Abstract
Non-linear analyses of heart rate dynamics reveal subtle changes not evident from conventional heart rate variability measures. Traditionally, the information was inferred from 24-hour ECG recordings, making it less suitable for clinical application. Moreover, only few studies have attempted to evaluate the reliability of non-linear analyses in relation to varying proportion of artifacts in tracings. In 67 patients revascularized with beating-heart technique, fractal dimension and detrended fluctuation analyses were obtained from 24-hour Holter and 15-minute high-resolution ECG recordings pre and postoperatively. We found strong correlations of non-linear indices between 24-hour and 15-minute recordings (0.54-0.77, p<0.001), unaffected by proportion of artifacts.
References
Sep 1, 1993·Circulation·J T BiggerR C Steinman
Oct 7, 1997·The American Journal of Cardiology·T H MäkikallioH V Huikuri
Apr 6, 2000·The Annals of Thoracic Surgery·K V AromR J Petersen
Jun 14, 2000·Circulation·A L GoldbergerH E Stanley
Feb 24, 2001·Journal of Cardiovascular Electrophysiology·L Y LinS K Huang
Mar 29, 2001·The American Journal of Cardiology·J S PerkiömäkiA J Moss
Apr 13, 2001·Journal of the American College of Cardiology·T H MäkikallioR J Myerburg
Jan 1, 1995·Chaos·C K PengA L Goldberger
Oct 9, 2001·The American Journal of Cardiology·J S PerkiömäkiUNKNOWN IDEAL Investigators
Aug 6, 2002·The American Journal of Cardiology·Jari M TapanainenHeikki V Huikuri
Oct 15, 2003·The American Journal of Cardiology·Vesa JokinenHeikki V Huikuri
May 18, 2005·European Journal of Cardio-thoracic Surgery : Official Journal of the European Association for Cardio-thoracic Surgery·Ardawan Julian RastanFriedrich Wilhelm Mohr
Jun 29, 2005·European Journal of Cardio-thoracic Surgery : Official Journal of the European Association for Cardio-thoracic Surgery·Zhong-Kai WuMatti R Tarkka
Jul 6, 2005·Early Human Development·Akihiko KikuchiYuji Taketani
Sep 13, 2005·TheScientificWorldJournal·Mohammed Saeed
Dec 27, 2005·Circulation Journal : Official Journal of the Japanese Circulation Society·Dong-Gu ShinGeu-Ru Hong
Jun 7, 2006·The Heart Surgery Forum·Jurij M KalisnikBorut Gersak
Oct 26, 2006·Biomedizinische Technik. Biomedical Engineering·Pedro GomisGalen Wagner
Jan 24, 2007·Pacing and Clinical Electrophysiology : PACE·Robert BauernschmittRüdiger Lange
Jan 31, 2007·Computers in Biology and Medicine·Jurij-Matija KalisnikBorut Gersak
Feb 20, 2007·The Annals of Thoracic Surgery·George PalmerMichael J Mack
Mar 16, 2007·Computers in Biology and Medicine·Yalçin Işler, Mehmet Kuntalp
Jun 27, 2007·Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc·Goran KrstacicMirjana Jembrek-Gostovic
Jun 30, 2007·The Heart Surgery Forum·Jurij M KalisnikBorut Gersak