Abstract
The aim of this study was to examine whether the indexes of heart rate variability (HRV) are stable from day-to-day in patients with vasovagal syncope and whether the stability of the HRV indexes is linked with that of the clinical results of the tilt test. Nineteen patients with a history of syncopal episodes and a positive tilt test underwent a second test 1 week later. Of these, 11 (group P-P) also had a positive second test, whereas 8 (group P-N) had a negative second test. Fifteen healthy volunteers served as a control group. Five time domain indexes were derived: the mean of all coupling intervals between normal beats (mean NN), the SD about the mean of all coupling intervals between normal beats (SDNN), the mean of all 5-minute standard deviations of NNs (SD), the proportion of adjacent normal RR intervals differing by >50 ms (pNN50), the root-mean-square of the difference between successive RRs (rMSSD) and the standard deviations of 5-minute mean NN intervals (SDANN). The control group showed good reproducibility of all HRV indexes (slope 0.86 to 0.97). The syncopal patients taken as a whole had significantly less reproducibility than the controls in the pNN50 parameter. This difference was due entirely to the patients ...Continue Reading
References
Oct 1, 1992·Pacing and Clinical Electrophysiology : PACE·B P GrubbL Elliott
Sep 11, 1992·The American Journal of Cardiology·F A FishD W Benson
Mar 25, 1992·The American Journal of Cardiology·J T BiggerR C Steinman
Mar 15, 1992·The American Journal of Cardiology·X C ChenD G Benditt
Apr 11, 1992·The American Journal of Cardiology·J T BiggerJ N Rottman
Apr 1, 1992·The American Journal of Cardiology·B P GrubbL Elliot
May 15, 1992·The American Journal of Cardiology·R SheldonS Killam
Dec 15, 1991·The American Journal of Cardiology·D Van HoogenhuyzeD H Singer
Sep 1, 1991·The American Journal of Cardiology·R E KleigerJ L Fleiss
Jan 1, 1991·Journal of the American College of Cardiology·A P FitzpatrickR Sutton
Jun 1, 1990·Circulation·L A LipsitzA L Goldberger
Aug 1, 1986·Circulation Research·M PaganiE Piccaluga
Feb 9, 1989·The New England Journal of Medicine·A AlmquistD G Benditt
Jan 1, 1986·British Heart Journal·C J McLaranS C Hammill
Nov 1, 1982·Journal of the Autonomic Nervous System·B G Wallin, G Sundlöf
Nov 1, 1994·Pacing and Clinical Electrophysiology : PACE·E PruvotL Kappenberger
Dec 15, 1994·The American Journal of Cardiology·C A MorilloR Yee
Nov 1, 1994·The American Journal of Cardiology·L A FreedP Kligfield
Dec 1, 1993·The American Journal of Cardiology·J F SneddonM Malik
Jan 1, 1994·The American Journal of Cardiology·J S SraM Akhtar
Jan 1, 1994·British Heart Journal·A MallianiM Pagani
Apr 1, 1993·Journal of the American College of Cardiology·J F SneddonA J Camm
Nov 1, 1995·Pacing and Clinical Electrophysiology : PACE·M KamaleshR Nesto
Citations
Mar 19, 2014·Journal of Electrocardiology·Jessie P BakkerAtul Malhotra
Jun 11, 1999·Clinical Physiology·T M SaloI Kantola
Mar 28, 2003·International Journal of Cardiology·Dursun AlehanSencan Ozme
May 14, 2008·International Heart Journal·Kyoung Bok MinMia Son
Jun 17, 1999·Japanese Heart Journal·M SumiyoshiY Nakata
Aug 30, 2003·Psychophysiology·Mary H BurlesonJohn T Cacioppo
Apr 6, 1999·The American Journal of Cardiology·A LagiC Tamburini
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
Oct 16, 1999·The Journal of Clinical Endocrinology and Metabolism·B M SchmidtM Wehling
Feb 3, 2005·Blood Pressure Monitoring·Michael V HøjgaardJørgen K Kanters