CJA
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
This Article
Right arrow Full Text (PDF)
Right arrow Submit a scholarly reply
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Arakawa, M.
Right arrow Articles by Goto, F.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Arakawa, M.
Right arrow Articles by Goto, F.

Canadian Journal of Anesthesia, Vol 41, 680-687, Copyright © 1994 by Canadian Anesthesiologists' Society

ARTICLES

Power spectral analysis of heart rate and blood pressure variability in lumbar epidural anaesthesia

M Arakawa and F Goto
Department of Anesthesiology, Kitasato University School of Medicine, Kanagawa, Japan.

The purpose of this study was to evaluate autonomic nervous system activity during high and low lumbar epidural anaesthesia. Ten patients undergoing lower limb surgery with lumbar epidural anaesthesia (low epidural anaesthesia group; mean upper dermal block level, T10.7 +/- 1.1), and ten patients undergoing either abdominal total hysterectomy or inguinal hernia under lumbar epidural anaesthesia (high epidural anaesthesia group; mean upper dermal block level, T5.1 +/- 1.0). Ten healthy volunteers were used as the control group. The autonomic nervous system activity was measured by heart rate and blood pressure variability with power spectral analysis. For the analysis of heart rate variability, frequency components were divided into two factors, a low frequency component RR (LFCRR: 0.03 Hz-0.15 Hz) that mediated sympathetic and parasympathetic activity and a high frequency component RR (HFCRR: 0.15 Hz-0.4 Hz) that mediated parasympathetic activity. In the analysis of blood pressure variability, the frequency components were also divided into two factors; a low frequency component of systolic blood pressure and diastolic blood pressure (LFCSBP and LFCDBP: 0.03 Hz-0.15 Hz) that was mediated by peripheral sympathetic vasomotor activity and a higher frequency component of systolic blood pressure and diastolic blood pressure (HFCSBP and HFCDBP: 0.15 Hz-0.4 Hz) that was mediated by a mechanical consequence of respiration. There were no changes in heart rate variability during epidural anaesthesia. However, LFCSBP and LFCDBP decreased in high epidural anaesthesia (P < 0.01). On the contrary, LFCSBP increased in low epidural anaesthesia (P < 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)


This article has been cited by other articles:


Home page
 Canadian J. AnesthesiaHome page
A. Deschamps, I. Kaufman, A. Geist, S. S.B. Backman, and K. Loo
Heart rate and blood pressure variability as markers of sensory blockade with labour epidural analgesia: [La variabilite de la frequence cardiaque et de la tension arterielle comme indicateurs du bloc sensitif lors de l'analgesie peridurale pour le travail obstetrical]
Can J Anesth, March 1, 2007; 54(3): 183 - 189.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1994 by the Canadian Anesthesiologists' Society.