检索结果-南通市图书馆

dyssynchrony Induced by Ventricular Preexcitation: A Risk Factor for the Development of Dilated Cardiomyopathy

Cardiovascular Innovations and Applications 2020年第3期5卷 9-18页

作者： Chencheng Dai Baojing Guo Ling Han Caihua Sang Jianzeng Dong Changsheng Ma Department of Pediatric Cardiology Beijing Anzhen HospitalCapital Medical UniversityNo.2 Anzhen Road100029 BeijingChina Department of Cardiology Beijing Anzhen HospitalCapital Medical UniversityNo.2 Anzhen Road100029 BeijingChina

Background:Signifi cant left ventricular dysfunction may arise in right-sided accessory pathways with ventricular preexcitation in the absence of recurrent or incessant *** has just been realized and not enough attention has been paid to ***:In the last 7 years,we identifi ed 12 consecutive children with a diagnosis of ventricular preexcitation–induced dilated *** report describes the clinical and echocardiographic characteristics of the patients before and after ***:Dyssynchronous ventricular contraction was observed by M-mode echocardiography and two-dimensional strain analysis in all *** basal and middle segments of the interventricular septum became thin and moved similarly to an aneurysm,with typical bulging during the end of *** locations of the accessory pathways were the right-sided septum(n=5)and the free wall(n=7).Left ventricular synchrony was obtained shortly after *** left ventricular function recovered to normal and the left ventricular end-diastolic diameter decreased gradually during ***:A causal relationship between ventricular preexcitation and the development of dilated cardiomyopathy is supported by the complete recovery of left ventricular function and reversed left ventricular remodeling after the loss of ventricular ***-related dyssynchrony was thought to be the crucial *** preexcitation–induced dilated cardiomyopathy is an indication for ablation with a good prognosis.

关键词： ventricular preexcitation accessory pathway Wolff-Parkinson-White syndrome dyssynchrony dilated cardiomyopathy

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Prevalence of left ventricular dyssynchrony in patients with heart failure assessed by a novel programmer-cardioGRAF

引用

Journal of Geriatric Cardiology 2009年第3期6卷 151-156页

作者： Can-Zhan Zhu Naoto Takahashi Akira Yamamoto Masahira Ishikawa Naomi Kawaguchi Takahiro Uchida Kazuo Munakata Department of Cardiology 2nd Hospital of Xi ＇an Jiaotong University Xi ＇an China Internal Medicine Radiology Department Nippon Medical School Musashikosugi Hospital

Objectives Left ventricular systolic dyssynchrony is the most important determinant of response to cardiac resynchronization therapy （CRT）, playing a vital role to predict improvement of systolic function or LV reverse remodeling. CardioGRAF is a novel programmer based on the ECG gated single photon emission computed tomography （G-SPECT） imaging to detect LV systolic and diastolic dyssynchrony simultaneously. This study was to investigate the prevalence of systolic and diastolic left ventricular （LV） dyssynchrony in patients with heart failure. Methods We retrospectively studied 69 patients with heart disease, including 31 patients who had symptoms of heart failure （NYHA class Ⅱ-Ⅲ）, and 38 patients who had no symptoms of heart failure. （NYHA class Ⅰ）. G- SPECT data were analyzed by cardiaGRAF, and measurements included the time to end systole （TES）, the time to peak ejection （TPE）, the time to peak filling （TPF）, TES＋TPF and maximal difference （MD） of each parameters were obtained, using the 95th percentile of the control group as a cutoffof 150 ms for MD-TES, 139 ms for MD-TPE, 345 ms for MD-TPF and 315 ms for MD-TES＋TPF. Results The prevalence of LV systolic dyssynchrony was significantly higher in heart failure patients with reduced LV ejection fraction （LVEF）〈45% （72% for MD-TES; 64% for MD-TPE） compared with heart failure patients with preserved LVEF=45% （14% for both MD-TES and MD-TPE; P=0.002, P=0.005, respectively）; The prevalence of MD-TES〈150 ms was higher in NYHA class Ⅲ patients （64%） compared with NYHA class Ilpatients （27%, P=0.049）. However, the prevalence of the LV diastolic dyssynchrony were high but not difference between NYHA class III（47% for both MD-TPF and MD-TES＋TPF） and class Ⅲ（63% for MD-TPF; 69% for MD-TES＋TPF; P=NS） patients as well as between patients with preserved LVEF （43% for both MD-TPF and MD-TES＋TPF） and patients with reduced LVEF（64% for MD-TPF; 72% for MD-TES＋TPF; P=NS）. Conclusions The prevalence of LV systolic dyssynchrony was

