Conclusion 
CVS patients presenting with ventricular arrhythmias frequently continue to be treated medically with no device therapy. Our observation stresses on two issues. First, coronary spasm can be responsible for SCD. Second, a specific “shark fin” pattern on ECG may predict an arrhythmogenic propensity. Prompt recognition of this pattern while managing CVS patients and CVS-related ventricular arrhythmias should lower the ICD implantation threshold.
Conflict of interest: The Authors declare that there is no conflict of interest.