Decreased autonomic nervous system activity as assessed by heart rate variability in patients with chronic tetraplegia

Yen Ho Wang, Tien Shang Huang, Jiunn Lee Lin, Juey Jen Hwang, Hsiao Lung Chan, Jin Shin Lai, Yung Zu Tseng

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Objectives: To assess the alterations of autonomic nervous functions and sympathovagal balance of the subjects with spinal cord injuries (SCIs) in different levels by heart rate variability analysis. Design: Prospective, observational study. Setting: All participants were recruited from the outpatient clinic from National Taiwan University Hospital, which is a tertiary referral center. Participants: Thirty-one patients with traumatic chronic complete SCI (more than 6 months): 14 with paraplegia (Group A), and 17 with tetraplegia (Group B). Main Outcome Measures: Heart rate variability assessed by 24-hour Holter monitoring. Results: Two patients in Group A and 1 in Group B were excluded from final data analysis because of poor recording data. Two time domain variables, the standard deviation (SD) of all normal RR intervals (SDNN) and the mean of the SDs of all normal RR intervals for all 5-minute intervals (SDNNi), over 24 hours were decreased in Group B. All time domain variables, SDNN, SDNNi, root mean square of the successive normal RR interval difference (rMSSD), and the percentage of RR intervals differing >50msec from the preceding one (pNN50), were decreased during the nighttime recordings (all p < .05) in Group B. The very-low-frequency, low-frequency (LF), and high-frequency (HF) components of the power spectrum of the RR intervals were also decreased in Group B (p < .05), irrespective of the daytime and nighttime recordings. The LF-to-HF ratio did not differ significantly in these two groups, indicating the maintained sympathovagal balance in the chronic SCI patients. Conclusion: These findings suggested that the autonomic nervous system activity was depressed in the patients with chronic tetraplegia, but the autonomic nervous system still maintained homeostasis. (C) 2000 by the American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation.

Original languageEnglish
Pages (from-to)1181-1184
Number of pages4
JournalArchives of Physical Medicine and Rehabilitation
Volume81
Issue number9
DOIs
Publication statusPublished - Jan 1 2000
Externally publishedYes

Fingerprint

Quadriplegia
Autonomic Nervous System
Heart Rate
Spinal Cord Injuries
Ambulatory Electrocardiography
Paraplegia
Ambulatory Care Facilities
Taiwan
Tertiary Care Centers
Observational Studies
Homeostasis
Outcome Assessment (Health Care)
Prospective Studies

Keywords

  • Autonomic nervous system
  • Heart rate
  • Rehabilitation
  • Tetraplegia

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation

Cite this

Decreased autonomic nervous system activity as assessed by heart rate variability in patients with chronic tetraplegia. / Wang, Yen Ho; Huang, Tien Shang; Lin, Jiunn Lee; Hwang, Juey Jen; Chan, Hsiao Lung; Lai, Jin Shin; Tseng, Yung Zu.

In: Archives of Physical Medicine and Rehabilitation, Vol. 81, No. 9, 01.01.2000, p. 1181-1184.

Research output: Contribution to journalArticle

Wang, Yen Ho ; Huang, Tien Shang ; Lin, Jiunn Lee ; Hwang, Juey Jen ; Chan, Hsiao Lung ; Lai, Jin Shin ; Tseng, Yung Zu. / Decreased autonomic nervous system activity as assessed by heart rate variability in patients with chronic tetraplegia. In: Archives of Physical Medicine and Rehabilitation. 2000 ; Vol. 81, No. 9. pp. 1181-1184.
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AU - Huang, Tien Shang

AU - Lin, Jiunn Lee

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AU - Chan, Hsiao Lung

AU - Lai, Jin Shin

AU - Tseng, Yung Zu

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