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

Journal
Archives of Physical Medicine and Rehabilitation
Journal Volume
81
Journal Issue
9
Pages
1181-1184
Date Issued
2000
Author(s)
Wang Y.-H.
TIEN-SHANG HUANG  
JIUNN-LEE LIN  
HWANG, JUEY-JEN  
Chan H.-L.
Lai J.-S.
Tseng Y.-Z.
DOI
10.1053/apmr.2000.6300
URI
https://www.scopus.com/inward/record.uri?eid=2-s2.0-0033848183&doi=10.1053%2fapmr.2000.6300&partnerID=40&md5=7061778d6ef61e14b8a93ead44cf3fee
https://scholars.lib.ntu.edu.tw/handle/123456789/496852
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.
SDGs

[SDGs]SDG3

Other Subjects
adrenergic stimulation; adult; article; autonomic nervous system function; clinical article; controlled study; disability; female; heart rate variability; Holter monitoring; human; male; paraplegia; quadriplegia; RR interval; spinal cord injury; spinal cord lesion; sympathetic function
Publisher
W.B. Saunders
Type
journal article

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