PO-05-070 ENDOCARDIAL RADIOFREQUENCY ABLATION OF VT STORM IN CARDIOGENIC SHOCK PATIENTS WITH MECHANICAL CIRCULATORY SUPPORT

Ventricular tachycardia (VT) storm in the setting of cardiogenic shock requiring mechanical support (MCS) carries a high mortality rate. Limited data exist literature using VT ablation as treatment strategy this cohort patients. We aim to evaluate outcome patients receiving complicated by MCS, well assess predictors for poor outcomes. This is single-center, retrospective study with refractory and on undergoing endocardial from 2015 2022. Complete substrate isolation output pacing within scar, followed stimulation protocols, was used confirm success ablation. Patients’ demographic obtained chart review. The PAINESD score, scoring system predict early post-procedural ablation, calculated each patient. Peak lactate levels recorded during procedure preoperative invasive hemodynamic measurements were also taken into consideration. A total 37 concomitant MCS included. average age 61.7 years old, 94.7% men, mean left ventricular ejection fraction 17.3%, score 24.9. type utilized listed Table 1. Twenty-one discharged alive, 8 (21.6%) long-term LVAD support, 13 (35.1%) after weaning while 16 (43.2%) didn’t survive index hospitalization (Figure 1). between those who survived died not significantly different (25.3 vs. 24.3, p = 0.31). survivor group had higher rate (76.2% 35.3%, p=0.018), pulmonary artery pulsatility (PAPI) (2.7 1.4, 0.005), lower intraoperative peak lactic acid level (1.1 3.5 mmol/L, 0.027). Ablation medication arrhythmia efficacious facilitating large proportion cohort. absence right dysfunction measured PAPI, level, acute success, inducibility at end procedure, short-term outcome, demonstrated weak differentiating power moribund, high-risk