There are pluses and
minuses to both cryo and
RF -- cryo is less thrombogenic, the lesions are more controllable and
, as you noted, can sometimes be reversed so is often used near the "natural" pacemaker areas of the heart. I believe cryo is also less "painful" both during the procedure and
in recovery than RF. However, cryo generally takes quite a bit longer, which adds to procedure times and
has a slightly lower overall long-term success rate.