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Heart Rhythm. 2014 Jul;11(7):1117-21. doi: 10.1016/j.hrthm.2014.04.019. Epub 2014 Apr 13.

Safety of radiofrequency catheter ablation without coronary angiography in aortic cusp ventricular arrhythmias.

Author information

1
Division of Cardiology, Section of Electrophysiology, University of Wisconsin, Madison, Wisconsin.
2
Division of Cardiology, Section of Electrophysiology, University of California, San Francisco, California.
3
Division of Cardiology, Section of Electrophysiology, University of California, San Francisco, California. Electronic address: egerstenfeld@medicine.ucsf.edu.

Abstract

BACKGROUND:

Ventricular arrhythmias (VAs) originating from the aortic root are common. Coronary angiography is typically recommended before catheter ablation to document proximity of the ablation catheter to the coronary ostia.

OBJECTIVE:

To investigate how often catheter ablation in the aortic root could be guided by phased-array intracardiac echocardiography (ICE) and electroanatomic mapping without requiring aortography or coronary angiography.

METHODS:

We reviewed consecutive patients referred for aortic root VAs to operators experienced in the use of ICE at a single center. An ICE catheter and a 3.5-mm irrigated ablation catheter were used in all cases, and the need for angiography before ablation was documented. Acute success and acute and 30-day complications were noted.

RESULTS:

Thirty-five patients (age 58 ± 13 years; 74% men) were referred for the ablation of VAs; 32 of 35 (91%) underwent ablation using ICE and 3-dimensional mapping without the need for coronary angiography. Successful acute ablation was achieved in 29 of 35 (83%) patients. In all cases, the catheter tip was directly visualized with ICE >1 cm from the coronary ostia. The site of origin of the earliest VA was the left cusp (17 of 35 [49%]), right cusp (9 of 35 [26%]), right-left cusp junction (8 of 35 [23%]), or right-noncoronary cusp junction (1 of 35 [3%]). There were no cases of coronary injury, embolic stroke, aortic root perforation, worsening of aortic regurgitation, or death acutely or at 30 days.

CONCLUSION:

Radiofrequency ablation of VAs originating from the aortic root may be safely performed using ICE and electroanatomic mapping in the majority of cases without the need for coronary angiography.

KEYWORDS:

Aortic cusp; Catheter ablation; Premature ventricular contractions; Ventricular tachycardia

PMID:
24732373
DOI:
10.1016/j.hrthm.2014.04.019
[Indexed for MEDLINE]

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