Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

Fascicular ventricular tachycardia (FVT) is a well recognised tachycardia mechanism arising from the LV. We report the use of a non-contact multielectrode array (MEA) to construct isopotential maps of the left ventricular endocardial activation pattern during fascicular tachycardia in 3 pts (2m aged 34, 48, and 54yrs). The MEA allows reconstruction of 3360 unipolar electrograms which are superimposed on a 3-dimensional model of the LV. The earliest activation point on the LV endocardium during tachycardia was identified. Using a combination of fluoroscopy and software which allows ablation catheter-tip localisation relative to the isopotential map {MEA reference electrodes) a standard RF ablation catheter tip was manipulated to that point. In all 3 pts a fascicular potential was identified at that site. Application of radiofrequency energy to the site lead to abolition of FVT which remained non-inducible for 1 hour after RF application. Procedure times were 67, 78 and 98 mins. Fluoroscopy times were 20, 22 and 25 mins. Conclusion: Non-contact mapping of FVT facilitates rapid and successful RF catheter ablation of this tachycardia substrate.

Type

Journal article

Journal

Heart

Publication Date

01/05/1999

Volume

81