Results 81 to 90 of about 197,648 (256)

Ventricular Electrical Delay Measured From Body Surface ECGs Is Associated With Cardiac Resynchronization Therapy Response in Left Bundle Branch Block Patients From the MADIT-CRT Trial (Multicenter Automatic Defibrillator Implantation-Cardiac Resynchronization Therapy)

Circulation: Arrhythmia and Electrophysiology, 2018
Background: Although cardiac resynchronization therapy (CRT) is beneficial in heart failure patients with left bundle branch block, 30% of these patients do not respond to the therapy.
F. Plesinger, P. Jurák, J. Halámek, P. Nejedly, P. Leinveber, I. Viscor, V. Vondra, S. McNitt, B. Polonsky, A. Moss, W. Zareba, J. Couderc   +11 more
semanticscholar   +1 more source

Case Report: Left bundle branch pacing in an amyloid light-chain cardiac amyloidosis patient with atrioventricular block

Frontiers in Cardiovascular Medicine
IntroductionAmyloid light-chain cardiac amyloidosis is a progressive infiltrative disease characterized by the deposition of amyloid fibrils in the cardiac tissue, which can cause serious atrioventricular block requiring pacemaker implantation.
Jiaqi Yu, Fanyi Kong, Peng Gao, Taibo Chen, Yongtai Liu, Zhongwei Cheng, Hua Deng, Jinzhi Lai, Lihua Zhang, Jingbo Fan, Jiaqi Wang, Xiaohan Qin, Keyue Sun, Jian Li, Quan Fang, Deyan Yang, Kang’an Cheng   +16 more
doaj   +1 more source

AN INHERITANCE OF IDIOPATHIC CARDIAC CONDUCTION DISORDERS

Российский кардиологический журнал, 2014
Aim. To study relationship of idiopathic atrioventricular and intravenricular disorders of cardiac conductivity with mononucleotide polymorhism (MNP) A/G gene TBX5. Material and methods.
S. S. Tretyakova, S. Yu. Nikulina, V. A. Shulman, A. A. Chernova, V. N. Maksimov, M. I. Voevoda, V. N. Chernov   +6 more
doaj   +1 more source

Transient unexpected improvement of AV conduction: What is the mechanism? [PDF]

, 2006
This ECG was recorded from a 93 year old patient with a previously documented third degree AV block and an underlying LBBB. The twelve lead ECG demonstrates sinus bradycardia at a rate of 52 beats per minute, a PR interval of 230 milliseconds, and a ...
Friedman, Meir, Schweitzer, Paul
core   +2 more sources

Paroxysmal fascicular tachycardia and ventricular tachycardia due to mechanical stimulation by a mitral valve prosthesis [PDF]

, 1986
Electrophysiologic studies were performed in a woman who had two varieties of paroxysmal wide QRS tachycardia after mitral valve replacement with a Starr-Edwards prosthesis. One tachycardia originated in the left anterior fascicle; QRS complexes were 100
Bauernfeind, Robert A., Gallastegui, Jose, Kim, Sung Soon, Welch, William J.   +3 more
core   +1 more source

Left ventricular hemodynamic forces as a marker of mechanical dyssynchrony in heart failure patients with left bundle branch block

Scientific Reports, 2017
Left bundle branch block (LBBB) causes left ventricular (LV) dyssynchrony which is often associated with heart failure. A significant proportion of heart failure patients do not demonstrate clinical improvement despite cardiac resynchronization therapy ...
J. Eriksson, Jakub Zając, U. Alehagen, A. Bolger, T. Ebbers, C. Carlhäll   +5 more
semanticscholar   +1 more source

Alternating QRS Morphologies and PR Intervals After Transcatheter Aortic Valve Replacement

JACC: Case Reports, 2020
Alternating bundle branch block pattern on electrocardiogram (ECG) is a concerning finding with important prognostic implications. This ECG challenge explores the electrophysiological mechanism of a case of alternating bundle branch block with ...
Vivek T. Kulkarni, MD, MHS, EdM, Naga Venkata K. Pothineni, MD, Ramanan Kumareswaran, MD   +2 more
doaj  

Left bundle branch block: from cardiac mechanics to clinical and diagnostic challenges.

Europace, 2017
Left bundle branch block (LBBB) results in an altered pattern of left ventricular (LV) activation and subsequent contraction, causing remarkable changes in LV mechanics, perfusion and workload and ultimately leading to pathologic cardiac remodelling ...
E. Surkova, L. Badano, R. Bellù, P. Aruta, F. Sambugaro, G. Romeo, F. Migliore, D. Muraru   +7 more
semanticscholar   +1 more source

The link in Linking

Indian Pacing and Electrophysiology Journal, 2013
We present 2 cases of the slow-fast form of AVNRT with initially narrow QRS complexes followed by sudden unexpected transition to persistently wide QRS complexes due to aberrant intraventricular conduction.
Jane C. Caldwell, Pablo A. Chiale, Mario D. Gonzalez, Adrian Baranchuk   +3 more
doaj   +1 more source

Shore and Non-Block Points in Hausdorff Continua [PDF]

arXiv, 2020
We study the shore and non-block points of non-metric continua. We reduce the problem of showing a continuum to have non-block points to that of showing an indecomposable continuum to have non-block points. As a corollary we prove that separable continua have at least two non-block points -- and moreover are irreducible about their set of non-block ...
arxiv