Human Left Ventricular Endocardial Activation Mapping Using a Novel Noncontact Catheter
1997
The patient was a 39-year-old male who had recurrent sustained monomorphic ventricular tachycardia, satisfying the electrocardiographic criteria for fascicular tachycardia, in a structurally normal heart.
These isopotential maps were acquired from the patient’s left ventricle during an otherwise routine electrophysiology study by deploying a catheter-mounted multielectrode array consisting of a wire braid on the surface of an 8-mL balloon (Endocardial Solutions Inc). Without endocardial contact, this system uses inverse solution mathematics (boundary-element method) to reconstruct 3360 “virtual” electrograms onto a shell model of the endocardium. A manually selected line of virtual electrograms shows a …
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