1. Volume 11, Issue 1, Pages 34-38 (January 2014)
Novel utility of cryoablation for ventricular arrhythmias arising from the left aortic cusp near the left main coronary artery: A case series 
Kelly McDonnell, DO, Edward Rhee, MD, FACC, Komandoor Srivathsan, MD, Wilber Su, MD, FHRS 
Heart Rhythm 
Volume 11, Issue 1, Pages (January 2014)
DOI: /j.hrthm
Copyright © 2014 Heart Rhythm Society Terms and Conditions

2. Figure 1
Baseline electrocardiogram demonstrating frequent premature ventricular contractions with an inferior axis, positive in leads II, III, and aVF; negative in leads aVR and aVL; and positive in leads V1–V6. This is suggestive of a posterior aortic root origin or aortomitral continuity origin.
Heart Rhythm  , 34-38DOI: ( /j.hrthm )
Copyright © 2014 Heart Rhythm Society Terms and Conditions

3. Figure 2
Three-dimensional activation mapping of the right ventricular outflow tract without evidence of early activation.
Heart Rhythm  , 34-38DOI: ( /j.hrthm )
Copyright © 2014 Heart Rhythm Society Terms and Conditions

4. Figure 3
Three-dimensional mapping demonstrating earliest activation in the aortic cusp near the left main coronary artery (left main, labeled in yellow). The relationship to the right ventricular outflow tract is also demonstrated.
Heart Rhythm  , 34-38DOI: ( /j.hrthm )
Copyright © 2014 Heart Rhythm Society Terms and Conditions

5. Figure 4
Intracardiac recording demonstrating activation >30 ms before premature ventricular contraction on the ablation catheter.
Heart Rhythm  , 34-38DOI: ( /j.hrthm )
Copyright © 2014 Heart Rhythm Society Terms and Conditions

6. Figure 5
Intracardiac echocardiogram demonstrating ablation catheter in the left coronary cusp inferior to the left main coronary artery.
Heart Rhythm  , 34-38DOI: ( /j.hrthm )
Copyright © 2014 Heart Rhythm Society Terms and Conditions

7. Figure 6
Coronary angiography demonstrating relationship of the ablation catheter to the left main coronary artery. The left panel shows the location of the ablation catheter in the aorta. The right panel shows angiography of the left main coronary artery.
Heart Rhythm  , 34-38DOI: ( /j.hrthm )
Copyright © 2014 Heart Rhythm Society Terms and Conditions

8. Figure 7
Three-dimensional mapping demonstrating the relationship of the ablation catheter at the site of earliest activation in relation to the left main coronary during ablation.
Heart Rhythm  , 34-38DOI: ( /j.hrthm )
Copyright © 2014 Heart Rhythm Society Terms and Conditions

9. Figure 8
A: Preprocedure recording with significant ventricular arrhythmia burden that was representative of that obtained on the Holter monitor. B: Postprocedure recording without evidence of ventricular arrhythmia or ectopy after induction studies.
Heart Rhythm  , 34-38DOI: ( /j.hrthm )
Copyright © 2014 Heart Rhythm Society Terms and Conditions