Yes. It's called ATP. AntiTachycardia Pacing. It's used to prevent shocks and works well for VT. how the device is programmed will determine how many rounds of ATP the device will give prior to...
I agree with the other posts. The EP doc is going to be making the decision on which device he or she is going to use. Each of the major three (St. Jude, Boston, and Medtronic) have different...