Abstract：
AIM:The aim of this study was to investigate whether interventricular asynchrony (IVA) can be measured by electrocardiography. METHODS:Sixty-two patients (New York Heart Association heart failure functional class III: age, mean +/- SD: 64 +/- 9 years; ejection fraction, mean +/- SD: 24% +/- 8%; dilative cardiomyopathy/ischemic cardiomyopathy, n = 39/23) with left bundle branch block (QRS duration, mean +/- SD: 165 +/- 21 milliseconds) underwent a 120-channel body surface mapping. QRS integral was analyzed and compared with IVA (echo). RESULTS:Interventricular asynchrony was associated with significantly decreased QRS integrals 15 cm cranial and 6 cm lateral from V1 in patients with normal axis (n = 36): At a cutoff value of -26 milliseconds mV, receiver operating characteristic analysis to predict IVA revealed a sensitivity of 89% and a specificity of 83% (area under curve, mean +/- SEM: 0.9 +/- 0.07; P < .001). In patients with left axis deviation (n = 26), IVA showed significantly decreased QRS integrals 10 cm caudal from V1: at a cutoff value of -89 milliseconds mV, receiver operating characteristic analysis to predict IVA revealed a sensitivity of 83% and a specificity of 100% (area under curve, mean +/- SEM: 0.9 +/- 0.07; P < .002). CONCLUSIONS:Interventricular asynchrony strongly correlates with QRS integral. Key lead positions, however, are axis dependent and outside standard leads.
journal_name
J Electrocardioljournal_title
Journal of electrocardiologyauthors
Samol A,Klotz S,Stypmann J,Bruns HJ,Houben R,Paul M,Vahlhaus Cdoi
10.1016/j.jelectrocard.2009.12.006subject
Has Abstractpub_date
2010-05-01 00:00:00pages
242-50issue
3eissn
0022-0736issn
1532-8430pii
S0022-0736(09)00625-6journal_volume
43pub_type
杂志文章abstract：AIMS:This investigation addresses procedural characteristics of catheter ablation in patients with atrial fibrillation (AF) and sinus bradycardia. METHODS:From the prospective, multi-center German Ablation Registry 1073 patients with sinus rhythm at the time of AF ablation were divided into two groups according to hea...
journal_title：Journal of electrocardiology
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abstract：:A graph consisting of small squares of equal size preprinted on a transparent plastic chart can be used for a quick and accurate calculation of the VCG loop area in each quadrant of the three conventional planes. ...
journal_title：Journal of electrocardiology
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journal_title：Journal of electrocardiology
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journal_title：Journal of electrocardiology
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journal_title：Journal of electrocardiology
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2009.07.019
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
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更新日期：1994-01-01 00:00:00
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/s0022-0736(84)80062-x
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doi：10.1016/j.jelectrocard.2003.10.003
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pub_type： 杂志文章,随机对照试验
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pub_type： 杂志文章,评审
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更新日期：2019-01-01 00:00:00
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更新日期：2017-01-01 00:00:00
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更新日期：2014-11-01 00:00:00
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2004.08.035
更新日期：2004-01-01 00:00:00
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