Methods

We identified patients who underwent AVN ablation for different indications at our institution. Data related to patients and procedures were collected through retrospective chart review. The radiofrequency catheters used were: plain non irrigated, externally irrigated (EI), and contact force sensing with 10-20 gm of force in two different settings: low power long duration (LPLD) (30W, 45°C, and 60 sec) and high-power short duration (HPSD) (50W, 43°C, and 12 sec). We compared the different catheters in terms of success rate using logistic regression and lesion time using linear regression.