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KMID : 1034120150070030075
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Journal of Clinical Nutrition
2015 Volume.7 No. 3 p.75 ~ p.80
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Analysis of Current Use of Early Parenteral Nutrition and Clinical Significance of Non-protein Calorie: Nitrogen in Surgical Critically Ill Patients
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Heo Eun-Jeong
Park Ka-Young
Jeon Su-Jeong
Namgung Hyung-Wook
Lee Eun-Sook
Song In-Ae
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Abstract
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Purpose: Surgical critically ill patients require adequate nutrition support and the American Society for Parenteral and Enteral Nutrition (A.S.P.E.N.) guidelines recommend low non-protein calorie:nitrogen ratio (NPC:N ratio, 70∼100) for critically ill pateints. In this study, we assess the current use of early parenteral nutrition of surgical critically ill patients and analyze the clinical significance of NPC:N.
Methods: This is a retrospective study of critically ill adult patients who remained in the intensive care unit (ICU) for over 3 days and could not receive enteral nutrition for the first 7 days. Data on parenteral intake of patients were collected from electronic medical records. Association of NPC:N scores with clinical outcome (length of ICU stay, length; of hospital stay, duration of ventilation, and mortality) were analyzed using Pearson correlation and multiple regression.
Results: The study included 72 cases, average parenteral calorie intake was 14.6 kcal/kg/day and protein intake was 0.5 g/kg/day. We assessed the NPC:N scores to determine the patients’ NPC:N for the first 7 days in ICU close to the A.S.P.E.N guidelines. NPC:N scores showed weak negative correlation with length of hospital stay and duration of mechanical ventilation (r=?0.259, P=0.028; r=?0.495, P=0.001). Multiple regression adjusted with APACHE (Acute Physiology and Chronic Health Evaluation) II score, age, and body mass index showed correlation of higher NPC:N score with decreased length of hospital stay and shorter duration of ventilation (P=0.0001, P=0.035, respectively). However, length of ICU stay and mortality within 60 days showed no significant correlation with NPC:N scores.
Conclusion: Parenteral calories and protein intakes of critically ill patients in ICU were lower in comparison to A.S.P.E.N. recommendation in this study. Low NPC:N scores might be related to shorter length of hospital stay, duration of mechanical ventilation. Consultation of a nutritional support team could have a positive effect in providing appropriate nutrition support.
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KEYWORD
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Enteral nutrition, Parenteral nutrition, Protein-calorie malnutrition
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