title: Atrial escape-capture bigeminy in dominant atrial rhythm with 2:1 exit block.
abstract: A 27-year-old woman with atrial bigeminy is reported in whom long PP intervals alternate with short PP intervals. All P waves are negative in lead II and all PR intervals measure 0.12 s. In the 12-lead electrocardiogram, however, these P waves were definitely different in configuration from each other, and were divided into two groups. Namely, these negative P waves are divided into those of dominant atrial rhythm J1 with 2:1 exit block, and those of atrial escape J2. Long J1-J2 intervals alternate with short J2-J1 intervals. These electrocardiographic findings show the presence of atrial escape-capture bigeminy. Such atrial escape-capture bigeminy in dominant atrial rhythm with 2:1 exit block has never been reported before.
authors.affiliation: Katoh Cardiovascular Clinic, Ohtsu, Japan.
authors.forename: Takakazu
authors.initials: T
authors.lastname: Katoh
authors.forename: Shinji
authors.initials: S
authors.lastname: Kinoshita
authors.forename: Ryuzaburou
authors.initials: R
authors.lastname: Yasuda
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Sasaki
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Tsujimura
mesh_terms: D000328:Adult; D004562:Electrocardiography; D005260:Female; D006325:Heart Atria / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology; D006344:Heart Septal Defects, Atrial / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D012804:Sick Sinus Syndrome / Q000175:diagnosis / Q000503:physiopathology; D012848:Sinoatrial Block / Q000175:diagnosis* / Q000503:physiopathology*