排序方式: 共有87条查询结果,搜索用时 15 毫秒
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Elena N. Kwon MD Kerri A. Carter MD Ronald J. Kanter MD 《Congenital heart disease》2014,9(6):E179-E184
The relationship between accessory pathway‐mediated ventricular preexcitation and left ventricular dyssynchrony‐induced dysfunction has been described in patients with Wolff–Parkinson–White (WPW) syndrome in the absence of sustained supraventricular tachycardia (SVT). Supraventricular tachycardia in infants is usually successfully suppressed with antiarrhythmic medications, but catheter ablation has ultimately been required as definitive treatment in medically resistant cases. Catheter ablation has not been described in young infants for dyssynchrony‐related dilated cardiomyopathy in the absence of SVT. We describe a case of an infant with WPW who did not have sustained supraventricular tachycardia, but who developed rapid progression of ventricular dysfunction after birth. Preexcitation could not be medically suppressed but was successfully ablated. This was followed by complete resolution of ventricular dysfunction within 2 months. 相似文献
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Vivian F. Derpa Raphael Koch Mareike Möllers Kerstin Hammer Kathrin Oelmeier de Murcia Helen A. Köster Maria K. Falkenberg Janina Braun Walter Klockenbusch Ralf Schmitz 《Ultrasound in medicine & biology》2019,45(1):233-245
The aim of our prospective pilot study with exploratory analysis was to compare longitudinal and apical foetal speckle tracking echocardiography (STE) using tissue motion annular displacement (TMAD) and segmental longitudinal strain (SLS). We compared two different STE quantification tools in a longitudinal and apical four-chamber view in 57 normal foetuses between 20 and 40 wk of gestation. Myocardial mechanical dyssynchrony and strain were assessed using offline quantification software (QLab Version 10.3, Philips Medical Systems, Andover, MA, USA). We compared the dyssynchrony measurements with TMAD and SLS in longitudinal and apical four-chamber views. Furthermore, we examined the segmental strain values of both ventricles with SLS and compared the differences between longitudinal and apical measurements. Dyssynchrony measurements with TMAD and SLS and strain measurements with SLS were feasible in all cases. In the apical view, the dyssynchrony measurements with TMAD were systematically greater than those achieved with SLS (p < 0.001). For the longitudinal view, no differences were observed between tools (p?=?0.153). The application of SLS provided similar results for dyssynchrony in both views (intra-class correlation coefficient [ICC]?=?0.281, p?=?0.623), but the strain measurements in the left and right ventricles differed significantly between views (ICC?=?–0.082, p?=?0.011, and ICC?=?–0.061, p?=?0.024, respectively). For TMAD, we found large differences in the dyssynchrony values between longitudinal and apical assessment (ICC?=?–0.060, p?=?0.03). Furthermore, TMAD exhibited reduced accuracy in the system's automatic tracking algorithm, limiting the data quality. The dyssynchrony assessment is affected less by the foetal position in SLS than in TMAD. The strain readings in SLS varied depending on the view in which they were assessed. The application of TMAD cannot be recommended for foetal STE. 相似文献
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Eleonora Russo Giulio Russo Maurizio Braccio Mauro Cassese 《World journal of cardiology》2022,14(3):170-176
Functional mitral regurgitation is a common finding among heart failure patients with ischemic and non-ischemic dilated cardiomyopathies. The presence of moderate or severe mitral regurgitation is associated with higher morbidity and mortality. Heart failure patients meeting electrocardiogram and left ventricle function criteria are good candidates for cardiac resynchronization therapy, which may reduce the degree of functional mitral regurgitation in the short and long term, specifically targeting myocardial dyssynchrony and inducing left ventricle reverse remodeling. In this article, we analyze data from the literature about predictors of mitral regurgitation improvement after cardiac resynchronization therapy implantation. 相似文献
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目的应用三平面组织追踪技术(Triplane-TTI)评价心肌梗死患者左室收缩功能与不同步运动。方法对30例正常人和30例心肌梗死患者,通过Simpson法测得左室射血分数(LVEF)。取左室6个壁的基底段和中间段,总共12个节段,应用Triplane-TTI测量各节段收缩最大位移(D)及达位移峰的时间(Td),计算最大差值(Td-maxD)和标准差(Td-sD)。结果心肌梗死组与正常组比较,LVEF减低,12个心肌节段位移峰D值均明显减低,不同步指数Td-maxD,Td-sD显著延长(P<0.05)。LVEF与Td-maxD,Td-sD呈负相关性(r值为-0.671,-0.559,P<0.05)。结论心肌梗死患者普遍存在左室收缩功能损害及不同步运动,且两者之间存在良好的负相关性,三平面组织追踪技术为准确评价左室收缩功能及不同步运动提供了新方法。 相似文献
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Manav Sohal Simon G Duckett Xiahai Zhuang Wenzhe Shi Matthew Ginks Anoop Shetty Eva Sammut Sebastian Kozerke Steven Niederer Nic Smith Sebastien Ourselin Christopher Aldo Rinaldi Daniel Rueckert Gerald Carr-White Reza Razavi 《Journal of cardiovascular magnetic resonance》2014,16(1):58