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.
Methods and 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.
heart rate turbulence, sudden cardiac death, good left ventricle function