Heart rate turbulence after ventricular and atrial premature beats in subjects without structural heart disease.
INTRODUCTION: Studies assessing heart rate (HR) behavior after premature beats have focused on HR responses to ventricular premature beats (VBPs), but there is less information of HR behavior after atrial premature beats (APBs). METHODS AND RESULTS: HR turbulence after VPBs and APBs was first measur...
| Publicado en: | Journal of Cardiovascular Electrophysiology Vol. 14; no. 5; pp. 447 - 453 |
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| Autores principales: | , , , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Wiley-Blackwell
May2003
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=106691858&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 106691858 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10453873 GSB jtl: Journal of Cardiovascular Electrophysiology issn: 10453873 maglogo: Y pubinfo: dt: May2003 vid: 14 iid: 5 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 106691858 2004016937 10.1046/j.1540-8167.2003.02552.x NLM12776856 106691858 ppf: 447 ppct: 6 formats: fmt: @attributes: type: P tig: atl: Heart rate turbulence after ventricular and atrial premature beats in subjects without structural heart disease. aug: au: Lindgren KS Mäkikallio TH Seppänen T Raatikainen MJP Castellanos A Myerburg RJ Huikuri HV affil: Division of Cardiology, Department of Medicine, University of Oulu, Hospital, Oulu, Finland sug: subj: Heart Rate Physiology Premature Atrial Contractions Physiopathology Premature Ventricular Contractions Physiopathology Adult Descriptive Statistics Electrocardiography, Ambulatory Electrophysiology Female Funding Source Male Middle Age Pearson's Correlation Coefficient Spearman's Rank Correlation Coefficient T-Tests Human Adult: 19-44 years Middle Aged: 45-64 years Female Male ab: INTRODUCTION: Studies assessing heart rate (HR) behavior after premature beats have focused on HR responses to ventricular premature beats (VBPs), but there is less information of HR behavior after atrial premature beats (APBs). METHODS AND RESULTS: HR turbulence after VPBs and APBs was first measured in response to ambient APBs and VPBs occurring during 24-hour ambulatory ECG recordings in 29 subjects without structural heart disease, and in response to programmed atrial (AE) and ventricular extrastimuli (VE) in 6 subjects undergoing electrophysiologic (EP) examination. Turbulence onset (TO) was more negative (-2.3 +/- 3.2% vs -0.9 +/- 2.8%, P < 0.01) and turbulence slope (TS) was steeper (11 +/- 11 vs 5.1 +/- 4.1 msec/R-R interval, P < 0.05) after VPBs than APBs. Compared to VPBs, the acceleration of HR after APBs was delayed by one beat, and APBs were associated with a short R-R interval preceding the APB, resulting in a blunted TO. Studies of patients undergoing an EP test confirmed the one-beat delay of HR acceleration and the blunted TO after programmed AE compared to VE (P < 0.05). TO and TS after VPBs were related to baroreflex sensitivity. TO also was related to 24-hour standard deviation of N-N intervals (SDNN). However, the TO or TS following APBs was not related to either SDNN or baroreflex sensitivity. CONCLUSION: HR behavior is different in response to APBs and VBPs among subjects without structural heart disease. Different definitions and calculation formulas should be used in the analysis of HR turbulence after APBs and VPBs. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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