Topic
Mobitz II atrioventricular block
About: Mobitz II atrioventricular block is a research topic. Over the lifetime, 8 publications have been published within this topic receiving 110 citations.
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TL;DR: Eight patients with “variant” angina pectoris were analyzed for electrocardiographic features before, during, and after chest pain; all patients showed marked concave ST-segment elevations with upright T waves during pain which disappeared with subsidence of pain.
44 citations
TL;DR: The observations made indicate that A-V conduction times and the appearance of “split His’ potentials may be influenced by the recording catheter itself, and suggest that the operators be prepared to institute immediate right ventricular pacing when His bundle recordings are obtained in patients with left bundle branch block.
Abstract: Mechanical injury of the atrioventricular (A-V) node, His bundle, and right bundle branch is a potential complication of His bundle recording. In the presence of left bundle branch block, catheter-induced injury of the right bundle branch may cause prolongation of A-V conduction time or even complete A-V block. Two cases are reported in which catheter-induced transient high grade Mobitz II A-V block, acute reversible prolongation of infranodal conduction time with probable intra-Hisian conduction delay, and persistent (6 hours duration) complete A-V block occurred in patients with left bundle branch block. The observations made indicate that A-V conduction times and the appearance of "split His" potentials may be influenced by the recording catheter itself, and suggest that the operators be prepared to institute immediate right ventricular pacing when His bundle recordings are obtained in patients with left bundle branch block.
33 citations
TL;DR: A 34‐year‐old man with a history of cough syncope exhibited Mobitz type II atrioventricular block with a narrow QRS complex on Holter monitoring, which was found to be above the His bundle on the Hisundle electrogram.
Abstract: A 34-year-old man with a history of cough syncope exhibited Mobitz type II atrioventricular block with a narrow QRS complex on Holter monitoring. The baseline electrophysiologic study was normal. No significant atrioventricular block could be induced with carotid sinus massage, neck suction, or intravenous propranolol. However, coughing reproduced Mobitz type II atrioventricular block, which was found to be above the His bundle on the His bundle electrogram. A review of the mechanism of cough syncope is also presented.
25 citations
TL;DR: It is hoped that the publication of cases will contribute to the awareness of practicing cardiologists and electrophysiologists to the existence of this potentially serious form of AV conduction abnormality and hasten the implantation of pacemakers in patients who require them.
Abstract: Certain electrocardiographic patterns are well recognized for their propensity to progress to more severe forms of atrioventricular (AV) block, thus requiring pacemaker implantation. This article presents an infrequently recognized and deceptively benign pattern of conduction abnormality with great potential for advancement to severe AV block and necessity for pacemaker therapy. The pattern consists of alternating bundle branch block (BBB) in unison with alternation of the PR interval so that the right BBB beats and left BBB beats appear to be wedded to their own but different PR intervals. It is hoped that the publication of these cases will contribute to the awareness of practicing cardiologists and electrophysiologists to the existence of this potentially serious form of AV conduction abnormality and hasten the implantation of pacemakers in patients who require them.
8 citations
TL;DR: An asymptomatic elderly male presented with complete right bundle branch block, left anterior fascicular block and Mobitz Type II second degree atrioventricular block; this consideration was felt to warrant permanent pacemaker implantation.
7 citations