Table 2.

Guidance for selection of RotaWires

Characteristics or specific situations	RotaWire floppy or extra-support
Ability to ablate the severely calcified plaques (ablation efficiency)	Extra-support > floppy
Ability to straighten the tortuous coronary artery	Extra-support > floppy
Ability to strengthen the back-up force in the system	Extra-support > floppy
When pre-intravascular imaging devices cross the lesion and provide sufficient information regarding the guidewire bias	Select either Extra-support or floppy according to the information from imaging devices and angiography
When operators cannot judge the guidewire bias from angiography and/or intravascular imaging	Floppy first
When junior RA operators cannot understand which RotaWires are more suitable to the lesion	Floppy first
When the burr cannot cross the lesion, the exchange from floppy to extra-support	May work well, because of the change of the contact point. However, the strong guidewire bias may cause deep ablation
When the burr cannot cross the lesion, the exchange from extra-support to floppy	May work well, because of the change of the contact point