Abstract：
:Thoracic electromaps were recorded before and after sublingual nitroglycerin (NG) in 26 subjects 15 and 30 days after acute myocardial infarction (MI), in order to evaluate the effect of the drug on injury potentials. Ten patients with documented left ventricular aneurysm were also studied 5 to 46 months after acute MI. Fifteen min after NG there was a significant decrease, compared with basal values, of ST segment elevations, blood pressure and rate-pressure product on both the 15th and 30th days. The degree of ST potentials reduction was not strictly related to the decrease of myocardial oxygen consumption, as indicated by the rate-pressure product. The response to NG on the 15th day did not predict accurately the evolution of injury potentials. In fact there was no significant correlation between percentages reduction of ST after NG on the 15th day and amplitudes of ST segment elevations present on the 30th day. In the patients with ventricular aneurysm, ST potential decrease and hemodynamic changes after NG were similar to those observed in the other groups studied. Our data suggest that it is not possible to differentiate between ST segment elevations associated with a dyssynergic area and those merely due to ischemic injury on the basis of NG sensitivity, and that ST segment elevations in the acute and subacute phase and long after MI have, at least in part, a similar electrophysiological significance.
journal_name
J Electrocardioljournal_title
Journal of electrocardiologyauthors
De Ambroggi L,Landolina M,Todeschini P,Galdangelo F,Ravizza Pdoi
10.1016/s0022-0736(81)81007-2subject
Has Abstractpub_date
1981-10-01 00:00:00pages
351-6issue
4eissn
0022-0736issn
1532-8430journal_volume
14pub_type
杂志文章abstract：:Postoperative atrial fibrillation is common after cardiac surgery. Prediction of which patients will develop postoperative atrial fibrillation would be clinically useful. Increased P-wave duration, suggesting atrial conduction delay and measured from preoperative electrocardiograms, predicts postoperative atrial fibri...
journal_title：Journal of electrocardiology
pub_type： 临床试验,杂志文章,随机对照试验
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2015.08.031
更新日期：2016-01-01 00:00:00
abstract：BACKGROUND:Simulation of the electrical activation of the heart and its comparison with real in vivo activation is a promising method in testing potential determinants of excitation. Simulation of the electrical activity of the human heart is now emerging as a step forward for understanding and predicting electrophysio...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2008.12.008
更新日期：2009-03-01 00:00:00
abstract：:A 66-year-old woman with a long history of hypertension had an electrocardiogram with giant negative U waves in left precordial leads despite hypokalemia. This seems to be the first report of giant negative U waves induced by uncontrolled hypertension with hypokalemia. The occurrence of negative U waves in the presenc...
journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/0022-0736(92)90121-f
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
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更新日期：2005-10-01 00:00:00
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2007.10.006
更新日期：2008-03-01 00:00:00
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/s0022-0736(05)80113-x
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/j.jelectrocard.2010.07.013
更新日期：2010-11-01 00:00:00
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/s0022-0736(00)80096-5
更新日期：2000-01-01 00:00:00
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1054/jelc.2000.8398
更新日期：2000-07-01 00:00:00
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
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更新日期：2021-01-09 00:00:00
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/s0022-0736(95)80064-6
更新日期：1995-01-01 00:00:00
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
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更新日期：2002-01-01 00:00:00
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/0022-0736(92)90005-k
更新日期：1992-07-01 00:00:00
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/s0022-0736(82)80007-1
更新日期：1982-04-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/0022-0736(89)90003-4
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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,多中心研究
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journal_title：Journal of electrocardiology
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/s0022-0736(97)80007-6
更新日期：1997-07-01 00:00:00
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journal_title：Journal of electrocardiology
pub_type： 临床试验,杂志文章
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更新日期：2015-01-01 00:00:00
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
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更新日期：1978-10-01 00:00:00
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：
更新日期：1987-10-01 00:00:00
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
doi：10.1016/j.jelectrocard.2004.04.008
更新日期：2004-07-01 00:00:00
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pub_type： 杂志文章
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更新日期：2020-01-01 00:00:00
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journal_title：Journal of electrocardiology
pub_type： 杂志文章
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更新日期：1981-01-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/0022-0736(93)90070-t
更新日期：1993-01-01 00:00:00
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