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관상동맥 성형술이 QT 간격분산에 미치는 영향

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Author(s)
신이철김윤년현대우허승호박남희
Keimyung Author(s)
Kim, Yoon NyunHur, Seung HoPark, Nam Hee
Department
Dept. of Internal Medicine (내과학)
Dept. of Thoracic & Cardiovascular Surgery (흉부외과학)
Journal Title
순환기
Issued Date
2003
Volume
33
Issue
11
Keyword
QT dispersionCoronary angioplastyMyocardial ischemia
Abstract
Background and Objectives:The change in QT dispersion (QTd) immediately after balloon angioplasty reflects
the immediate impact of ischemia. We intended to analyze the immediate impact of ischemia on myocardial
repolarization. Subjects and Methods:Forty-six patients who underwent percutaneous coronary intervention
were enrolled. The standard 12-lead electrocardiogram (ECG) was recorded just before, during, and 1 minute, 5
minutes and 10 minutes after ballooning. QTd was determined by the difference between the maximum and minimum
QT interval (QTi). We then calculated the corrected QTi (QTc) using Bazett’s formula. QTd and QTi
were compared according to the site of the ballooned vessel, number of ballooned vessels and history of acute
myocardial infarction. Results:QTd just before, during, and 1 minute, 5 minutes and 10 minutes after ballooning
were 35.21±10.36 msec, 54.56±16.89 msec, 50.91±14.20 msec, 45.52±9.6 msec and 38.56±10.89 msec,
respectively. QTd increased markedly during ballooning, but after myocardial ischemia was relieved, decreased
rapidly. Ten minutes after ballooning, QTd was reduced to a similar level as that of baseline. There were no significant
differences between the AMI and non-myocardial infarction groups, single-vessel and multi-vessel groups,
and the location of the stenosed artery. There was no significant difference in QTi according to different stenosed
vessel. Conclusion:QT (QTc) dispersion increased rapidly with myocardial ischemia and reduced rapidly after
the myocardial ischemia was resolved. Therefore, increased QTd can be used as an early clue of myocardial
ischemia. (Korean Circulation J 2003;33 (11):977-986)
Alternative Title
Effect of Coronary Angioplasty on QT Dispersion
Keimyung Author(s)(Kor)
김윤년
허승호
박남희
Publisher
School of Medicine
Citation
신이철 et al. (2003). 관상동맥 성형술이 QT 간격분산에 미치는 영향. 순환기, 33(11), 977–986. doi: 10.4070/kcj.2003.33.11.977
Type
Article
ISSN
1225-164X
DOI
10.4070/kcj.2003.33.11.977
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/36754
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Internal Medicine (내과학)
1. School of Medicine (의과대학) > Dept. of Thoracic & Cardiovascular Surgery (흉부외과학)
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