Positive QRS complex in lead I as a malignant sign in right ventricular outflow tract tachycardia: comparison between polymorphic and monomorphic ventricular tachycardia
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- Kurosaki Kenji
- Department of Heart Rhythm Management, Yokohama Rosai Hospital
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- Nogami Akihiko
- Department of Heart Rhythm Management, Yokohama Rosai Hospital
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- Shirai Yasuhiro
- Department of Heart Rhythm Management, Yokohama Rosai Hospital
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- Kowase Shinya
- Department of Heart Rhythm Management, Yokohama Rosai Hospital
書誌事項
- タイトル別名
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- Positive QRS Complex in Lead I as a Malignant Sign in Right Ventricular Outflow Tract Tachycardia
- – Comparison Between Polymorphic and Monomorphic Ventricular Tachycardia –
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Background: Idiopathic ventricular fibrillation (VF) or polymorphic ventricular tachycardia (PVT) arising from the right ventricular outflow tract (RVOT) is occasionally observed. The difference in the initial ventricular premature contraction (VPC) between VF/PVT and monomorphic VT (MVT) from the RVOT, however, has not yet been fully investigated. Methods and Results: The electrocardiogram findings and the clinical characteristics were compared between 14 patients with PVT and 77 with MVT. The episodes of syncope were more frequent in the VF and/or PVT group (57%) than in the MVT group (10%). An initial VPC with a positive QRS complex in lead I was observed in 10 (71%) of 14 patients with VF/PVT, and in 27 (35%) of 77 patients with MVT (P<0.05). Although radiofrequency (RF) catheter ablation targeting the trigger VPC often produced a morphological change, VF/PVT was eliminated in 13 (93%) of 14 patients after additional RF applications. Conclusions: Malignant arrhythmias from the RVOT, although rare, should be considered when the patient has a syncopal episode and VPC with a positive QRS complex in lead I. (Circ J 2013; 77: 968–974)<br>
収録刊行物
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- Circulation Journal
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Circulation Journal 77 (4), 968-974, 2013
一般社団法人 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
- 1390282680080120448
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- NII論文ID
- 10031138999
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- NII書誌ID
- AA11591968
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- COI
- 1:STN:280:DC%2BC3s3hvVajsA%3D%3D
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- ISSN
- 13474820
- 13469843
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- PubMed
- 23238367
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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
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- 使用不可