Limitations
We acknowledge several limitations, some of which are inherent to the retrospective analysis. First, the sample size included in the study was small. However, given the limited data in literature about this specific population, our sample size is one of the biggest for this category of patients. As this is a single-center analysis, results may not be generalizable. Also, our patients tend to be referred to us late after multiple failed therapeutic trials, which could affect the findings. We were unable to determine the cause of death in 2 patients. Therefore, we cannot exclude recurrent ventricular arrhythmia as the cause of death in these patients.