Abstract:
:To clarify the clinical significance of the negative U wave during acute myocardial ischemia, the appearance of the U wave and ST-segment elevation on electrocardiography during percutaneous transluminal coronary angioplasty (PTCA) of the left anterior descending artery (LAD group: 11 patients) or right coronary artery (RCA group: 18 patients) was studied. During PTCA, U-wave inversion (newly developed negative U wave, and increased negativity of the pre-existing negative U wave) was observed in 37 (90%) of 41 patients in the LAD group and in 16 (89%) of 18 patients in the RCA group. The incidence of ST-segment elevation was similar to that of U-wave inversion; however, U-wave inversion appeared before detectable ST-segment elevation in 20 patients (49%) in the LAD group and in 4 patients (22%) in the RCA group. Moreover, U-wave inversion was observed frequently in a wider range of leads than ST-segment elevation. These results suggest that the U wave is a more sensitive indicator of myocardial ischemia than ST-segment elevation in some patients, and that a negative U wave may be produced by a different mechanism than that which produces ST-segment deviation, although both are related to myocardial ischemia.
journal_name
Clin Cardioljournal_title
Clinical cardiologyauthors
Yano H,Hiasa Y,Aihara T,Nakaya Y,Mori Hdoi
10.1002/clc.4960140311subject
Has Abstractpub_date
1991-03-01 00:00:00pages
232-6issue
3eissn
0160-9289issn
1932-8737journal_volume
14pub_type
杂志文章abstract:BACKGROUND:ST-segment depression during exercise testing is frequently observed in the absence of restenosis after percutaneous transluminal coronary angioplasty (PTCA). HYPOTHESIS:With the goal of improving the prediction of restenosis after PTCA, we evaluated the usefulness of ST-segment depression plus QT dispersio...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960220608
更新日期:1999-06-01 00:00:00
abstract::A community-wide study of patients hospitalized with acute myocardial infarction in metropolitan Baltimore was conducted to examine socio-demographic and clinical characteristics in association with ventricular fibrillation and cardiac arrest (VF/CA). Multivariate analyses revealed that variables significantly associa...
journal_title:Clinical cardiology
pub_type: 杂志文章
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pub_type: 杂志文章,评审
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pub_type: 杂志文章
doi:10.1002/clc.4960211206
更新日期:1998-12-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960200815
更新日期:1997-08-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960060504
更新日期:1983-05-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2020-09-01 00:00:00
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更新日期:1990-09-01 00:00:00
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更新日期:2012-09-01 00:00:00
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更新日期:2012-12-01 00:00:00
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pub_type: 杂志文章,多中心研究
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更新日期:2010-12-01 00:00:00
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pub_type: 杂志文章
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更新日期:1994-03-01 00:00:00
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pub_type: 杂志文章
doi:10.1002/clc.4960230911
更新日期:2000-09-01 00:00:00
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pub_type: 杂志文章
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更新日期:2009-03-01 00:00:00
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pub_type: 杂志文章
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更新日期:1987-11-01 00:00:00
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pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1002/clc.22253
更新日期:2014-06-01 00:00:00
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pub_type: 杂志文章,多中心研究
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更新日期:2015-02-01 00:00:00
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pub_type: 社论,评审
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更新日期:2012-01-01 00:00:00
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更新日期:2014-02-01 00:00:00
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pub_type: 杂志文章
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更新日期:1995-09-01 00:00:00
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更新日期:2003-09-01 00:00:00
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更新日期:2015-05-01 00:00:00
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更新日期:2010-12-01 00:00:00
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pub_type: 杂志文章,meta分析
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更新日期:2019-01-01 00:00:00
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更新日期:2010-03-01 00:00:00
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更新日期:2018-06-01 00:00:00
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pub_type: 杂志文章
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更新日期:1988-04-01 00:00:00