title: Dual chamber pacing mode in an atrial antitachycardia pacing device without a ventricular lead - A necessary evil.
abstract: We present a case of a single chamber atrial pacemaker implanted for sinus node dysfunction and treatment of macroreentrant atrial tachycardias with atrial antitachycardia pacing. The patient presented with sustained atrial tachycardia above the detection rate, however, the device was unable to detect the tachycardia and did not deliver the programmed therapy. We discuss the nuances of the atrial tachyarrhythmia detection algorithms, and the programming strategies to maximize detection of atrial arrhythmias in a single chamber atrial pacemaker.
authors.affiliation: Division of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA.
authors.forename: Amit
authors.initials: A
authors.lastname: Noheria
authors.affiliation: Division of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA.
authors.forename: Paul A
authors.initials: PA
authors.lastname: Friedman
authors.affiliation: Division of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA.
authors.forename: Samuel J
authors.initials: SJ
authors.lastname: Asirvatham
authors.affiliation: Division of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA.
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: McLeod
keywords: A, atrial event(s); AT/AF, atrial tachycardia/atrial fibrillation; ATP, antitachycardia pacing; Atrial antitachycardia pacing; Device algorithm; ECG, electrocardiogram; LRL/SIR, lower rate limit/sensor-indicated rate; MTR, maximum tracking rate; PVARP, post-ventricular atrial refractory period; Pacing; Pacing mode; V, ventricular event(s)