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Distribution Variance of Focal Atrial Tachycardia Foci and Long-Term Outcomes After Ablation. ABSTRACT Introduction The distribution of the origin of focal atrial tachycardia (FAT) in patients with different ages have not been clearly elucidated. After a mean follow-up of 47.2 months, FAT recurred in 57 patients.
During atypical atrioventricular nodal reentrant tachycardia (AVNRT), the earliest atrial activation site following retrograde slow pathway (SP) conduction is at the atrial exit of the left inferior extension (LIE) in the coronary sinus (CS) or the right inferior extension (RIE) on the tricuspid annulus (TA).
In Ebstein’s anomaly, there is downward or apical displacement of posterior and septal tricuspid leaflets. The anterior leaflet is not displaced, but is elongated to meet the other leaflets, so that when it closes, a loud sound, tricuspid sound, is produced, which is called as the sail sound.
Patients with repaired tetralogy of Fallot are at risk of ventricular tachycardia (VT) and sudden cardiac death. m/s) bound by the right ventriculotomy, ventricular septal defect patch, and tricuspid and pulmonic valves. Most VTs arise from 5 slowly conducting anatomic isthmuses (SCAIs; conduction velocity ≤0.5
A 28-year-old man with recurrent palpitations and no structural heart disease presented with a documented wide QRS complex tachycardia (WCT). He had a history of slow pathway ablation for atrioventricular nodal reentrant tachycardia three months ago.
Methods and Results We report a case of fast-slow type AVNRT with two distinct atrial breakthrough sites during tachycardia. The earliest atrial activation site (EAAS) was at the right inferior septum, followed by the inferolateral wall of the tricuspid annulus. Ablation at the EAAS shifted it to the inferolateral wall.
In the PVI + group, extra PV ablation included left atrial posterior wall isolation (87%), mitral isthmus ablation (37%), and cavo-tricuspid isthmus ablation (3%). While AF recurrence did not significantly differ (25% vs. 28%, p =0.713), PVI + group had a significantly higher atrial tachycardia recurrence (8% vs. 22%, p <0.001).
Methods and Results This case report discusses a 65-year-old man who had previously undergone pulmonary vein isolation (PVI) and cavo-tricuspid isthmus ablation for atrial fibrillation before ASD closure, respectively. He developed atrial tachycardia (AT) and underwent catheter ablation.
Tricuspid atresia – ECG Right atrial overload is manifest as tall P waves in lead II and left ventricular hypertrophy with strain pattern is seen in lateral leads with tall R waves, ST segment depression and T wave inversion. All these features together in a cyanotic congenital heart disease is characteristic of tricuspid atresia.
Abstract Introduction Typical atrial flutter (AFL) is a macroreentrant tachycardia in which intracardiac conduction rotates counterclockwise around the tricuspid annulus. Typical AFL has specific electrocardiographic characteristics, including a negative sawtooth-like wave in the inferior lead and a positive F wave in lead V1.
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