COR	LOE	Recommendations	References
I	C‐EO	1. In select patients at risk of requiring HS, a decision to proceed with catheter ablation of VA should be made in collaboration with specialists in advanced heart failure management.
IIa	B‐NR	2. In select patients, HS with a percutaneous VAD and extracorporeal membrane oxygenation during VT ablation can be useful to avoid acute hemodynamic deterioration.	S6.4.1–S6.4.7
IIb	B‐NR	3. Mechanical HS may be considered in select cases to allow mapping and ablation of unstable VTs.	S6.4.1–S6.4.6