Tachycardia-dependent left bundle branch block associated with bradycardia-dependent variable left bundle branch block.
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چکیده
منابع مشابه
Tachycardia-Dependent Left Bundle Branch Block Associated with Bradyeardia-Dependent Variable Left Bundle Branch Block
This report describes tachyeardiaand bradycardia-dependent left bundle branch block in a patient who exhibited normal intraventricular conduction with impulses intermediate in timing. During bradyeardia, longer cycles were associated with increasing degrees of incomplete left bundle branch block. These clinical observations support the existence of slow Phase 4 depolarization of latent pacemake...
متن کاملEffects of isoproterenol on bradycardia-dependent intra-His and left bundle branch blocks.
The electrophysiologic study of a patient with a history of fainting showed first- and second-degree Mobitz type I intraatrial and intra-His (IH) bundle blocks. Tachycardia and bradycardia-dependent IH block and bradycardia-dependent left bundle branch block were also present. Bradycardia-dependent block was probably caused by slight hypopolarization plus a slow rising slope of phase 4 depolari...
متن کاملEffects of Isoproterenol on Bradyeardia - dependent Intra - His and Left Bundle Branch Blocks
The electrophysiologic study of a patient with a history of fainting showed firstand seconddegree Mobitz type I intraatrial and intra-His (IH) bundle blocks. Tachycardia and bradycardia-dependent IH block and bradycardia-dependent left bundle branch block were also present. Bradycardia-dependent block was probably caused by slight hypopolarization plus a slow rising slope of phase 4 depolarizat...
متن کاملEffects of Isoproterenol on Bradyeardia - dependent Intra - His and Left Bundle Branch Blocks Luis
The electrophysiologic study of a patient with a history of fainting showed firstand seconddegree Mobitz type I intraatrial and intra-His (IH) bundle blocks. Tachycardia and bradycardia-dependent IH block and bradycardia-dependent left bundle branch block were also present. Bradycardia-dependent block was probably caused by slight hypopolarization plus a slow rising slope of phase 4 depolarizat...
متن کاملHis bundle recordings in bradycardia-dependent AV block induced by premature beats.
Symptomatic bradycardia-independent atrioventricular block occurred in a patient with right bundle-branch block, left anterior hemiblock, and prolonged HV interval. The arrhythmia, triggered by a spontaneous or induced premature beats, appeared when the post-extrasystolic PP and HH intervals increased to a critical value. Reinitiation of atrioventricular conduction required the presence of vent...
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عنوان ژورنال:
- Circulation
دوره 48 1 شماره
صفحات -
تاریخ انتشار 1973