Left ventricular shape predicts arrhythmic risk in fibrotic dilated cardiomyopathy.

Left ventricular shape predicts arrhythmic risk in fibrotic dilated cardiomyopathy.
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DOI:
10.1093/europace/euab306
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发表时间:
2022-07-21
期刊:
影响因子:
6.1
通讯作者:
Lamata, Pablo
Lamata, Pablo
中科院分区:
医学2区
文献类型:
--
作者:
Balaban, Gabriel;Halliday, Brian P.;Hammersley, Daniel;Rinaldi, Christopher A.;Prasad, Sanjay K.;Bishop, Martin J.;Lamata, Pablo

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左心室(LV)形状的重构是非缺血性扩张型心肌病(DCM)的标志之一,并可能导致室性心律失常和心源性猝死。我们试图研究一种新的三维(3D)形状分析方法来量化左心室重构,以预测DCM的心律失常。我们从156例DCM和晚期钆增强(LGE)患者的舒张末期心脏磁共振图像中创建了3D LV形状模型。使用形状模型,主成分分析,和Cox-Lasso回归,我们得出了一个预后的左心室心肌形状(LVAS)评分,确定谁达到了心脏性猝死,流产心脏性猝死,持续性室性心动过速的复合终点的患者。我们还提取了几何度量来寻找潜在的预后标记物。在长达16年的随访期间(中位数7.7,四分位数间距:3.9),25例患者达到了药物终点。预测至心脏事件发生时间的最佳左心室形状是一个抛物面纵向轮廓,具有相对较宽的基础。单因素考克斯回归分析显示,相应的LVAS与心血管事件相关(风险比= 2.0/四分位数; 95%置信区间:1.3-2.9),在单变量考克斯回归和倾向评分调整中,以及在三个多变量模型中; LV射血分数,纽约心脏协会III/IV级(型号1),植入式心律转复除颤器接收(型号2),和心脏栓塞治疗(模型3)。扩张型心肌病患者左室形态重构的生物标志物可以帮助确定致命性室性心律失常风险最大的患者。
Remodelling of the left ventricular (LV) shape is one of the hallmarks of non-ischaemic dilated cardiomyopathy (DCM) and may contribute to ventricular arrhythmias and sudden cardiac death. We sought to investigate a novel three dimensional (3D) shape analysis approach to quantify LV remodelling for arrhythmia prediction in DCM. We created 3D LV shape models from end-diastolic cardiac magnetic resonance images of 156 patients with DCM and late gadolinium enhancement (LGE). Using the shape models, principle component analysis, and Cox-Lasso regression, we derived a prognostic LV arrhythmic shape (LVAS) score which identified patients who reached a composite arrhythmic endpoint of sudden cardiac death, aborted sudden cardiac death, and sustained ventricular tachycardia. We also extracted geometrical metrics to look for potential prognostic markers. During a follow-up period of up to 16 years (median 7.7, interquartile range: 3.9), 25 patients met the arrhythmic endpoint. The optimally prognostic LV shape for predicting the time-to arrhythmic event was a paraboloidal longitudinal profile, with a relatively wide base. The corresponding LVAS was associated with arrhythmic events in univariate Cox regression (hazard ratio = 2.0 per quartile; 95% confidence interval: 1.3–2.9), in univariate Cox regression with propensity score adjustment, and in three multivariate models; with LV ejection fraction, New York Heart Association Class III/IV (Model 1), implantable cardioverter-defibrillator receipt (Model 2), and cardiac resynchronization therapy (Model 3). Biomarkers of LV shape remodelling in DCM can help to identify the patients at greatest risk of lethal ventricular arrhythmias.
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