PMC9108180_01
Twelve-lead electrocardiogram displaying premature ventricular contractions.
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F1
Before the ablation, a 12-lead electrocardiogram showed frequent PVCs (Figure 1). PVCs were demonstrated in the great cardiac vein, and then the catheter was positioned (Figure 2 and Supplementary Video 1).
X-ray confirming blood circulation in the great cardiac vein.
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F2
PVCs were demonstrated in the great cardiac vein, and then the catheter was positioned (Figure 2 and Supplementary Video 1). A venogram was immediately manipulated to confirm great cardiac vein flow and rule out cardiac tamponade (Figure 2).