Intraventricular Delay and Blocks

From the atrioventricular node, electrical activation is propagated to both ventricles by a system of specialized conducting fibers, His Purkinje System (HPS), guaranteeing a fast, synchronous depolarization of both ventricles. From the predivisional common stem, a right and left branch separate, su...

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Bibliographic Details
Published inCardiac electrophysiology clinics Vol. 10; no. 2; p. 211
Main Authors Leonelli, Fabio M, Bagliani, Giuseppe, De Ponti, Roberto, Padeletti, Luigi
Format Journal Article
LanguageEnglish
Published United States 01.06.2018
Subjects
Bundle of His - physiopathology
Bundle-Branch Block - diagnosis
Bundle-Branch Block - physiopathology
Electrocardiography
Heart Ventricles - physiopathology
Humans
Hemiblocks
Bundle branch block
Right bundle branch block
His Purkinje disease
Left bundle branch
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Summary:From the atrioventricular node, electrical activation is propagated to both ventricles by a system of specialized conducting fibers, His Purkinje System (HPS), guaranteeing a fast, synchronous depolarization of both ventricles. From the predivisional common stem, a right and left branch separate, subdividing further in a fairly predictable fashion. Synchronous ventricular activation results in a QRS with specific characteristics and duration of less than 110 milliseconds. Block or delay in any part of the HPS changes the electrocardiographic (ECG) morphology. This article discusses the use and limitations of standard ECG in detecting abnormal ventricular propagation in specific areas of the HPS.
ISSN:1877-9190
DOI:10.1016/j.ccep.2018.02.003