title: Electrophysiological features of atrial flutter in cardiac sarcoidosis: a report of two cases.
abstract: We report two cases of systemic sarcoidosis with atrial flutter as the clinical manifestation. In one patient, who had symptoms of shorter duration, the arrhythmia was no longer inducible after a course of glucocorticoid therapy. Electroanatomical mapping in the other case revealed patchy fibrosis of the left atrial myocardium and multiple macro-reentrant circuits. Sinus rhythm could be restored with ablation of these reentrant circuits. To our knowledge, this is the first report on the demonstration of atrial scarring in a patient with sarcoidosis using 3-D electroanatomical mapping. These two cases illustrate that the inflammation of atrial myocardium is the primary mechanism of atrial arrhythmias in patients with cardiac sarcoidosis.
authors.affiliation: Centre for Heart Rhythm Disorders, University of Adelaide and Royal Adelaide Hospital, Adelaide, Australia.
authors.forename: Narayanan
authors.initials: N
authors.lastname: Namboodiri
authors.forename: Martin K
authors.initials: MK
authors.lastname: Stiles
authors.forename: Glenn D
authors.initials: GD
authors.lastname: Young
authors.forename: Prashanthan
authors.initials: P
authors.lastname: Sanders