Outcome:
1. Acute: 83.7% achieved acute termination of the flutter during the ablation, and the rest required electrical cardioversion to achieve sinus status at the end of the ablation. The recurrence-free survival rate was not significantly different based on acute termination status (p = 0.11), as mentioned in Figure 2 . Acute termination and lack of inducibility are the common standards to determine success in the EP lab, particularly for reentrant arrhythmia[8,9,10] . The most important finding is that the index macroreentrant arrhythmia’s termination does not predict recurrence-free survival. Lack of inducibility is not an indicator of recurrence-free survival is another significant finding as it is commonly used as an endpoint for ablation.