Tachycardia-dependent second degree AV-block in a patient with right bundle branch block. 1987

D Kalusche, and H Roskamm

A 55-year old male patient, with dizzy spells during everyday activity and a complete right bundle branch block as the sole electrocardiographic abnormality, reproducibly demonstrated tachycardia-dependent Mobitz Type II- and 2:1 second degree atrioventricular block. An electrophysiologic study revealed a provocable block within the distal portion of the bundle of His without evidence of a split His potential. Because of the truly tachycardia-dependent AV-block, beta-blocker medication was initiated to prevent high sinus rates during everyday activity. This therapy abolished symptoms totally.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011690 Purkinje Fibers Modified cardiac muscle fibers composing the terminal portion of the heart conduction system. Purkinje Fiber,Fiber, Purkinje,Fibers, Purkinje
D002036 Bundle of His 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. Atrioventricular Bundle,Anterior Fascicle,Kent-His Bundle,Left Bundle Branch of His,Posterior Fascicle,Right Bundle Branch of His,Atrioventricular Bundles,Bundle, Atrioventricular,Bundle, Kent-His,Bundles, Atrioventricular,Fascicle, Anterior,Fascicle, Posterior,His Bundle,Kent His Bundle
D002037 Bundle-Branch Block 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. Fascicular Block,Anterior Fascicular Block,Bundle Branch Block,Left Bundle-Branch Block,Posterior Fascicular Block,Right Bundle-Branch Block,Anterior Fascicular Blocks,Block, Anterior Fascicular,Block, Bundle Branch,Block, Bundle-Branch,Block, Fascicular,Block, Left Bundle-Branch,Block, Posterior Fascicular,Block, Right Bundle-Branch,Blocks, Anterior Fascicular,Blocks, Bundle Branch,Blocks, Bundle-Branch,Blocks, Fascicular,Blocks, Left Bundle-Branch,Blocks, Posterior Fascicular,Blocks, Right Bundle-Branch,Branch Block, Bundle,Branch Blocks, Bundle,Bundle Branch Blocks,Bundle-Branch Block, Left,Bundle-Branch Block, Right,Bundle-Branch Blocks,Bundle-Branch Blocks, Left,Bundle-Branch Blocks, Right,Fascicular Block, Anterior,Fascicular Block, Posterior,Fascicular Blocks,Fascicular Blocks, Anterior,Fascicular Blocks, Posterior,Left Bundle Branch Block,Left Bundle-Branch Blocks,Posterior Fascicular Blocks,Right Bundle Branch Block,Right Bundle-Branch Blocks
D002304 Cardiac Pacing, Artificial Regulation of the rate of contraction of the heart muscles by an artificial pacemaker. Pacing, Cardiac, Artificial,Artificial Cardiac Pacing,Artificial Cardiac Pacings,Cardiac Pacings, Artificial,Pacing, Artificial Cardiac,Pacings, Artificial Cardiac
D004562 Electrocardiography Recording of the moment-to-moment electromotive forces of the HEART as projected onto various sites on the body's surface, delineated as a scalar function of time. The recording is monitored by a tracing on slow moving chart paper or by observing it on a cardioscope, which is a CATHODE RAY TUBE DISPLAY. 12-Lead ECG,12-Lead EKG,12-Lead Electrocardiography,Cardiography,ECG,EKG,Electrocardiogram,Electrocardiograph,12 Lead ECG,12 Lead EKG,12 Lead Electrocardiography,12-Lead ECGs,12-Lead EKGs,12-Lead Electrocardiographies,Cardiographies,ECG, 12-Lead,EKG, 12-Lead,Electrocardiograms,Electrocardiographies, 12-Lead,Electrocardiographs,Electrocardiography, 12-Lead
D006327 Heart Block Impaired conduction of cardiac impulse that can occur anywhere along the conduction pathway, such as between the SINOATRIAL NODE and the right atrium (SA block) or between atria and ventricles (AV block). Heart blocks can be classified by the duration, frequency, or completeness of conduction block. Reversibility depends on the degree of structural or functional defects. Auriculo-Ventricular Dissociation,A-V Dissociation,Atrioventricular Dissociation,A V Dissociation,A-V Dissociations,Atrioventricular Dissociations,Auriculo Ventricular Dissociation,Auriculo-Ventricular Dissociations,Block, Heart,Blocks, Heart,Dissociation, A-V,Dissociation, Atrioventricular,Dissociation, Auriculo-Ventricular,Dissociations, A-V,Dissociations, Atrioventricular,Dissociations, Auriculo-Ventricular,Heart Blocks
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000404 Ajmaline An alkaloid found in the root of RAUWOLFIA SERPENTINA, among other plant sources. It is a class 1-A antiarrhythmic agent that apparently acts by changing the shape and threshold of cardiac action potentials. Ajmaline Hydrochloride,Aritmina,Cardiorythmine,Gilurtymal,Rauverid,Serenol,Tachmalin,Wolfina

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