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A 64-year-old woman presented to the hospital with a complaint of dyspnea on effort. The 12‑lead electrocardiogram showed a baseline complete left bundle-branch block, in which the right bundle developed >2:1 block. The subsequent blocked sinus impulse resulted in a ventricular pause that caused the ventricular escape presenting as a QRS complex with right bundle-branch block pattern. However, some of them disclosed typical fusion beats and led to interference dissociation. Although other possibilities including Lenegre's disease or myocardial disease were not excluded, the effective refractory period of both bundle branches degenerated by myocardial ischemia might be attributed to this rhythm.
This article was published in the following journal.
Name: Journal of electrocardiology
Electrocardiographic diagnosis of acute coronary occlusion can be difficult in the setting of left bundle branch block. If presumably new bundle branch block is considered equivalent to ST-elevation m...
This study sought to investigate how regional left ventricular (LV) function modifies septal motion in left bundle branch block (LBBB).
Baseline predictors of myocardial recovery after cardiac resynchronization therapy (CRT) in left bundle branch block (LBBB)-associated idiopathic nonischemic cardiomyopathy (NICM) are unknown.
Conduction abnormalities after Transcatheter aortic valve replacement (TAVR) account for a high percentage of post TAVR complications. Areas covered: The etiology of conduction abnormalities is closel...
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The investigators sought to evaluate the morphological and functional changes, risk stratification and prognosis of patients of participants with compete left bundle branch block (CLBBB). ...
Right ventricular pacing (RVP) causes left ventricular mechanical dyssynchrony by inducing electrical interventricular and intraventricular dyssynchrony. His bundle pacing may restore the ...
This is a prospective, single-arm, non-randomized, non-blinded study designed to characterize the locations of His Bundle (HB) pacing that results in correction of electrical dyssynchrony ...
This study is to determine 1) the incidence of altered right bundle conduction, including CRBBB, IRBBB or rsR’ pattern in the Taipei city based on the school survey databank from 1999 to...
Ambulatory Electrocardiographic Monitoring for the Detection of High-Degree Atrio-Ventricular Block in Patients With New-onset PeRsistent LEft Bundle Branch Block After Transcatheter Aortic Valve Implantation. The "MARE" Study
The purpose of this study is to determine the incidence and predictors of high degree or complete atrioventricular block (AVB) (paroxysmal or persistent) in patients with new-onset persist...
Small band of specialized CARDIAC MUSCLE fibers that originates in the ATRIOVENTRICULAR NODE and extends into the membranous part of the interventricular septum. The bundle of His, consisting of the left and the right bundle branches, conducts the electrical impulses to the HEART VENTRICLES in generation of MYOCARDIAL CONTRACTION.
A form of heart block in which the electrical stimulation of HEART VENTRICLES is interrupted at either one of the branches of BUNDLE OF HIS thus preventing the simultaneous depolarization of the two ventricles.
Protein factors that inhibit the dissociation of GDP from GTP-BINDING PROTEINS.
Impaired or delayed impulse conduction between the right and left HEART ATRIA. Advanced interatrial blocks are often associated with arrhythmias (e.g., ATRIAL FLUTTER; and ATRIAL FIBRILLATION), direct conduction block via the Bachmann's bundle and concomitant left atrial enlargement. Syndrome of advanced interatrial block associated with SUPRAVENTRICULAR TACHYCARDIA is referred to as Bayes syndrome.
Bacteria that can survive and grow in the complete, or nearly complete absence of oxygen.