values showed greater variability. The within-person coefficient of

Published
2001

114. Reply

Author

Block, G. A., primary, Zeig, S., additional, Sugihara, J., additional, Chertow, G. M., additional, Chi, E. M., additional, Turner, S. A., additional, and Bushinsky, D. A., additional

Published
2008
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