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Fig. 3 | BMC Cardiovascular Disorders

Fig. 3

From: Unique electrocardiographic pattern “w” wave in lead I of idiopathic ventricular arrhythmias arising from the distal great cardiac vein

Fig. 3

Example of a successful ablation of premature ventricular contractions originating from the distal GCV. a Activation time at the GCV (30 ms before QRS onset). b Pace-map at the GCV demonstrating an excellent match. c Corresponding fluoroscopic view (RAO 30°and LAO 45°) of the ablation catheter (ABL) positions during coronary angiography of the left coronary artery (Additional files 3 and 4: Video S1 and S2). The ablation catheter tip is ≥5 mm distant from any coronary artery. d The anatomical distance from the earliest activation site at the distal GCV to the closest anatomical point at the LCC and the LV endocardium were 24 mm and 9 mm, respectively. ABL d (p), the distal and proximal electrode pairs of the ablation catheter; GCV, great cardiac vein; CS, coronary sinus; RAO, right anterior oblique projection; LAO, left anterior oblique projection; LCC, left coronary cusp, LV, left ventricle

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