Title :
Detection of autonomic modulation in atrial cycle length during atrial fibrillation
Author :
Stridh, M. ; Meurling, CJ ; Waktare, J. ; Olsson, SB ; Sörnmo, L.
Author_Institution :
Lund Univ., Sweden
Abstract :
A new method for estimation of changes in the atrial cycle length during atrial fibrillation is presented. We investigate whether or not respiration, through the autonomic nervous system, modulates the atrial cycle length in patients with permanent atrial fibrillation. Eight patients with permanent atrial fibrillation, AV (arteriovenous) block III and a permanent pacemaker were studied during rest, rhythm-controlled respiration at a rate of 0.125 Hz and rhythm-controlled respiration after full vagal blockade using atropine. Using the new method, it was possible to detect a prominent spectral peak at 0.125 Hz during rhythm-controlled respiration in two of the eight patients; the spectral peaks disappeared after full vagal blockade
Keywords :
electrocardiography; modulation; neurophysiology; pacemakers; pneumodynamics; 0.125 Hz; AV block III; arteriovenous block III; atrial cycle length change estimation; atrial fibrillation; atropine; autonomic modulation detection; autonomic nervous system; full vagal blockade; pacemaker; rhythm-controlled respiration; spectral peak; Atrial fibrillation; Autonomic nervous system; Cardiology; Frequency conversion; Frequency estimation; Frequency modulation; Pacemakers; Rhythm; Spectral analysis; Time frequency analysis;
Conference_Titel :
Computers in Cardiology 2001
Conference_Location :
Rotterdam
Print_ISBN :
0-7803-7266-2
DOI :
10.1109/CIC.2001.977628
