[ @entity956 and @entity955 by XXXX stimulation].

@entity1 @entity713 @entity3603 @entity591 @entity1817 @entity956 @entity2224 @entity955 @entity943
136 @entity1 were followed after implantation a @entity3603 pacemaker (PM) for a total of 1,919 @entity1 -months (m = 14.1 months/ @entity1 ). 22/136 @entity1 had one or more episodes of @entity955 (AF) postoperatively. In 121/136 @entity1 (group A) AF had not been documented before, in 4 it was unknown at the time of implantation, but was verified retrospectively (group B). 11 @entity1 (group C) had a positive history of previous AF. Post implantation 7.4% in group A and 81.8% in group C developed AF. In @entity1 with @entity1817 ( @entity1817 ) the incidence was 10/37 (27%), in those with @entity713 (AV) 6/77 (7.8%) and in cases with both @entity1817 and AV 6/22 (27.3%). The first AF episode occurred during the implantation itself (n = 2) or during the hospital course in 9/22 @entity1 (A: 11%, B/C: 64% early attacks), and later on in 13 with a time delay of 1-24 months (m = 8.5, 8 @entity1 ) in group A and 2-15 months (m = 6.6, 4 @entity1 ) in groups B/C. 2 @entity1 of group C had no AF episodes post implantation. In the individual @entity1 the number of attacks ranged from 1 to 3 (10.4/100 @entity1 -months) in group A and from 1 to 6 (20.1/100 @entity1 -months) in groups B/C. During AF 16/22 @entity1 had a ventricular rate of 110-185, m = 132 bpm. In 6 @entity1 the @entity591 was mediated by the PM and in 10 by fast intrinsic AV conduction. 1 @entity1 with @entity1817 , 2 with @entity1817 + AV (spontaneous ventricular rate less than 45 bpm) and 3 with AV needed ventricular backup-pacing during AF. In 7 @entity1 a total of 15 attacks of @entity956 could be terminated by atrial overdrive pacing, in 5 of these episodes by temporary high rate A00 stimulation via the implanted pacemaker lead system. Otherwise AF was converted to sinus rhythm by antiarrhythmic drugs. After termination AF often recurred, but only 3 @entity1 developed chronic @entity955 . In 2 @entity1 a ventricular rate greater than 180 bpm during AF reverted the PM to asynchronous mode, a possible cause of @entity2224 in one. No other complications due to the PM itself have been encountered. AF, therefore, common during @entity3603 pacing, even in @entity1 without any AF history before implant. Both the incidence and the recurrence of AF depend on the presence or absence of previous @entity943 .(ABSTRACT TRUNCATED AT 400 WORDS)
