Determinants of fast- and slow-pathway conduction in patients with dual atrioventricular nodal pathways.
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چکیده
منابع مشابه
Patients with Dual Atrioventricular Nodal Pathways
Electrophysiological studies were performed in two patients with documented paroxysmal supraventricular tachycardia and dual atrioventricular (AV) nodal pathways as defined by the atrial extra-stimulus technique. Both patients manifested two ranges of A-H intervals (AV nodal conduction times) at critical cycle lengths, reflecting fastand slow-pathway conduction. The occurrence of fastand slow-p...
متن کاملHeterogeneity of anterograde fast-pathway and retrograde slow-pathway conduction patterns in patients with the fast-slow form of atrioventricular nodal reentrant tachycardia: electrophysiologic and electrocardiographic considerations.
OBJECTIVES This study sought to define the electrophysiologic and electrocardiographic characteristics of fast-slow atrioventricular nodal reentrant tachycardia (AVNRT). BACKGROUND In fast-slow AVNRT the retrograde slow pathway (SP) is located in the posterior septum, whereas the anterograde fast pathway (FP) is located in the anterior septum; however, exceptions may occur. METHODS Twelve p...
متن کامل"Supernormal conduction" of a premature impulse utilizing the fast pathway in a patient with dual atrioventricular nodal pathways.
Electrophysiological studies with atrial extrastimulus technique suggested the presence of dual atrioventricular (A-V) nodal pathways in a patient with hypothyroidism, as evidenced by a sudden increase of H1-H2 intervals at critical A1-A2 coupling intervals. Following the atrial extrastimulus (A2), a third impulse (A3) occurred spontaneously. During slow pathway conduction of A2, and A3, appear...
متن کاملFluorescent imaging of a dual-pathway atrioventricular-nodal conduction system.
A dual-pathway theory to explain atrioventricular-nodal (AVN) reentry has been proposed previously. However, the exact anatomical and functional correlates of the fast pathway (FP) and slow pathway (SP) have not yet been elucidated. We used optical mapping to reconstruct patterns of activation during retrograde conduction through the AVN and during AVN reentry in the triangles of Koch of 12 rab...
متن کاملRetrograde 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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ژورنال
عنوان ژورنال: Circulation Research
سال: 1975
ISSN: 0009-7330,1524-4571
DOI: 10.1161/01.res.36.6.782