PMID: 9170135May 1, 1997Paper

Autonomic nervous system activity during tilt testing in syncopal patients, estimated by power spectral analysis of heart rate variability

Pacing and Clinical Electrophysiology : PACE
G E KochiadakisP E Vardas

Abstract

Spectral analysis of heart rate variability (HRV) was used to assess changes in autonomic function before and during postural tilt in 28 syncopal patients: 14 (group A) with positive and 14 (group B) with negative tilting test, and 14 normal controls (group C). Frequency-domain measurements of the high (HF) and low (LF) frequency bands and the ratio LF/HF were derived from Holter recordings, computed by Fast Fourier analysis for 4-minute intervals immediately before tilt testing, immediately after tilting, and just before the end of the test. In group A, the mean values of LF and HF decreased slightly in response to tilting while the LF/HF ratio increased, though these changes were not statistically significant. All parameters showed a statistically significant increase just before the onset of syncope. In group B, there were no significant changes in the parameters measured throughout the test. In group C, there was an increase in the LF and LF/HF ratio and a decrease in the HF immediately after tilting. There were no further significant changes in any of the parameters during the test. Syncopal patients have a different pattern of response to the orthostatic stimulus, in that they do not show the increase in sympathetic tone ...Continue Reading

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Citations

Jun 8, 2011·Journal of Interventional Cardiac Electrophysiology : an International Journal of Arrhythmias and Pacing·Phang Boon LimPrapa Kanagaratnam
Sep 15, 2009·Age and Ageing·Steve W ParryJulia L Newton
Dec 1, 2001·The American Journal of Cardiology·J NiñoC A Morillo
May 2, 2008·Medical & Biological Engineering & Computing·David S LiuChien-Hung Lai
May 19, 2005·Revista española de cardiología·Arcadi García AlberolaMariano Valdés
Aug 21, 2014·Pacing and Clinical Electrophysiology : PACE·Tetsuji ShinoharaNaohiko Takahashi
May 26, 2009·NeuroImage·Felix D C C BeacherHugo D Critchley
Oct 24, 2007·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Nathalie ViragMark Erickson
Apr 25, 2003·Pacing and Clinical Electrophysiology : PACE·Jaw-Wen ChenMau-Song Chang
Feb 24, 2001·Pacing and Clinical Electrophysiology : PACE·M SumiyoshiH Yamaguchi
Nov 24, 1998·Pacing and Clinical Electrophysiology : PACE·W GrimmB Maisch
Nov 3, 2005·The Journal of Clinical Endocrinology and Metabolism·Eugenia ResminiFrancesco Minuto
Jul 8, 2008·Biomedizinische Technik. Biomedical Engineering·Christoph MaierHartmut Dickhaus
Mar 27, 2012·Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology·George KochiadakisPanos Vardas
Aug 7, 2019·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·J Antonio González-HermosilloClaudia Lerma
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Sep 23, 2021·Kardiologiia·Sinan Akıncıİbrahim Haldun Müderrisoğlu

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