Atrioventricular and intraventricular conduction disturbances in XXXX .

@entity1 @entity712 @entity850 @entity1757 @entity472 @entity7874 @entity337 @entity453 @entity340 @entity616
Electrophysiologic studies of His' bundle were done on 32 consecutive @entity1 with symptomatic @entity340 . Nineteen had pure @entity337 and 13 had @entity472 , four with significant regurgitation. Fifteen of the former had atrioventricular (AV) and/or intraventricular (IV) @entity616 . In those with @entity472 , eight had @entity616 , all intraventricular but one. Twelve of the 13 with @entity472 had radiographically indentifiable @entity7874 ; all four with a peak systolic gradient greater than 80 mm Hg had @entity1757 . Of the 32 @entity1 , six had A-H prolongation and in all the predominant lesion was @entity337 (one with moderate @entity850 ). There was no difference in age, clinical @entity712 , @entity453 , or prolonged H-V interval. However, PR prolongation (P = .01) and decreased ejection fraction (P = .02) was significantly increased in the former group. @entity1 with @entity337 had longer A-H and H-V intervals (NS), induced @entity616 at lower heart rates (P = .01), and higher A-V node effective (P = .001) and functional (P = .01) refractory periods. In summary, @entity1 with @entity340 have a high incidence of atrioventricular and intraventricular conduction disease.
