Journal
CURRENT ONCOLOGY
Volume 25, Issue 3, Pages E193-E199Publisher
MULTIMED INC
DOI: 10.3747/co.25.3920
Keywords
Head-and-neck cancer; radiation therapy; bioimpedance analysis; phase angle; intracellular water; extracellular water; malnutrition
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Malnutrition is a frequent manifestation in patients with head-and-neck cancer undergoing radiation therapy and a major contributor to morbidity and mortality. Thus, body composition is an important component of an overall evaluation of nutrition in cancer patients. Malnutrition is characterized by weight loss, loss of muscle mass, changes in cell membrane integrity, and alterations in fluid balance. Bioelectrical impedance analysis is a method to analyze body composition and includes parameters such as intracellular water content, extracellular water content, and cell membrane integrity in the form of a phase angle (Phi). Bioelectrical impedance analysis has consistently been shown to have prognostic value with respect to mortality and morbidity in patients undergoing chemotherapy. The goal of the present study was to evaluate the relationship between Phi, time, intracellular water content, and weight for head-and-neck cancer patients undergoing radiotherapy. The results demonstrate that Phi decreases with time and increases with intracellular water content and weight.
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