Function of Potential Bypass Tracts for Atrioventricular Conduction
نویسندگان
چکیده
منابع مشابه
Function of potential bypass tracts for atrioventricular conduction.
Function of potential bypass tracts for the atrioventricular conduction was examined in isolated rabbit hearts using microelectrodes, a suction electrode, and bipolar electrocardiographic leads. After the normal A-V conduction was blocked by acetylcholine, conduction to the ventricle occurred with a much shorter A-V conduction time and without significant QRS change, when a point at the root of...
متن کاملEvaluation of intracardiac recordings in diagnosis of impulse formation and concealed conduction in atrioventricular nodal bypass tracts.
Invasive electrophysiological studies were performed in 2 symptomatic patients with recurrent arrhythmias in which impulse formation presumably occured within atrioventricular nodal bypass tracts. Case 1 had ectopic beats arising within, or close to, the upper end of a left-sided atrioventricular nodal bypass tract of the type described by Brechenmacher. In addition, this conduction was 'concea...
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block with intact atrioventricular conduction: electrophysiologic and pathologic correlations in three cases. Am J Cardiol 32: 783, 1973 28. Narula OS, Gann D, Samet P: Prognostic value of H-V interval. In His Bundle Electorcardiography and Clinical Electrophysiology, edited by Narula OS. Philadelphia, FA Davis Company, 1975, p 437 29. Dhingra RC, Denes P, Wu D, Wyndham CR, Amat-y-Leon F, Towne...
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Twenty nine patients who had had refractory supraventricular tachycardia were studied 4-36 (mean 16) months after transvenous fulguration of the atrioventricular junction. Twenty two had complete atrioventricular block, five partial atrioventricular block, and two had atrioventricular conduction via an accessory atrioventricular pathway. Though all patients were free of palpitation after the pr...
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A-V conduction was analyzed in 75 patients (mean age, 73 years) with sinus bradycardia (SB) by His bundle (BH) recordings. Forty-five of these patients had normal QRS complexes ('-0.10 sec) and 30 had abnormal QRS complexes (_0.12 sec). The conduction times through the atrium (P-A), A-V node (A-H), and His-Purkinje system (H-V) were measured during normal sinus rhythm and transient right atrial...
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ژورنال
عنوان ژورنال: Circulation
سال: 1970
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.41.3.413