Iatrogenic Left Atrial Tachycardias

epending on initial ablative approach, the incidence of left trial tachycardia (LAT) or flutter after atrial fibrillation AF) ablation has varied about 10-fold. Using segmental, stial pulmonary vein (PV) and/or antral isolation, about 3% f patients require repeat ablation for LAT (1,2). Conersely, using widely encircling PV lines plus mitral and roof ines, LAT incidence is often 20% to 30% (3,4), although utliers exist (5). Lastly, targeting complex fractionated lectrograms without linear lesions or PV isolation, LAT ccurred after 8.3% of ablations (6).