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Comment & Response
April 2019

AV Nodal Wenckebach Masquerading as Infra-His Wenckebach Due to Intra-atrial Conduction Delay

Author Affiliations
  • 1The Heart Group of Lancaster General Health/Penn Medicine, Lancaster, Pennsylvania
JAMA Intern Med. 2019;179(4):587-588. doi:10.1001/jamainternmed.2018.8630

To the Editor I read with interest the article “Syncope With Bifascicular Block Due to Infra-Hisian Wenckebach Conduction abnormality” by Pham et al,1 describing a patient presenting with syncope and bifascicular block who underwent electrophysiology study. The report describes the unusual phenomenon of intra-Hisian AV Wenckebach and posited this as the cause of syncope.

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