关键词： dyssynchrony heart failure cardioGRAF single photon emission computed tomography

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Speckle Tracking for Assessment of Left Ventricular dyssynchrony

引用

World Journal of Cardiovascular Diseases 2014年第4期4卷 149-155页

作者： Muhammad Asrar ul Haq Nima Rudd Ivan Subiakto Peter Barlis Nagesh S. Anavekar Department of Cardiology The Northern Hospital Melbourne Australia

Cardiac resynchronization therapy (CRT) is an established therapy for selected heart failure (HF) patients to improve symptoms, ventricular function, and survival. Although increasingly used, left ventricular (LV) dyssynchrony assessment by echocardiography has failed to show enough predictive value to assess patient response to CRT and the current guidelines do not recommend its routine use. Furthermore, a variety of echocardiographic techniques used for the purpose, including tissue Doppler imaging (TDI), real time three-dimensional echocardiography, M-mode, and various Doppler parameters, showed limited value and poor agreement between the studies and methods, greatly influenced by interobserver variability. Speckle tracking echocardiography (STE) is a more recent approach that uses strain imaging to assess LV dyssynchrony. This article discusses the speckle tracking for LV dyssynchrony and its current clinical applications.

关键词： Speckle Tracking STE dyssynchrony Echocardiography

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Mechanical dyssynchrony and deformation imaging in patients with functional mitral regurgitation

引用

World Journal of Cardiology 2016年第2期8卷 146-162页

作者： Isabella Rosa Claudia Marini Stefano Stella Francesco Ancona Marco Spartera Alberto Margonato Eustachio Agricola Echocardiography Laboratory San Raffaele HospitalIRCCS

Chronic functional mitral regurgitation(FMR) is a frequent finding of ischemic heart disease and dilated cardiomyopathy(DCM), associated with unfavourable prognosis. Several pathophysiologic mechanisms are involved in FMR, such as annular dilatation and dysfunction, left ventricle(LV) remodeling, dysfunction and dyssynchrony, papillary muscles displacement and dyssynchrony. The best therapeutic choice for FMR is still debated. When optimal medical treatment has already been set, a further option for cardiac resynchronization therapy(CRT) and/or surgical correction should be considered. CRT is able to contrast most of the pathophysiologic determinants of FMR by minimizing LV dyssynchrony through different mechanisms: Increasing closing forces, reducing tethering forces, reshaping annular geometry and function, correcting diastolic MR. Deformation imaging in terms of two-dimensional speckle tracking has been validated for LV dyssynchrony assessment. Radial speckle tracking and three-dimensional strain analysis appear to be the best methods to quantify intraventricular delay and to predict CRT-responders. Speckle-tracking echocardiography in patients with mitral valve regurgitation has been usually proposed for the assessment of LV and left atrial function. However it has also revealed a fundamental role of intraventricular dyssynchrony in determining FMR especially in DCM, rather than in ischemic cardiomyopathy in which MR severity seems to be more related to mitral valve deformation indexes. Furthermore speckle tracking allows the assessment of papillary muscle dyssynchrony. Therefore this technique can help to identify optimal candidates to CRT that will probably demonstrate a reduction in FMR degree and thus will experience a better outcome.

