Combined analysis of unipolar and bipolar voltage mapping identifies recurrences after unmappable scar-related ventricular tachycardia ablation

Scars causing ventricular tachycardia can extend deep to and beyond bipolar low-voltage areas (LVAs) and they may be a reason for endocardial ablation failure. Analysis of endocardial unipolar voltage maps has been used to detect scar transmurality and epicardial scar. We hypothesized that endocardi...

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Bibliographic Details
Published in:Europace (London, England) England), 2015-10, Vol.17 (10), p.1580-1586
Main Authors: Yalin, Kivanc, Golcuk, Ebru, Bilge, Ahmet Kaya, Aksu, Tolga, Buyukbayrak, Hakan, Tiryakioglu, Selma Kenar, Emet, Samim, Adalet, Kamil
Format: Article
Language:English
Subjects:
Adult
Body Surface Potential Mapping - methods
Catheter Ablation - methods
Cicatrix - physiopathology
Endocardium - physiopathology
Female
Humans
Male
Middle Aged
Pilot Projects
Recurrence
Retrospective Studies
ROC Curve
Tachycardia, Ventricular - diagnosis
Tachycardia, Ventricular - surgery
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Summary:Scars causing ventricular tachycardia can extend deep to and beyond bipolar low-voltage areas (LVAs) and they may be a reason for endocardial ablation failure. Analysis of endocardial unipolar voltage maps has been used to detect scar transmurality and epicardial scar. We hypothesized that endocardial unipolar LVA around the overlying bipolar LVA may predict endocardial ablation recurrence in patients with structural heart disease undergoing substrate modification. Twenty consecutive patients with structural heart disease (11 ischaemic and 9 non-ischaemic cardiomyopathy) and undergoing substrate modification due to unmappable ventricular tachycardia (VT) (18 males, 51 ± 11 age, LVEF: 36 ± 7%) were retrospectively reviewed. Bipolar LVA defined as
ISSN:1099-5129
1532-2092
DOI:10.1093/europace/euv013