Electrocardiographic Determinants of the Polymorphic QRS Morphology in Idiopathic Right Ventricular Outflow Tract Tachycardia
書誌事項
- 公開日
- 2011-12-02
- 資源種別
- journal article
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1111/j.1540-8167.2011.02232.x
- 公開者
- Wiley
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説明
<jats:p><jats:bold>Coupling Intervals and Polymorphic QRS Morphologies</jats:bold>. <jats:italic>Introduction:</jats:italic> Premature ventricular contractions (PVCs) arising from the right ventricular outflow tract (RVOT) can trigger polymorphic ventricular tachycardia (PVT) or ventricular fibrillation (VF) in patients with no structural heart disease. We aimed to clarify the ECG determinants of the polymorphic QRS morphology in idiopathic RVOT PVT/VF.</jats:p><jats:p><jats:italic>Methods and Results:</jats:italic> The ECG parameters were compared between 18 patients with idiopathic PVT/VF (PVT‐group) and 21 with monomorphic VT arising from the RVOT (MVT‐group). The coupling interval (CI) of the first VT beat was comparable between the 2 groups. However, the prematurity index (PI) of the first VT beat was smaller in the PVT‐group than in the MVT‐group (P < 0.001). Furthermore, the QT index, defined as the ratio of the CI to the QT interval of the preceding sinus complex, was also smaller for the PVT/VF in the PVT‐group than that for the VT in the MVT‐group (P < 0.01). In the PVT‐group, the CI of the first VT beat was comparable between that of VT and isolated PVCs, but the PI of the first VT beat was shorter for VT than isolated PVCs (P < 0.05). The PI was the only independent determinant of the polymorphic QRS morphology (odd ratio = 2.198; 95% confidence interval = 1.321–3.659; P = 0.002).</jats:p><jats:p><jats:italic>Conclusion:</jats:italic> The smaller PIs of the first VT beat may result in a polymorphic QRS morphology. <jats:italic>(Cardiovasc Electrophysiol, Vol. 23, pp. 521‐526, May 2012)</jats:italic></jats:p>
収録刊行物
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- Journal of Cardiovascular Electrophysiology
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Journal of Cardiovascular Electrophysiology 23 (5), 521-526, 2011-12-02
Wiley
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キーワード
- Adult
- Male
- Time Factors
- Heart Ventricles
- Action Potentials
- Arrhythmias, Cardiac
- Middle Aged
- Electrocardiography
- Logistic Models
- Japan
- Predictive Value of Tests
- Multivariate Analysis
- Catheter Ablation
- Odds Ratio
- Tachycardia, Ventricular
- Humans
- Female
- Electrophysiologic Techniques, Cardiac
- Aged
- Retrospective Studies
詳細情報 詳細情報について
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- CRID
- 1360004235688954624
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- NII論文ID
- 20000709604
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- ISSN
- 15408167
- 10453873
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- PubMed
- 22136173
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- 資料種別
- journal article
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- データソース種別
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- Crossref
- CiNii Articles
- KAKEN
- OpenAIRE