Time-domain and morphological analysis of the P-wave. Part I: technical aspects for automatic quantification of P-wave features.
INTRODUCTION: Time-domain and morphological analysis of P-wave from surface electrocardiogram has been extensively used to identify patients prone to atrial arrhythmias, especially atrial fibrillation (AF). However, since no standard procedure exists for P-wave preprocessing, standardization of cut-...
| Published in: | Pacing & Clinical Electrophysiology Vol. 31; no. 7; pp. 874 - 884 |
|---|---|
| Main Authors: | , , , , , , |
| Format: | algorithm equations & formulas research tracings Journal Article |
| Published: |
Wiley-Blackwell
Jul2008
|
| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105548958&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105548958 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01478389 4F8 jtl: Pacing & Clinical Electrophysiology issn: 01478389 maglogo: Y pubinfo: dt: Jul2008 vid: 31 iid: 7 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 105548958 2010002371 10.1111/j.1540-8159.2008.01102.x NLM18684285 105548958 ppf: 874 ppct: 10 formats: fmt: @attributes: type: P tig: atl: Time-domain and morphological analysis of the P-wave. Part I: technical aspects for automatic quantification of P-wave features. aug: au: Censi F Ricci C Calcagnini G Triventi M Ricci RP Santini M Bartolini P affil: Department of Technologies and Health, Istituto Superiore di Sanità, Rome, Italy. federica.censi@iss.it sug: subj: Electrocardiography Methods Atrial Fibrillation Diagnosis Electrophysiology Human ab: INTRODUCTION: Time-domain and morphological analysis of P-wave from surface electrocardiogram has been extensively used to identify patients prone to atrial arrhythmias, especially atrial fibrillation (AF). However, since no standard procedure exists for P-wave preprocessing, standardization of cut-off values for P-wave duration and morphological features is difficult. This study is a methodological investigation of P-wave preprocessing procedures for automatic time-domain and morphological analysis. METHODS: We compared, on simulated and real data, the P-wave template obtained applying three alignment algorithms with that obtained without alignment, in terms of template error, shift error, P-wave duration, and morphological parameters. We also proposed automatic algorithms for estimation of P-wave duration. RESULTS: We found that alignment is necessary for a reliable extraction of P-wave template by the averaging procedure, in order to perform time-domain and morphological analysis. On simulated and real data, the error on P-wave duration can be as high as 30 ms on a template obtained without alignment; if alignment procedure is performed, the error on P-wave duration is negligible. Analogously, morphological features are correctly estimated only on a P-wave template obtained with P-waves alignment. We also found that the proposed algorithm for the automatic estimation of the P-wave duration gave reliable results. pubtype: Academic Journal doctype: algorithm equations & formulas research tracings Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|