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Use of bioelectrical impedance analysis for the assessment of nutritional status in critically ill patients

Authors
 Yoojin Lee  ;  Oran Kwon  ;  Cheung Soo Shin  ;  Song Mi Lee 
Citation
 Clinical Nutrition Research, Vol.4(1) : 32-40, 2015-01 
Journal Title
 Clinical Nutrition Research 
ISSN
 2287-3732 
Issue Date
2015-01
Keywords
Critical illness ; Electric impedance ; Intensive care units ; Nutrition assessment
Abstract
Malnutrition is common in the critically ill patients and known to cause a variety of negative clinical outcomes. However, various conventional methods for nutrition assessment have several limitations. We hypothesized that body composition data, as measured using bioelectrical impedance analysis (BIA), may have a significant role in evaluating nutritional status and predicting clinical outcomes in critically ill patients. We gathered clinical, biochemical, and BIA data from 66 critically ill patients admitted to an intensive care unit. Patients were divided into three nutritional status groups according to their serum albumin level and total lymphocyte counts. The BIA results, conventional indicators of nutrition status, and clinical outcomes were compared and analyzed retrospectively. Results showed that the BIA indices including phase angle (PhA), extracellular water (ECW), and ECW/total body water (TBW) were significantly associated with the severity of nutritional status. Particularly, PhA, an indicator of the health of the cell membrane, was higher in the well-nourished patient group, whereas the edema index (ECW/TBW) was higher in the severely malnourished patient group. PhA was positively associated with albumin and ECW/TBW was negatively associated with serum albumin, hemoglobin, and duration of mechanical ventilation. In non-survivors, PhA was significantly lower and both ECW/TBW and %TBW/fat free mass were higher than in survivors. In conclusion, several BIA indexes including PhA and ECW/TBW may be useful for nutritional assessment and represent significant prognostic factors in the care of critically ill patients.
Files in This Item:
T201506847.pdf Download
DOI
10.7762/cnr.2015.4.1.32
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Anesthesiology and Pain Medicine (마취통증의학교실) > 1. Journal Papers
Yonsei Authors
Shin, Cheung Soo(신증수) ORCID logo https://orcid.org/0000-0001-7829-8458
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/178454
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