Catheter cryoablation of supraventricular tachycardia: results of the multicenter prospective "frosty" trial.

Objective: To study the safety, efficacy, and mapping utility of a new cryoablation catheter.

Background: The CryoCath Technologies Freezor catheter has been used successfully for cryoablation of supraventricular tachycardia (SVT), but has not been evaluated in a large clinical trial.

Methods: A multicenter clinical trial to evaluate the safety, efficacy, and cryomapping utility of this cryoablation catheter was conducted in 166 subjects.