| Automated Analysis of the 12 -Lead Electrocardiogram to Identify the Exit Site of Post-Infarction Ventricular Tachycardia. | |
| | |
MedLine Citation:
|
PMID: 22001707 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
BACKGROUND: The value of the 12-lead ECG to identify the exit site of post-infarction ventricular tachycardia (VT) has been questioned. The purpose of this study was to assess the accuracy of a computerized algorithm for identifying a VT exit site based on the 12-lead ECG. METHODS AND RESULTS: In 34 post-infarction patients, pace-mapping was performed from within scar tissue. A computerized algorithm that used a supervised learning method (support vector machine) received the digitized pace-map morphologies combined with the pacing sites as training data. No other information (i.e. infarct localization, bundle branch block morphology, axis or R wave pattern) was used in the algorithm. The training data were validated in 58 VTs in 33 patients. Only the pace-map and/or VT morphologies were used in this algorithm. The sizes of 10 different anatomic sections within the heart were determined using the pace-maps as the determining factor. Accuracy was found to be 69% for pace-maps and when 2 adjacent regions were combined, accuracy improved to 88%. Validation of the data in 33 patients showed an accuracy of 71% for localizing a VT exit site to one of the 10 regions within the left ventricle. If combined with the best adjacent region, accuracy improved to 88%. The median anatomic size of each section was 21 cm(2). The median spatial resolution of the 12-lead ECG pattern of the pace-maps for a particular region was 15 cm(2). CONCLUSION: The 12 lead ECG of post-infarction VT contains localizing information that enables determination of a region of interest in the 10-20 cm(2) range for more than 70% of VT exit sites in a given sector. |
| | |
Authors:
|
Miki Yokokawa; Tzu-Yu Liu; Kentaro Yoshida; Clayton Scott; Alfred Hero; Eric Good; Fred Morady; Frank Bogun |
Related Documents
:
|
3042637 - Body temperature in acute myocardial infarction and its relation to early intervention ... 22449737 - Refractory inappropriate sinus tachycardia successfully treated with radiofrequency abl... 22555577 - Differences in ct perfusion summary maps for patients with acute ischemic stroke genera... 23704857 - Single-site access robot-assisted epicardial mapping with a snake robot: preparation an... 1513227 - Lethal cardiac tamponade due to aortotomy wound dehiscence after cardiac valve replacem... 15851737 - Simultaneous carotid endarterectomy and coronary artery bypass surgery in canada. |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-10-11 |
Journal Detail:
|
Title: Heart rhythm : the official journal of the Heart Rhythm Society Volume: - ISSN: 1556-3871 ISO Abbreviation: - Publication Date: 2011 Oct |
Date Detail:
|
Created Date: 2011-10-17 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101200317 Medline TA: Heart Rhythm Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
|
Copyright © 2011. Published by Elsevier Inc. |
Affiliation:
|
Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, MI. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: On the estimation of T-wave alternans using the spectral fast fourier transform method.
Next Document: Evaluation of a new standardized protocol for the perioperative management of chronically anticoagul...