| Automatic p wave analysis over 24 hours in patients with paroxysmal or persistent atrial fibrillation. | |
| | |
MedLine Citation:
|
PMID: 17970956 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
BACKGROUND: Patients with atrial fibrillation (AF) often exhibit abnormalities of P wave morphology during sinus rhythm. We examined a novel method for automatic P wave analysis in the 24-hour-Holter-ECG of 60 patients with paroxysmal or persistent AF and 12 healthy subjects. METHODS: Recorded ECG signals were transferred to the analysis program where 5-10 P and R waves were manually marked. A wavelet transform performed a time-frequency decomposition to train neural networks. Afterwards, the detected P waves were described using a Gauss function optimized to fit the individual morphology and providing amplitude and duration at half P wave height. RESULTS: >96% of P waves were detected, 47.4 +/- 20.7% successfully analyzed afterwards. In the patient population, the mean amplitude was 0.073 +/- 0.028 mV (mean variance 0.020 +/- 0.008 mV(2)), the mean duration at half height 23.5 +/- 2.7 ms (mean variance 4.2 +/- 1.6 ms(2)). In the control group, the mean amplitude (0.105 +/- 0.020 ms) was significantly higher (P < 0.0005), the mean variance of duration at half height (2.9 +/- 0.6 ms(2)) significantly lower (P < 0.0085). CONCLUSIONS: This method shows promise for identification of triggering factors of AF. |
| | |
Authors:
|
Alexander Bitzen; Karsten Sternickel; Thorsten Lewalter; Jörg Otto Schwab; Alexander Yang; Jan Wilko Schrickel; Markus Linhart; Christian Wolpert; Werner Jung; Peter David; Berndt Lüderitz; Georg Nickenig; Lars Lickfett |
Related Documents
:
|
7245436 - Significance of primary t wave aberrations in the electrocardiogram of asymptomatic you... 20934826 - Electrocardiogram and echocardiogram findings in runners completing a half marathon. 18544876 - Innovative instrumental analysis of heartbeat signals and its clinical application. 23302596 - Blood rheology effect of submaximal exercise on young subjects. 1973636 - Neuromuscular and cardiovascular effects of pipecuronium. 12172876 - Effects of a low carbohydrate diet and graded exercise during the follicular and luteal... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc Volume: 12 ISSN: 1082-720X ISO Abbreviation: Ann Noninvasive Electrocardiol Publication Date: 2007 Oct |
Date Detail:
|
Created Date: 2007-10-31 Completed Date: 2008-01-24 Revised Date: 2008-03-10 |
Medline Journal Info:
|
Nlm Unique ID: 9607443 Medline TA: Ann Noninvasive Electrocardiol Country: United States |
Other Details:
|
Languages: eng Pagination: 306-15 Citation Subset: IM |
Affiliation:
|
Department of Medicine--Cardiology, University of Bonn, Bonn, Germany. alexander.bitzen@ukb.uni-bonn.de |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Atrial Fibrillation
/
physiopathology* Case-Control Studies Electrocardiography, Ambulatory* Female Humans Male Middle Aged Signal Processing, Computer-Assisted Statistics, Nonparametric Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Detection of proximal coronary occlusion in acute coronary syndrome: a feasibility study using compu...
Next Document: Acoustic cardiography augments prolonged QRS duration for detecting left ventricular dysfunction.