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Outcomes of rescue cardiopulmonary support for periprocedural acute hemodynamic decompensation in patients undergoing catheter ablation of electrical storm.

Abstract：

BACKGROUND:In patients with ventricular tachycardia or ventricular fibrillation (VT/VF) electrical storm (ES) undergoing catheter ablation (CA), hypotension due to refractory VT/VF, use of anesthesia, and cardiac stunning due to repeated implantable cardioverter-defibrillator shocks might precipitate acute hemodynamic decompensation (AHD). OBJECTIVE:We evaluated the outcomes of emergent cardiopulmonary support with extracorporeal membrane oxygenation (ECMO) to rescue AHD in patients undergoing CA of ES. METHODS:Between January 1, 2010 and December 31, 2016, 21 patients with ES (VT in 11 and premature ventricular complex-triggered VF in 10) were referred for CA and had periprocedural AHD requiring emergent ECMO support. RESULTS:In 14 patients, AHD occurred a mean of 1.5 ± 1.7 days before the procedure. In the remaining 7 patients, AHD occurred during or shortly after the procedure. ECMO was started successfully in all patients. Ablation was performed in 18 patients (9 with VF and 9 with VT). In patients with VF, premature ventricular complex suppression was achieved in 8 of 9 (89%). In those with VT, noninducibility was achieved in 7 of 9 (78%). After a median follow-up of 10 days, 16 patients died (13 during the index admission). Death was due to refractory VT/VF in 4 patients, heart failure in 11, and noncardiac cause in 1 patient. Seven patients survived beyond 6 months postablation; 5 remained free of VT/VF and 3 ultimately received a destination therapy (heart transplantation in 2 and left ventricular [LV] assist device in 1). CONCLUSION:In patients with ES undergoing CA, the outcomes of ECMO support as rescue intervention for AHD are poor. The majority of these patients die of refractory heart failure in the short-term. Strategies to prevent AHD including preemptive use of hemodynamic support may improve survival.

journal_name

Heart Rhythm

journal_title

Heart rhythm

authors

Enriquez A,Liang J,Gentile J,Schaller RD,Supple GE,Frankel DS,Garcia FC,Wald J,Birati EY,Rame JE,Bermudez C,Callans DJ,Marchlinski FE,Santangeli P

doi

10.1016/j.hrthm.2017.09.005

subject

Has Abstract

pub_date

2018-01-01 00:00:00

pages

75-80

issue

1

eissn

1547-5271

issn

1556-3871

pii

S1547-5271(17)31084-6

journal_volume

15

pub_type

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