High Signal Intensity on T2-Weighted Cardiovascular Magnetic Resonance Imaging Predicts Life-Threatening Arrhythmic Events in Hypertrophic Cardiomyopathy Patients
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- Hen Yasuki
- Department of Cardiology, Sakakibara Heart Institute
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- Takara Ayako
- Department of Cardiology, Sakakibara Heart Institute
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- Iguchi Nobuo
- Department of Cardiology, Sakakibara Heart Institute
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- Utanohara Yuko
- Department of Cardiology, Sakakibara Heart Institute
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- Teraoka Kunihiko
- Department of Cardiology, Sakakibara Heart Institute
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- Takada Kaori
- Department of Radiology, Sakakibara Heart Institute
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- Machida Haruhiko
- Department of Radiology, Kyorin University School of Medicine
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- Takamisawa Itaru
- Department of Cardiology, Sakakibara Heart Institute
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- Takayama Morimasa
- Department of Cardiology, Sakakibara Heart Institute
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- Yoshikawa Tsutomu
- Department of Cardiology, Sakakibara Heart Institute
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<p>Background:The prognostic value of high signal intensity on T2-weighted cardiovascular magnetic resonance imaging (T2 high signal) in hypertrophic cardiomyopathy (HCM) patients in a single-center cohort was investigated.</p><p>Methods and Results:A total of 237 HCM patients (median age, 62 years; 143 male) underwent T2-weighted, cine and late gadolinium enhancement (LGE) imaging, and were followed (median duration, 3.4 years) for life-threatening arrhythmic events. The clinical and magnetic resonance imaging characteristics were extracted, and predictors of life-threatening arrhythmic events were assessed on multivariate analysis. LGE was present in 180 patients (75.9%). Median LGE score was 3 in a left ventricle 17-segment model. T2 high signal was present in 49 patients (20.7%). The annual events rate was significantly higher in patients with extensive LGE (score ≥4) than in those without (3.0%/year vs. 0.5%/year, P=0.011). On multivariate analysis, extensive LGE (hazard ratio, 5.650; 95% CI: 1.263–25.000, P=0.024) as an independent predictor for life-threatening arrhythmic events. In patients with extensive LGE, the annual events rate was significantly higher in patients with T2 high signal than in those without (5.8%/year vs. 0.9%/year, P=0.008).</p><p>Conclusions:Extensive LGE was an independent predictor of life-threatening arrhythmic events in HCM patients. Furthermore, T2 high signal is useful for the risk stratification of serious arrhythmic events in patients with extensive LGE.</p>
収録刊行物
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- Circulation Journal
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Circulation Journal 82 (4), 1062-1069, 2018
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
- 1390282680083218176
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- NII論文ID
- 130006528588
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- NII書誌ID
- AA11591968
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- ISSN
- 13474820
- 13469843
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- NDL書誌ID
- 028895365
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- PubMed
- 29467354
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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
- NDL
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- PubMed
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