Relation of QT-Interval Variability to Ventricular Arrhythmias During Percutaneous Transluminal Coronary Angioplasty.
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- Kajiyama Akio
- Departments of Cardiology, Iwakuni National Hospital
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- Saito Daiji
- Departments of Cardiology, Iwakuni National Hospital
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- Murakami Takashi
- The First Department of Internal Medicine, Okayama University Medical School
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- Shiraki Teruo
- Departments of Cardiology, Iwakuni National Hospital
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- Oka Takefumi
- Departments of Cardiology, Iwakuni National Hospital
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- Doi Masayuki
- Departments of Cardiology, Iwakuni National Hospital
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- Masaka Takuro
- Departments of Cardiology, Iwakuni National Hospital
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- Tanemoto Kazuo
- Departments of Cardiovascular Surgery, Iwakuni National Hospital
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- Tsuji Takao
- The First Department of Internal Medicine, Okayama University Medical School
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The present study investigated the role of the dispersion of QT interval in percutaneous transluminal coronary angioplasty (PTCA)-induced ventricular tachyarrhythmias. Patients with effort angina without a previous myocardial infarction (n=22), who had single-vessel disease of the anterior descending coronary artery (LAD), underwent PTCA if the coronary lesion was 75% or more stenosed in segment 6 or 7 of the LAD. The standard 12-lead ECG was continuously recorded during the procedure. Averaged QTc and QTac intervals, where QTac was the interval from the beginning of QRS complex to the nadir of T wave corrected by Bazett's formula, did not change significantly during PTCA. Of the 22 patients, 7 showed ventricular arrhythmias during PTCA. The maximum difference (ΔQTc) and the standard deviation (QTcSD) of the corrected QT interval in the standard 12-lead ECG increased significantly during PTCA in the 7 patients with ventricular arrhythmias, whereas they decrreased in the 15 patients without ventricular arrhythmias. ΔQTac and QTacSD were not affected by PTCA regardless of ventricular arrhythmias, which shows that the increases in the variation of the ventricular repolarization process play a role in PTCA-induced ventricular arrhythmias. (Jpn Circ J 2001; 65: 779 - 782)
収録刊行物
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- JAPANESE CIRCULATION JOURNAL
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JAPANESE CIRCULATION JOURNAL 65 (9), 779-782, 2001
社団法人 日本循環器学会
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詳細情報 詳細情報について
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- CRID
- 1390282681408246272
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- NII論文ID
- 130004427908
- 110002568083
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- NII書誌ID
- AA00690731
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- COI
- 1:STN:280:DC%2BD3MvpvFOnuw%3D%3D
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- ISSN
- 13474839
- 00471828
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- PubMed
- 11548875
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可