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Effect of electrophysiologic character of ventricular premature beat on heart rate turbulence

Authors :
Kun-Tai Lee
Wen-Ter Lai
Chin-Sheng Chu
Wen-Choi Voon
Sheng-Hsiung Sheu
Hsueh-Wei Yen
Source :
Journal of Electrocardiology. 37:41-46
Publication Year :
2004
Publisher :
Elsevier BV, 2004.

Abstract

Heart rate turbulence (HRT) has been described as a predictor of high-risk patients with cardiac diseases. The purpose of this study is to determine how the degree of prematurity of a ventricular premature beat (VPB%) and retrograde ventriculoatrial (VA) conduction of VPBs affect HRT. We studied 30 patients without organic heart disease. We calculated turbulent slope (TS) and turbulent onset (TO) from VPBs induced by programmed stimulation from the right ventricular apex. TS was inversely and TO was positively correlated to VPB%. Without retrograde VA conduction of VPBs, TS was inversely and TO was positively correlated to VPB%. In VPBs with retrograde VA conduction, there were no significant correlations between TO and TS with VPB%. In conclusion, TS and TO calculated from VPBs with different degrees of prematurity varied widely. Both VPB% and characteristics of retrograde VA conduction may affect HRT.

Details

ISSN :
00220736
Volume :
37
Database :
OpenAIRE
Journal :
Journal of Electrocardiology
Accession number :
edsair.doi.dedup.....f79eb796a0388032288b107d00b0e991
Full Text :
https://doi.org/10.1016/j.jelectrocard.2003.10.006