title: [Analysis of circadian rhythm influence to heart rate turbulence in patients post myocardial infarction with left ventricular dysfunction].
abstract: BACKGROUND
  Some study reported circadian occurence of sudden cardiac death, ventricle ectopic activity, acute coronary syndromes and heart rate variability. Heart rate turbulence (HRT) is one of a new markers of noninvasive stratification of sudden cardiac death.
  
  
  RESULTS
  We have evaluated HRT in 120 consecutive patiens post myocardial infarction in mean age 62.7+/-12.4 years (90 M, 30 W), indicated for ecg Holter monitoring with LVEF 0.45+/-0.12 in 2hours interval during 24 hours. We have analysed circadian variation of the HRT.
  
  
  CONCLUSIONS
  The statistically significant circadian patterns were found in turbulence slope parameter of HRT. No significant changes for turbulence onset parameter were described.
authors.affiliation: Interní kardiologická klinika FN, Brno. msepsi@fnbrno.cz
authors.forename: M
authors.initials: M
authors.lastname: Sepsi
authors.forename: M
authors.initials: M
authors.lastname: Kozák
authors.forename: P
authors.initials: P
authors.lastname: Trcka
authors.forename: L
authors.initials: L
authors.lastname: Krivan
authors.forename: J
authors.initials: J
authors.lastname: Vlasínová
authors.forename: M
authors.initials: M
authors.lastname: Kýr
mesh_terms: D002940:Circadian Rhythm; D016757:Death, Sudden, Cardiac; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications / Q000503:physiopathology*; D013318:Stroke Volume; D018487:Ventricular Dysfunction, Left / Q000150:complications / Q000503:physiopathology*