title: Atrioventricular synchrony in the background of ventricular noise and undersensing.
abstract: The 24-hr electrocardiogram (ECG) interpretation in patients with double-chamber pacemakers may be challenging. The difficulty increases if not well-known pacemaker algorithm and device malfunction coexist. We show atrial synchronization pace (ASP) in a patient with ventricular lead damage. We provide detailed description of electrocardiogram and intracardiac electrogram. ASP may confuse 24-hr ECG monitoring interpretation, especially in patients with ventricular lead dysfunction.
authors.affiliation: Department of Electrocardiology, The John Paul II Hospital, Kraków, Poland.|Jagiellonian University Medical College, Kraków, Poland.
authors.forename: Paweł T
authors.identifier: http://orcid.org/0000-0001-5788-575X
authors.initials: PT
authors.lastname: Matusik
authors.affiliation: Department of Electrocardiology, The John Paul II Hospital, Kraków, Poland.
authors.forename: Andrzej
authors.initials: A
authors.lastname: Ząbek
authors.affiliation: The J. Dietl Specialist Hospital, Kraków, Poland.
authors.forename: Patrycja S
authors.initials: PS
authors.lastname: Matusik
authors.affiliation: Department of Electrocardiology, The John Paul II Hospital, Kraków, Poland.|Institute of Cardiology, Jagiellonian University Medical College, Kraków, Poland.
authors.forename: Barbara
authors.initials: B
authors.lastname: Małecka
authors.affiliation: Department of Electrocardiology, The John Paul II Hospital, Kraków, Poland.|Institute of Cardiology, Jagiellonian University Medical College, Kraków, Poland.
authors.forename: Jacek
authors.initials: J
authors.lastname: Lelakowski
mesh_terms: D000369:Aged, 80 and over; D018880:Atrial Premature Complexes / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology; D002304:Cardiac Pacing, Artificial / Q000379:methods*; D015716:Electrocardiography, Ambulatory / Q000379:methods*; D005260:Female; D006801:Humans; D010138:Pacemaker, Artificial; D018754:Ventricular Dysfunction / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology
keywords: atrial synchronization pace; electrocardiogram; lead failure