Heart Rate Variability During Hemodialysis in Patients with Chronic Renal Disease

  • Sidney Benedito Silva
  • Vitor E Valenti
  • Fernando Adami
  • Elisa Rennó Dester
  • Fernando de Souza Almeida
  • Iara Gracia Lorena
  • David . M Garner
  • Rodrigo Daminello Raimundo Scientific Writing Laboratory, Faculty of Medicine of ABC, Santo Andre, SP, Brazil
  • Rayana L. Gomes
  • Ronaldo Roberto Bergamo
  • Tatiana Dias de Carvalho
  • Luiz Carlos de Abreu

Abstract

Background: Few studies evaluated cardiac autonomic responses induced by hemodialysis. We aimed to evaluate cardiac autonomic regulation during hemodialysis in haemodynamically stable patients with chronic renal disease. Method: Heart rate variability (HRV) was analyzed in the time and frequency domains in the following periods: Pre-dialysis (10 minutes before); Hemodialysis (240 minutes). Results: The standard deviation of all normal RR intervals (SDNN) increased 60-90min after hemodialysis compared to pre-hemodialysis (29.77 ± 12ms vs. 51.70 ± 41.6ms - p<0.05). The percentage of adjacent RR intervals with a difference of duration greater than 50ms (pNN50) also raised 180-210 min after hemodialysis compared to 0-30 min after hemodialysis (1.29 ± 3.5 vs. 4.37 ± 7.8 - p<0.05). Low frequency (LF) (ms2) increased 150-180 min after hemodialysis compared to pre-hemodialysis (168.2±179.8 ms2 vs. 562.6±455.7 ms2: p<0.05) and high frequency (HF) (ms2) band raised 150-180min and 180-210 after hemodialysis compared to pre-hemodialysis (59.3 ± 70.78ms2 vs. 212.5 ± 304.9 ms2 vs. 186.3 ± 335.1 ms2: p<0.05). Conclusion: Hemodialysis acutely increased HRV, raising the parasympathetic component of  HRV.

Published
May 10, 2015
How to Cite
SILVA, Sidney Benedito et al. Heart Rate Variability During Hemodialysis in Patients with Chronic Renal Disease. International Archives of Medicine, [S.l.], v. 8, may 2015. ISSN 1755-7682. Available at: <http://imed.pub/ojs/index.php/iam/article/view/1038>. Date accessed: 15 oct. 2018. doi: http://dx.doi.org/10.3823/1684.
Section
Cardiology

Keywords

Autonomic nervous system; Cardiovascular system; Physiology; Renal dialysis.

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