Late recovery of atrioventricular conduction after pacemaker implantation for complete @entity616 associated with surgery for XXXX .

@entity1 @entity3585 @entity714 @entity713 @entity1757 @entity616 @entity474 @entity299 @entity4297
OBJECTIVES: Pacemaker implantation is a standard recommendation for @entity1 with persistent complete @entity616 following surgery for @entity299 . This study was performed to determine the incidence and clinical significance of late recovery of atrioventricular conduction following pacemaker implantation. METHODS: Between 1990 and 2001, 5662 open cardiac procedures for @entity4297 were performed at our institution. The postoperative course of all @entity1 with complete @entity616 in whom a permanent pacemaker was implanted was followed on a monthly basis, by either clinical or transtelephonic follow-up. RESULTS: A total of 72 @entity1 with persistent @entity616 underwent pacemaker implantation. After insertion of the pacemaker, recovery of atrioventricular conduction was recognized in 7 of 72 @entity1 (9.6%) at a median of 41 days (18-113 days) after the initial cardiac operation. These included 3 @entity1 with @entity1757 , 2 with ventricular inversion or single ventricle, and 1 each with @entity3585 and @entity474 . During a mean follow-up of 4.4 +/- 2.6 years, there was no late recurrence of @entity616 . Three @entity1 had residual @entity714 and 1 had first-degree @entity713 . CONCLUSIONS: Atrioventricular conduction may return in a small but significant percentage of @entity1 following pacemaker implantation for complete @entity616 associated with congenital heart surgery. When recovery of atrioventricular conduction occurs within the first months after surgery it appears reliable, which suggests that lifelong cardiac pacing may not be necessary in these individuals.