关键词： Mitral regurgitation Deformation imaging 3D echocardiography Mechanical dyssynchrony Speckle tracking

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Evaluation of left ventricular systolic dyssynchrony by two-dimensional speckle tracking imaging and real-time three-dimensional echocardiography

引用

South China Journal of Cardiology 2015年第2期16卷 80-87页

作者：吕函璐刘英梅韦育林邱琼 Department of Cardiology Sun Yat-sen Memorial Hospital Sun Yat-sen University

Background Two-dimensional speckle tracking imaging （2D-STI） and real-time three-dimensional echocardiography （RT-3DE） have more advantages in evaluating left ventricular （LV） systolic dyssynchrony than traditional echocardiographic techniques. The study aimed to evaluate LV dyssynchrony parameters by both 2D-STI and RT-3DE, and the correlation between these two techniques. Methods A total of 43 chronic heart failure （CHF） patients and 27 healthy volunteers were enrolled. There were 23 dyssynchrony parameters selected to evaluate left ventricular systolic synchronization, involving 15 from 2D-STI and 8 from RT-3DE. Results Few of the dyssynchrony parametersshowednegative correlations with LV ejection fraction （LVEF） in the CHF group. The difference between time to peak-systolic radial strain of the anteroseptal and posterior segments at the level of papillary muscles [AS-P（RS）] from 2D-STI showed positive correlations with parts of the parameters from RT-3DE （P 〈 0.05）. Conclusions LV systolic dysfunction does not correlate with dyssynchrony. Moreover, there is a weak association between 2D-STI and RT-3DE in assessment of left ventricular dyssynchrony.

关键词： heart failure speckle tracking imaging real-time three-dimensional echocardiography dyssynchrony

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Minimizing right ventricular pacing in sinus node disease: Sometimes the cure is worse than the disease

引用

World Journal of Clinical Cases 2015年第3期3卷 206-209页

作者： Elia De Maria Alina Olaru Stefano Cappelli Cardiology Unit Ramazzini Hospital Department of Cardiovascular Medicine University of Modena ad Reggio Emilia

Traditional right ventricular(RV) apical pacing has been associated with heart failure, atrial fibrillation and increased mortality. To avoid the negative consequences of RV apical pacing different strategies have been developed, among these a series of pacing algorithms designed to minimize RV pacing. These functions are particularly useful when there is not the need for continuous RV pacing: intermittent atrioventricular blocks and, mainly, sinus node disease. However, in order to avoid RV pacing, the operationalfeatures of these algorithms may lead to adverse(often under-appreciated) consequences in some patients. We describe a case of a patient with sinus node disease, in whom right atrial only pacing involved long atrio-ventricular delay to allow intrinsic ventricular conduction, which led to symptomatic hypotension that could be overcome only by "forcing" also right ventricular apical pacing. We subsequently discuss this case in the context of current available literature.

关键词： Right ventricular apical pacing Pacemaker algorithms dyssynchrony Pacemaker syndrome Right atrial pacing

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Predictors of persistence of functional mitral regurgitation after cardiac resynchronization therapy:Review of literature

引用

World Journal of Cardiology 2022年第3期14卷 170-176页

作者： Eleonora Russo Giulio Russo Maurizio Braccio Mauro Cassese Department of Cardiovascular Surgery Casa Sollievo della Sofferenza HospitalIRCCSSan Giovanni Rotondo 71013Italy Institute of Cardiology Catholic University of the Sacred HeartRome 00168Italy

Functional mitral regurgitation is a common finding among heart failure patients with ischemic and non-ischemic dilated *** presence of moderate or severe mitral regurgitation is associated with higher morbidity and *** 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 *** this article,we analyze data from the literature about predictors of mitral regurgitation improvement after cardiac resynchronization therapy implantation.

关键词： Functional mitral regurgitation Cardiac resynchronization therapy Predictors Mitral regurgitation improvement dyssynchrony

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Severe Mitral Regurgitation Due to Pacing in Patient Post Aortic Valve Replacement (A Case Report)

引用

World Journal of Cardiovascular Surgery 2018年第1期8卷 22-27页

作者： Shailendra Kumar Motwani Vishnu Datt D. K. Tempe National Board G.B. Pant Hospital New Delhi India Department of Cardiac Anesthesiology and Critical Care G.B. Pant Hospital New Delhi India Department of Cardiac Anesthesiology G.B. Pant Hospital New Delhi India

