Follow-up of P dispersion after transcatheter closure of an atrial septal defect in children

Objectives: to determine in paediatric patients with atrial septal defects whether differences in p wave dispersion occurred with transcatheter closures using the amplatzer septal occluder.method: a total of 31 children who had undergone transcathater closures were evaluated. p maximum, p minimum, and p dispersion were measured with 12-lead surface electrocardiography, before the procedure and one week, one month, three months, six months and one year following the procedure. spss 10 was used for statistical analysis.results: there were 23 (74.2%) females and 8 (25.8%) males with an overall mean age of 7.5±4.1 years and mean weidht of 26.2±16.9kg. the p maximum and p minimum measurements differed between patients during the follow-up period. both measurements decreased with time. however, p dispersion was not significantly different throughout the follow-up period (before the procedure p maximum 95.4±15.6 ms, p minimum 64.5±15.4 ms, and p dispersion 30.8±11.4ms; one year later, p maximum 76.1±14.6 ms, p minimum 47.1±12.1 ms, and p dispersion 29.1±9.1ms).conclusion: over time, there are no p dispersion differences in transcatheter closures using the amplatzer septal occluder.