Tissue characterization to identify an ablation site
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United States of America Patent
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Jul 11, 2000
Grant Date -
N/A
app pub date -
Mar 31, 1997
filing date -
Mar 31, 1997
priority date (Note) -
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Abstract
Heart tissue near the surface of the heart is characterized to identify a potential site to ablate to treat reentrant ventricular tachycardia. Signals from the surface of the heart are recorded during an episode of ventricular tachycardia to determine whether a reentrant pathway lies near the surface of the heart. Entrainment pacing is employed to identify a potential ablation site near the slow conduction zone of the reentrant pathway. Heart tissue is ablated by creating a lesion with a large surface area and a shallow depth to destroy the slow conduction zone.
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