Journal of the American College of Nutrition, Vol 10, Issue 4 355-363, Copyright © 1991 by American College of Nutrition

JOURNAL ARTICLE

The prognostic inflammatory and nutritional index in traumatized patients receiving enteral nutrition support

K. L. Vehe, R. O. Brown, D. A. Kuhl, B. A. Boucher, R. W. Luther and K. A. Kudsk
University of Tennessee, Memphis.

The prognostic inflammatory and nutritional index (PINI) is a clinical assessment tool which aggregates serum C-reactive protein (CRP), alpha 1-acid glycoprotein (AAG), prealbumin (PA), and albumin (ALB) concentrations into a single score. This study was conducted to characterize the index and its determinants over time in 15 critically ill trauma patients receiving enteral nutritional support (ENS). Patients received 1.4 g of protein/kg/day and 32 kcal/kg/day for at least 7 days using a nutritionally complete formula supplemented with whey protein. The PINI was calculated at baseline and on days 4, 7, 10, 14, 21, and 28. The PINI decreased significantly from baseline (186 +/- 202) to day 4 (116 +/- 86) and reached a nadir at day 14 (27 +/- 40). Serum CRP concentrations decreased significantly during the study period, while PA and ALB concentrations increased significantly. There was no change in the AAG concentration. Nitrogen balance increased significantly during the study period. The PINI was positively correlated with CRP concentration (r = 0.72, p = 0.0001) and negatively correlated with PA concentration (r = 0.56, p = 0.0004 and nitrogen balance (r = -0.51, p = 0.0018). The PINI decreased significantly during ENS of critically ill trauma patients, influenced primarily by a decrease in CRP concentration. Further studies are needed to characterize the PINI's performance as a prognostic tool.

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