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Current Oncology
Volume 23
Issue 5
10.3747/co.23.3181
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Current Oncology is published by MDPI from Volume 28 Issue 1 (2021). Previous articles were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence, and they are hosted by MDPI on mdpi.com as a courtesy and upon agreement with Multimed Inc..
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Article

Bioelectrical Impedance Phase Angle as a Prognostic Indicator of Survival in Head-and-Neck Cancer

by
M.S. Władysiuk
1,*,
R. Mlak
2,
K. Morshed
3,
W. Surtel
4,
A. Brzozowska
5 and
T. Małecka-Massalska
2
1
HTA Consulting, Cracow, Krakow, Poland
2
Human Physiology Department, PL-20080 Lublin, Poland
3
Epidemiology Department, Medical University of Lublin, Lublin, Poland
4
Electronics Department, Lublin University of Technology, Lublin, Poland
5
Oncology Department, Medical University of Lublin, Lublin, Poland
*
Author to whom correspondence should be addressed.
Curr. Oncol. 2016, 23(5), 481-487; https://doi.org/10.3747/co.23.3181
Submission received: 6 July 2016 / Revised: 9 August 2016 / Accepted: 11 September 2016 / Published: 1 October 2016

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, p = 0.0489; chi-square: 3.88; hazard ratio: 1.8856; 95% confidence interval: 1.0031 to 3.5446). 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; phase angle; bioelectrical impedance analysis; survival; prognostic factors head-and-neck cancer; phase angle; bioelectrical impedance analysis; survival; prognostic factors

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MDPI and ACS Style

Władysiuk, M.S.; 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, 23, 481-487. https://doi.org/10.3747/co.23.3181

AMA Style

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. Current Oncology. 2016; 23(5):481-487. https://doi.org/10.3747/co.23.3181

Chicago/Turabian Style

Władysiuk, M.S., R. Mlak, K. Morshed, W. Surtel, A. Brzozowska, and T. Małecka-Massalska. 2016. "Bioelectrical Impedance Phase Angle as a Prognostic Indicator of Survival in Head-and-Neck Cancer" Current Oncology 23, no. 5: 481-487. https://doi.org/10.3747/co.23.3181

APA Style

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, 23(5), 481-487. https://doi.org/10.3747/co.23.3181

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