Epicardial Cardiac pacing may lead to severe Mitral Regurgitation by one of the following mechanisms: 1) Inappropriate Atrioventricular interval. 2) Myocardial ischemia due to fast heart rate may cause transient papillary muscle dysfunction. 3) Right Ventricular apical pacing may lead to Left Ventricular dyssynchrony in the presence of optimal Atrioventricular synchrony. Acute severe Mitral Regurgitation leading to acute severe hemodynamic deterioration is a reported complication of Permanent Pacemaker insertion. Our case demonstrated acute severe MR as a consequence of RV Pacing leading to acute hemodynamic deterioration, which was relieved on withdrawal of pacing. Left Ventricular dyssynchrony can be relieved by reducing the peacemaker rate or changing to biventricular pacing, this reduces the severity of Mitral Regurgitation and improves the hemodynamics due to simultaneous activation of left and right ventricles. This case illustrates the acute and potentially dramatic effects of intra-Left Ventricular dyssynchrony upon Mitral Valve function. Informed consent was obtained from the patient to report the case. Thus right ventricular pacing can cause left ventricular dyssynchrony leading to worsening of Mitral Regurgitation. It is important to pay attention to mode of pacing when evaluating Mitral Regurgitation in patients with Right Ventricular pacemaker and unstable hemodynamics after initiation of pacing.

关键词： Epicardial Pacing Mitral Regurgitation dyssynchrony Hemodynamics Cardiopulmonary Bypass Atrioventricular Synchrony Atrioventricular Interval

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Equilibrium radionuclide angiocardiography:Its usefulness in current practice and potential future applications

引用

World Journal of Radiology 2012年第10期4卷 421-430页

作者： Deepanjan Mitra Sandip Basu Department of Nuclear Medicine and PET CT North City Diagnostic Centre Radiation Medicine Centre Bhabha Atomic Research Centre TMH Annexe Parel Mumbai 400012 India

The routine and potential future applications of equilibrium radionuclide angiocardiography/multigated acquisition (MUGA) in clinical decision making are explored in this review. The non-invasive nature of the test, less operator dependence, lower radiation dose and ease of performing, even in ill patients, are important considerations in clinical cardiology practice. Two important routine uses of this modality in day-to-day clinical practice include the following: serial assessment of left ventricular ejection fraction (LVEF) in patients receiving cardiotoxic chemotherapy, and determination of accurate LVEF in patients with intractable heart failure. Other potential utilities of MUGA that could be translated into clinical practice include determination of regional LVEF, obtaining information about both right and left ventricle in suitable patients as a part of first pass angiocardiography, identification of diastolic dysfunction in patients with heart failure with preserved LVEF, and demonstration of dyssynchrony prior to cardiac resynchronisation, specifically by MUGA single photon emission *** last two indications are particularly important and evolving at this point.

关键词： Equilibrium radionuclide Angiocardiography Multigated acquisition Left ventricular ejection fraction Diastolic parameters dyssynchrony

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

His Bundle Pacing:Rebirth of an Important Technique for Pacing the Intrinsic Conduction System

引用

Cardiovascular Innovations and Applications 2018年第B05期3卷 61-71页

作者： Michael R.Kaufmann Matthew S.McKillop Thomas A.Burkart Mark Panna William M.Miles C.Richard Conti Department of Medicine University of FloridaGainesvilleFL 32610USA

Permanent pacemaker implant is a commonly performed cardiac procedure for treatment of bradycardia or conduction system *** conventional right ventricular(RV)pacing a lead is implanted at the RV apex or on the RV ***,RV apical or RV septal pacing causes iatrogenic left bundle-branch block and ventricular dyssynchrony and can lead to adverse cardiac remodeling,a pacing-mediated cardiomyopathy,and congestive heart ***,permanent His-bundle pacing uses the intrinsic rapidly-conducting His-Purkinje system to activate the ventricle,thereby maintaining(or sometimes even restoring)ventricular *** patients may derive benefit from permanent His-bundle pacing.

关键词： His-bundle pacing ventricular dyssynchrony cardiac resynchronization therapy permanent pacing

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：