Blood damage, platelet and clotting activation during application of radiofrequency or cryoablation catheters: a comparative in vitro study.

During catheter ablation of cardiac tissue, the insulting stimulus may damage and activate the blood. Specifically activation of platelets and the clotting system is a potential risk by their formation of thrombi. In this study the effect of two different techniques, a radiofrequency and a cryo-application procedure, on the activation of platelets and clotting in an in vitro blood circulation model was investigated.