Biomaterial Database

Relationship between clinical presentation of atrioventricular block and its localization defined by His bundle electrogram. 1979

J Lukl

The frequency of clinical and electrocardiographic symptoms in dependence on the localization of the atrioventricular (AV) block, defined with the aid of His bundle electrogram, was investigated in 49 patients with 2nd-or 3rd-degree AV block. The Adams-Stokes syndrome, broad ventricular complex, and Mobitz II-type AV block were most frequently encountered in patients with infrahisian block, whereas Mobitz I type block was most frequently found in patients with suprahisian block. A chronic course of AV block was most frequent in patients with intrahisian block. The mean ventricular frequency of complete blockade was highest in suprahisian block, and lowest in infrahisian block. The localization of the block is a decisive factor for estimation of the prognosis and for indication of pacemaker implantation.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
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
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
D005260	Female		Females
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
D006329	Heart Conduction System	An impulse-conducting system composed of modified cardiac muscle, having the power of spontaneous rhythmicity and conduction more highly developed than the rest of the heart.	Conduction System, Heart,Conduction Systems, Heart,Heart Conduction Systems,System, Heart Conduction,Systems, Heart Conduction
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000219	Adams-Stokes Syndrome	A condition of fainting spells caused by heart block, often an atrioventricular block, that leads to BRADYCARDIA and drop in CARDIAC OUTPUT. When the cardiac output becomes too low, the patient faints (SYNCOPE). In some cases, the syncope attacks are transient and in others cases repetitive and persistent.	Stokes-Adams Attacks,Adam-Stokes Attacks,Stokes-Adams Syndrome,Adam Stokes Attacks,Adams Stokes Syndrome,Attacks, Adam-Stokes,Attacks, Stokes-Adams,Stokes Adams Attacks,Stokes Adams Syndrome,Syndrome, Adams-Stokes,Syndrome, Stokes-Adams
D000368	Aged	A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available.	Elderly