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Reversible Mechanical Atrioventricular Block Caused by A Steerable Introducer Sheath During Transseptal Catheterization

A 62-year-old woman presents for pulmonary vein isolation (PVI) for paroxysmal atrial fibrillation. During transseptal catheterization (TSC) the patient sustained mechanical injury to the atrioventricular node (AVN) with consequent complete heart block (CHB). Injury to the AVN and CHB recovered after approximately forty minutes. The patient subsequently underwent a successful PVI with the remainder of the hospital stay uneventful. We present a case of reversible injury to the AVN caused by a steerable introducer sheath during TSC and discuss the mechanisms of injury as well as potential measures to avoid such a complication in the future.

Credits: Gregory P. Siroky, Devendra Bisht, Hieu Huynh, Mena Yacoub, Shawn Lee, Seth Keller, Ranjit Suri

Biosense Webster
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Introduction to AFib
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