Comportamiento de las formulas Índice de Pronóstico Nutricional adaptado (IPNa) de la original de mullen y el Índice de Riesgo Nutricional (IRN) en pacientes de cirugías electivas

Abstract

In 1999 the Mullen and Buzby's formula was adapted, eliminating hypersensitivity skin tests and removing the alfa factor with coefficients similar to the original, obtaining a new formula called adapted Nutritional Prognostic Index (aNPI). Objective: To determine the behavior of this new formula and the nutritional risk index with post surgical complications. Methodology: 110 elective patients for surgery were studied by carrying out pre- and post-operational evaluation. Results: the average age was 50 years old; 52% showed signs of being overweight or obese; 89,15% had normal serum albumin and 60% showed a deficit of transferrine; 75,5% had low risk NPIa and 62,7% had a normal NRI. The main surgeries were hysterectomies and cholecystectomies, 92% were without complications (p=0,001). It was found a statistically significant relationship between each classification of nutritional index with the presence o absence of complications (p=0.001). When comparing these indexes, the statistical difference is maintained (p=0.00). The same was observed when comparing the classification of this two indexes with complications (p=0.00). When comparing these two indexes, the multiple regression analysis did not show any significant difference with the type of complication, although there was a significant difference with serum albumin levels and the type of surgery. Conclusion: in this study the aNPI and NRI behaved similarly with the majority of variables under study.