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Electrocardiography of Atrioventricular Block
Cardiology Clinics, 2021Delayed atrioventricular (AV) conduction most commonly occurs in the AV node, resulting from AH prolongation on an intracardiac electrocardiogram and PR prolongation on a surface electrocardiogram. AV conduction may be blocked in a 2:1 manner, with a normal PR interval and wide QRS suggesting infranodal disease, whereas a prolonged PR interval and ...
Eric N. Prystowsky +2 more
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Iatrogenic Atrioventricular Block
Cardiac Electrophysiology Clinics, 2021Iatrogenic atrioventricular (AV) block can occur in the context of cardiac surgery, percutaneous transcatheter, or electrophysiologic procedures. In cardiac surgery, patients undergoing aortic and/or mitral valve surgery are at the highest risk for developing perioperative AV block requiring permanent pacemaker implantation.
Edward P. Gerstenfeld +2 more
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Reversible Causes of Atrioventricular Block
Cardiac Electrophysiology Clinics, 2021Atrioventricular blocks may be caused by a variety of potentially reversible conditions, such as ischemic heart disease, electrolyte imbalances, medications, and infectious diseases. Such causes must be always ruled out to avoid unnecessary pacemaker implantation. Patient management and reversibility rates depend on the underlying cause.
Gemma Pelargonio, Chiara Pavone
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Pathology of Atrioventricular Block
Cardiology Clinics, 1984This article provides a summary of the types of congenital atrioventricular block and the various acquired diseases in which atrioventricular block may occur. Some lesions found in atrioventricular block are illustrated.
Saroja Bharati, Maurice Lev
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Paroxysmal atrioventricular block
Heart Rhythm, 2009Paroxysmal atrioventricular block (AVB) is a poorly defined clinical entity characterized by abrupt and unexpected change from 1:1 atrioventricular conduction to complete heart block, leading to syncope and potential sudden cardiac death. Although a dangerous condition because of unreliable escape mechanism, proper diagnosis of paroxysmal AVB is often ...
Mark E. Josephson +2 more
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Atrioventricular block revisited
Comprehensive Therapy, 2002AV blocks, their definitions and significance, are discussed. Type II, second-degree AV block is infranodal, whereas 2/3 of Type I with BBB are infranodal, 2:1 AV block is neither Type I nor II block. Infranodal blocks require pacing regardless of symptoms.
S. Serge Barold, S. Serge Barold
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Classification of Atrioventricular Block
Postgraduate Medicine, 1973The site of atrioventricular block determines its clinical significance and, hence, the proper mode of treatment or implantation of an electronic pacemaker. For practical purposes, the site of block can be identified in most instances by the duration of the QRS complex.
Marcello Chimienti +2 more
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AACN Advanced Critical Care, 1992
The presentation of atrioventricular block in the critical care setting and the assessment parameters that the critical care nurse may use to aid in the determination of the severity of atrioventricular block are described. The underlying pathophysiology of atrioventricular block is examined to enhance the nurse’s understanding of the rationale for ...
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The presentation of atrioventricular block in the critical care setting and the assessment parameters that the critical care nurse may use to aid in the determination of the severity of atrioventricular block are described. The underlying pathophysiology of atrioventricular block is examined to enhance the nurse’s understanding of the rationale for ...
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