Body composition assessment via bioelectrical impedance analysis in ICU patients receiving enteral nutrition at Hanoi Medical University Hospital

Nguyen Thuy Linh, Pham Thi Tuyet Chinh, Ta Thanh Nga, Nguyen Thi Minh Tam

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Abstract

A cross-sectional study was conducted to evaluate the body composition of ICU patients on the 8th day of enteral nutrition using Bioelectrical Impedance Analysis (BIA). Data from 36 critically ill patients revealed an average phase angle of 4.2 ± 1.2, with mean intracellular water at 16.8 ± 2.9 L, average protein content, lean soft tissue, and fat-free mass were 7.3 ± 1.2 kg, 35.8 ± 6.1 kg, and 37.9 ± 6.4 kg, respectively. While males typically exhibited higher muscle mass, lean mass, and fluid volumes, females demonstrated a higher mean phase angle (p > 0.05). The findings suggest that achieving energy and protein targets per ESPEN guidelines by the 8th day is insufficient to counteract muscle wasting driven by complex catabolism in the critically ill. Therefore, monitoring BIA indices is vital to individualize nutritional support and optimize clinical management.

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References

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