Supernormal conduction in the accessory pathway of patients with overt or concealed ventricular pre-excitation
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چکیده
منابع مشابه
Supernormal conduction in the accessory pathway of patients with overt or concealed ventricular pre-excitation.
It was recently shown that supernormal conduction in the diseased His-Purkinje system is more common than previously thought, and is always associated with prolongation of refractoriness. To assess whether supernormal conduction could also occur in the accessory pathway of patients with ventricular pre-excitation, 21 patients with manifestly prolonged refractoriness in the accessory pathway wer...
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THE FAILURE of a cardiac impulse to traverse the entire atrioventricular (AV) conducting system is called concealed conduction. Electrocardiographically, the effects of concealed conduction are reflected in the conduction and/or formation of subsequent beats.1 The concept of concealed conduction can be applied to explain (1) post-extrasystolic prolongation of the P-R interval, (2) the irregular...
متن کاملMultiple accessory pathways in patients with the pre-excitation syndrome.
We have studied 135 patients with the pre-excitation syndrome and have demonstrated evidence of multiple accessory pathways in 20 patients. Five patients had two distinct accessory atrioventricular (A-V) connections, associated with enhanced A-V node conduction in one patient. Twelve patients had a single accessory A-V connection associated with enhanced A-V conduction. In one of these there wa...
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In three patients anterograde conduction across a previously undocumented accessory pathway was exposed by the development of atrial fibrillation. This unusual presentation illustrates the possible unmasking of the Wolff-Parkinson-White syndrome by other factors in patients who have not previously demonstrated the potential for anterograde accessory pathway conduction.
متن کاملAberrant Ventricular Conduction Types and Concealed Conduction
Aberrant ventricular conduction definition: It is a term applied to alterations in QRS contour of supraventricular beats resulting from impulse transmition during periods of physiologic refractoriness and/or depressed conductivity. The supraventricular electrical impulse is conducted abnormally through the ventricular conducting system. This results in a wide QRS complex that may be confused wi...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 1987
ISSN: 0735-1097
DOI: 10.1016/s0735-1097(87)80466-7