Demonstration of multiple antegrade and retrograde atrioventricular pathways
نویسندگان
چکیده
منابع مشابه
Retrograde Dual Atrioventricular Nodal Pathways
28. Bleifeld W, Rupp M, Fleischmann D, Effert S: Syndrom des kranken Sinusknotens ("Sick-Sinus-Syndrome"). Dtsch med Wschr 99: 795, 1974 29. Bouman LN, Gerlings ED, Biersteker PA, Bonke FIM: Pacemaker shift in the sinoatrial node during vagal stimulation. Pflueg Arch 302: 255, 1968 30. Bonke FIM, Bouman LN, van Rijn HE: Change of cardiac rhythm in the rabbit after an atrial premature beat. Circ...
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Patients with accessory atrioventricular pathways that conduct only in the antegrade direction represent an unusual variant of the Wolff-Parkinson-White syndrome. This report describes such patients and compares them with patients with accessory pathways that demonstrate bidirectional conduction. Of 143 patients with single accessory pathways, seven demonstrated exclusive antegrade conduction (...
متن کاملAtrioventricular nodal conduction and refractoriness after intranodal collision from antegrade and retrograde impulses.
Animal studies have suggested that spontaneous or programmed ventricular beats that occur simultaneously with atrial activation may facilitate atrioventricular (AV) nodal conduction during subsequent atrial impulses. However, this possibility has not been systematically studied in the human heart. In the present study the AV nodal conduction during a programmed atrial premature beat (S2) was an...
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Concurrent stimulation of the parasympathetic and sympathetic branches of the autonomic nervous system causes a diminished sympathetic response at high levels of vagal activity. This "accentuated antagonism" has been demonstrated for cardiac chronotropic, inotropic, and dromotropic responses. The effect on conduction was demonstrated with tonic stimulation of the vagus nerve. However, normally ...
متن کاملAn unusual variety of atrioventricular nodal re-entry due to retrograde dual atrioventricular nodal pathways.
Three patients with paroxysmal supraventricular tachycardia (PSVT) had discontinuous ventriculo-artrial conduction curves (V1-V2, A1-A2), suggesting dual A-V nodal pathways. Ventricular echoes occurred simultaneously with sudden increase of V-A interval. These echoes were characterized by retrograde P waves occurring in front of QRS, suggesting utilization of a slow pathway for retrograde condu...
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ژورنال
عنوان ژورنال: Clinical Cardiology
سال: 1981
ISSN: 0160-9289
DOI: 10.1002/clc.4960040207