Thermodynamic properties of atrial fibrillation cryoablation: a model-based approach to improve knowledge on energy delivery.

ABSTRACT: The objective of this study is to describe a suitable model of atrial fibrillation cryoablation thermodynamic properties. Three different thermal loads were applied to a cylindrical copper element simulating the cryoprobe, thermally coupled with a Peltier stack producing the freezing effect, and in contact with a bovine liver sample. Thermal events occurring inside the samples were measured using mirror image technique. Heat subtracted flux during ice formation and minimum temperature measured at probe-tissue interface were, respectively, 1.33 W cm^-2 and -27.8°C for Sample#0, 1.88 W cm^-2 and -35.6°C for Sample#1 and 1.82 W cm^-2 and 1.44 W cm^-2 before and after the ice trigger, respectively, and -29.3°C for Sample#2. Ice trigger temperature was ar

SUBMITTER: Giaretto V 

PROVIDER: S-EPMC6769315 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature