title: Isolated Atrial Lead Conduction Delay following Right Atrial Radiofrequency Maze Procedure.
abstract: A 60-year-old man with a dual-chamber implantable cardioverter defibrillator and severe dyspnea on exertion due to apical hypertrophic cardiomyopathy underwent a septal myectomy and radiofrequency maze procedure. Following the procedure a persistent delay in atrial sensing was observed and was most likely a result of iatrogenic conduction delay from right atrial ablation lines. These observations suggest that atrial conduction properties can be altered during the surgical maze procedure and should be considered in the differential diagnosis of sensing or pacing malfunction.
authors.affiliation: Division of Cardiovascular Diseases, Department of Internal Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.
authors.forename: Mackram F
authors.initials: MF
authors.lastname: Eleid
authors.forename: Joseph A
authors.initials: JA
authors.lastname: Dearani
authors.forename: Win-Kuang
authors.initials: WK
authors.lastname: Shen