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Updated: Jun 16, 2026

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation
Published on: February 28, 2012
Single-Pocket-Incision Generator Exchange From a Subcutaneous to an Extravascular Implantable
Yoshimi Onishi1,2, Saori Chino1,2, Masaaki Kurata2
1Division of Cardiology, Department of Medicine Showa Medical University Tokyo Japan.
None:
Subcutaneous-to-extravascular implantable cardioverter-defibrillator exchange can create a practical challenge: the existing subcutaneous generator pocket lies posteriorly, whereas the new extravascular generator site is planned more anteriorly. In this case, fluoroscopic planning showed adjacent generator sites, allowing a single intervening pocket incision. Bidirectional dissection enabled subcutaneous generator removal and extravascular pocket creation, while separate deep-layer closure avoided a large continuous pocket and preserved standard extravascular generator positioning.
