scholarly journals Effects of energy delivery via a His bundle catheter during closed chest ablation of the atrioventricular conduction system.

1983 ◽  
Vol 72 (5) ◽  
pp. 1563-1574 ◽  
Author(s):  
J L Trantham ◽  
J J Gallagher ◽  
L D German ◽  
A Broughton ◽  
T Guarnieri ◽  
...  
Keyword(s):  
Conduction System ◽  
Atrioventricular Conduction ◽  
Closed Chest ◽  
His Bundle ◽  
Energy Delivery

Catheter technique for closed chest ablation of the atrioventricular conduction system in man

1982 ◽  
Vol 49 (4) ◽  
pp. 1012 ◽  
Author(s):  
John J. Gallagher ◽  
Robert H. Svenson ◽  
Jack H. Kasell ◽  
Lawrence D. German ◽  
Gust Bardy ◽  
...  
Keyword(s):  
Conduction System ◽  
Atrioventricular Conduction ◽  
Closed Chest ◽  
Catheter Technique

Effect of disopyramide and disobutamide on conduction in perfused rabbit hearts

1981 ◽  
Vol 59 (11) ◽  
pp. 1192-1195
Author(s):  
Peter E. Dresel ◽  
Keith D. Cameron
Keyword(s):  
Antiarrhythmic Agent ◽  
Conduction System ◽  
Atrioventricular Conduction ◽  
Cardiac Conduction ◽  
Conduction Time ◽  
Related Effect ◽  
Av Node ◽  
His Bundle ◽  
Time Changes ◽  
His Bundle Recording

The effects of disopyramide (DP) and a new antiarrhythmic agent, disobutamide (DB) on cardiac conduction were studied using His bundle recording from modified rabbit Langendorff preparations electrically driven at 3 and 4 Hz. Both disopyramide (4–16 μg/mL) and disobutamide (1–30 μg/ml) slowed conduction throughout the atrioventricular conduction system, i.e., SA, AH, and HV intervals were increased in a dose-related manner. Conversion of the conduction time changes to percent changes indicates that disobutamide has a relatively equal effect on each part of the system whereas disopyramide exhibited significantly less effect on AV nodal conduction. Slowing of conduction in the AV node by DP was clearly related to rate. Changes in SA and HV intervals were rate related to a lesser degree. No such rate-related effect was evident with disobutamide. Block of atrial conduction occurred in two out of six hearts when the rate was increased at 8 μg/mL of DP and in three additional hearts at 16 μg/mL. This was interpreted to indicate a change in atrial excitability such that 2 × threshold currents no longer excited the tissues. This was not observed at any concentration of DB.

Catheter Technique for Closed-Chest Ablation of the Atrioventricular Conduction System

1982 ◽  
Vol 306 (4) ◽  
pp. 194-200 ◽  
Author(s):  
John J. Gallagher ◽  
Robert H. Svenson ◽  
Jack H. Kasell ◽  
Lawrence D. German ◽  
Gust H. Bardy ◽  
...  
Keyword(s):  
Conduction System ◽  
Atrioventricular Conduction ◽  
Closed Chest ◽  
Catheter Technique

Thermal Catheter Disruption During Closed-Chest Radiofrequency Ablation of the Atrioventricular Conduction System

1990 ◽  
Vol 13 (6) ◽  
pp. 719-723 ◽  
Author(s):  
KLAUS J. FROHNER ◽  
ANDREA PODCZECK ◽  
CHRISTINE HIEF ◽  
MICHAEL NURNBERG ◽  
KONRAD K. STEINBACH
Keyword(s):  
Radiofrequency Ablation ◽  
Conduction System ◽  
Atrioventricular Conduction ◽  
Closed Chest

scholarly journals Closed chest modification of atrioventricular conduction system in man for treatment of refractory supraventricular tachycardia.

Heart ◽  
1983 ◽  
Vol 49 (6) ◽  
pp. 544-549 ◽  
Author(s):  
G Critelli ◽  
F Perticone ◽  
F Coltorti ◽  
V Monda ◽  
J Gallagher
Keyword(s):  
Supraventricular Tachycardia ◽  
Conduction System ◽  
Atrioventricular Conduction ◽  
Closed Chest

scholarly journals Hypertrophic cardiomyopathy with paroxysmal atrial fibrillation misdiagnosed as WPW syndrome

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Sang-Hoon Seol ◽  
Ki-Hun Kim ◽  
Jino Park ◽  
Yeo-Jeong Song ◽  
Dong-Kie Kim ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Hypertrophic Cardiomyopathy ◽  
Paroxysmal Atrial Fibrillation ◽  
Conduction System ◽  
Atrioventricular Conduction ◽  
Wpw Syndrome ◽  
Bypass Tract ◽  
Hypertrophied Myocardium

AbstractHypertrophic cardiomyopathy (HCM) is associated with an increased incidence of Wolff–Parkinson–White (WPW) syndrome and atrial fibrillation. However, a delta-like wide QRS can be observed in the hypertrophied myocardium. When considering the rarity of the paraseptal bypass tract (BT), the normal QRS axis suggests a higher possibility of HCM origin. Otherwise, there is no known electrocardiographic clue indicating a wide QRS differentiation between HCM and WPW syndrome. Moreover, the atriofascicular, nodofascicular/ventricular or fasciculoventricular BT should be differentiated. In this case, atrioventricular conduction system incidental injury revealed a wide QRS origin from the HCM, but this method should be avoided except in some selected cases.

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