Dual-loop circuits in postoperative atrial macro re-entrant tachycardias
نویسندگان
چکیده
منابع مشابه
Using electrocardiographic activation time and diastolic intervals to separate focal from macro-re-entrant atrial tachycardias.
OBJECTIVES This study was designed to separate focal from atypical macro-re-entrant atrial tachycardia (AT) on the electrocardiogram (ECG). BACKGROUND Focal AT often cannot be distinguished from macro-re-entrant AT until the time of electrophysiology study (EPS). We hypothesized that quantitative ECG metrics should separate focal AT, using its short activation relative to tachycardia cycle le...
متن کاملUnusual examples of supraventricular re-entrant tachycardias.
Programmed electrical stimulation of the heart uncovered unusual findings in four patients suffering from supraventricular tachycardias. They included 1) two supraventricular tachycardias of different location and frequency in the same patient, 2) increase in rate of a re-entrant atrioventricular (A-V) nodal tachycardia followed by the development of 2-to-1 A-V block, 3) a "gap" in A-V conducti...
متن کاملComputed tomography model-based treatment of atrial fibrillation and atrial macro-re-entrant tachycardia
AIMS Accurate orientation within true three-dimensional (3D) anatomies is essential for the successful radiofrequency (RF) catheter ablation of atrial fibrillation (AF) and atrial macro-re-entrant tachycardia (MRT). In this prospective study, ablation of AF and MRT was performed exclusively using a pre-acquired and integrated computed tomography (CT) image for anatomical 3D orientation without ...
متن کاملUse of non-contact mapping in the treatment of right atrial tachycardias in patients with and without congenital heart disease.
AIMS Right atrial (RA) tachycardias may involve several mechanisms other than typical isthmus-dependent flutters, particularly in patients with congenital heart disease (CHD) or structural heart disease. We aimed at investigating the clinical utility of non-contact mapping in the diagnosis and ablation of these complex arrhythmias. METHODS AND RESULTS Non-contact mapping was used to treat RA ...
متن کاملA dual-loop bi-atrial macro-reentry flutter during atrial fibrillation ablation.
Dual-loop macro-reentry atrial flutter (AFL) is an atypical AFL, which has two loops of the reentry circuit usually localized within single atrium. In this case report, we present a double-loop bi-atrial flutter during atrial fibrillation ablation, in which the two reentry circuit loops were located around the inferior vena cava (IVC) and the mitral annulus, (MA) respectively.
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ژورنال
عنوان ژورنال: Heart
سال: 2007
ISSN: 1355-6037
DOI: 10.1136/hrt.2006.094748