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Władysiuk MS, Mlak R, Morshed K, et al. Bioelectrical impedance phase angle as a prognostic indicator of survival in head-and-neck cancer. Curr Oncol. 2016;23(5):e481-e487doi: 10.3747/co.23.3181.
Władysiuk, M. S., Mlak, R., Morshed, K., Surtel, W., Brzozowska, A., & Małecka-Massalska, T. (2016). Bioelectrical impedance phase angle as a prognostic indicator of survival in head-and-neck cancer. Current oncology (Toronto, Ont.), 23(5), e481-e487. https://doi.org/10.3747/co.23.3181
Władysiuk, M S, et al. "Bioelectrical impedance phase angle as a prognostic indicator of survival in head-and-neck cancer." Current oncology (Toronto, Ont.) vol. 23,5 (2016): e481-e487. doi: https://doi.org/10.3747/co.23.3181
Władysiuk MS, Mlak R, Morshed K, Surtel W, Brzozowska A, Małecka-Massalska T. Bioelectrical impedance phase angle as a prognostic indicator of survival in head-and-neck cancer. Curr Oncol. 2016 Oct;23(5):e481-e487. doi: 10.3747/co.23.3181. Epub 2016 Oct 25. PMID: 27803609; PMCID: PMC5081021.
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Curr Oncol. 2016 Oct;23(5):e481-e487. doi: 10.3747/co.23.3181. Epub 2016 Oct 25.

Bioelectrical impedance phase angle as a prognostic indicator of survival in head-and-neck cancer.

Current oncology (Toronto, Ont.)

M S Władysiuk, R Mlak, K Morshed, W Surtel, A Brzozowska, T Małecka-Massalska

Affiliations

  1. HTA Consulting, Cracow, Medical University of Lublin, Lublin, Poland.
  2. Human Physiology Department, Medical University of Lublin, Lublin, Poland.
  3. Epidemiology Department, Medical University of Lublin, Poland.
  4. Electronics Department, Lublin University of Technology, Lublin, Poland.
  5. Oncology Department, Medical University of Lublin, Lublin, Poland.

PMID: 27803609 PMCID: PMC5081021 DOI: 10.3747/co.23.3181

Abstract

BACKGROUND: Phase angle could be an alternative to subjective global assessment for the assessment of nutrition status in patients with head-and-neck cancer.

METHODS: We prospectively evaluated a cohort of 75 stage iiib and iv head-and-neck patients treated at the Otolaryngology Department, Head and Neck Surgery, Medical University of Lublin, Poland. Bioelectrical impedance analysis was performed in all patients using an analyzer that operated at 50 kHz. The phase angle was calculated as reactance divided by resistance (Xc/R) and expressed in degrees. The Kaplan-Meier method was used to calculate survival.

RESULTS: Median overall survival in the cohort was 32.0 months. At the time of analysis, 47 deaths had been recorded in the cohort (62.7%). The risk of shortened overall survival was significantly higher in patients whose phase angle was less than 4.733 degrees than in the remaining patients (19.6 months vs. 45 months,

CONCLUSIONS: Phase angle might be prognostic of survival in patients with advanced head-and-neck cancer. Further investigation in a larger population is required to confirm our results.

Keywords: Head-and-neck cancer; bioelectrical impedance analysis; phase angle; prognostic factors; survival

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