The Effect of Mechanically-Generated Vibrations on the Efficacy of Hemodialysis; Assessment of Patients’ Safety: Preliminary Reports

Beata Hornik, Jan Duława, Czesław Marcisz, Wojciech Korchut and Jacek Durmała
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Beata Hornik: Department of Internal Nursing, School of Health Sciences in Katowice, Medical University of Silesia, 40-752 Katowice, Poland
Jan Duława: Department of Internal Medicine and Metabolic Diseases, School of Health Sciences in Katowice, Medical University of Silesia, 40-752 Katowice, Poland
Czesław Marcisz: Department of Gerontology and Geriatric Nursing, School of Health Sciences in Katowice, Medical University of Silesia, 40-752 Katowice, Poland
Wojciech Korchut: University of Social Sciences and Humanities, 40-326 Katowice, Poland
Jacek Durmała: Department of Rehabilitation, School of Health Sciences in Katowice, Medical University of Silesia, 40-752 Katowice, Poland

IJERPH, 2019, vol. 16, issue 4, 1-11

Abstract: Muscle activity during a hemodialysis procedure improves its efficacy. We have formulated a hypothesis that vibrations generated by a specially-designed dialysis chair can, the same as physical exercise, affect the filtering of various fluids between fluid spaces during the hemodialysis procedure. This prospective and interventional study included 21 dialyzed patients. During a single dialysis session, each patient used a prototype device with the working name “vibrating chair”. The chair’s drive used a low-power cage induction motor, which, along with the worm gear motor, was a part of the low-frequency (3.14 Hz) vibration-generating assembly with an amplitude of 4 mm. Tests and measurements were performed before and after the vibration dialysis. After a single hemodialysis session including five 3-min cycles of vibrations, an increase in K t / V in relation to non-vibration K t / V ( 1.53 ± 0.26 vs. 1.62 ± 0.23 ) was seen. Urea reduction ratio increased significantly ( 0.73 ± 0.03 vs. 0.75 ± 0.03 ). A significant increase in systolic blood pressure was observed between the first and the third measurement ( 146 ± 18 vs. 156 ± 24 ). The use of a chair generating low-frequency vibrations increased dialysis adequacy; furthermore, it seems an acceptable and safe alternative to intradialytic exercise.

Keywords: hemodialysis; vibrations; physical activity; Kt / V; urea reduction ratio (URR) (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
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