Surgical Removal of a Pacemaker Lead Entrapped by a Chiari Network: A Case Report.

Content Provider	Europe PMC
Author	Sakai, Takenori Sato, Yoshimi Kawasaki, Tatsuya Takahashi, Hideki
Copyright Year	2021
Abstract	The Chiari network, one of the remnants of the right valve of the sinus venosus, is considered clinically insignificant in most cases but attention should be paid since this embryological remnant can be a potential risk for complications during procedures. We report a case of atrioventricular block in which a pacemaker lead was entrapped by a Chiari network. A 78-year-old woman underwent dual-chamber pacemaker implantation for symptomatic 2:1 atrioventricular block. A tined J-shaped atrial lead was placed at the right atrial appendage, which later became dislodged to a lower position and entrapped. After multiple unsuccessful attempts to withdraw the lead, surgical removal was performed. The lead was strictly entangled within the fibrous threads of the Chiari network that was not detected by transthoracic echocardiography before and during the implantation.
Related Links	https://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC8383591&blobtype=pdf
ISSN	19234155
Journal	Journal of Medical Cases [J Med Cases]
Volume Number	12
DOI	10.14740/jmc3708
PubMed Central reference number	PMC8383591
Issue Number	8
PubMed reference number	34434481
e-ISSN	19234163
Language	English
Publisher	Elmer Press
Publisher Date	2021-07-03
Access Restriction	Open
Rights License	This article is distributed under the terms of the Creative Commons Attribution Non-Commercial 4.0 International License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Copyright 2021, Sakai et al.
Subject Keyword	Chiari network Complication Echocardiography Lead Pacemaker
Content Type	Text
Resource Type	Article
Subject	Medicine