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Advanced helix-fixation leadless cardiac pacemaker implantation techniques to improve success and reduce complications.
Journal of Cardiovascular Electrophysiology 2023 May 2
INTRODUCTION: Leadless cardiac pacemakers (LCPs) are becoming more commonly utilized because of their potential advantages (i.e., reduced short and long-term complications, improved patient comfort) and may be the preferred option for patients with venous access problems, high-risk for infection, previous lead fractures, or skin erosion. There are currently two types of LCP fixation mechanisms that have been FDA approved-Medtronic's Micra system has a tine-based fixation and Abbott's Aveir system has a helix-fixation design. This article highlights important tips and tricks for a successful implant of a helix-fixation LCP, particularly when difficulties are encountered, and provides precautions to avoid potential complications.
METHODS: Cases of single chamber Aveir LCP implantation were reviewed to highlight examples of procedural pitfalls and suggested methods to circumnavigate them.
RESULTS: There are unique procedural considerations regarding the Aveir LCP implant as well as challenges that that may be occasionally encountered. Techniques to address these-such as avoiding air embolism, maneuvering difficult entry into the right ventricle, handling complicated positioning/repositioning, evaluating proper fixation, and releasing difficult tethers-are illustrated in detail. Advice to reduce risks of perforation and to position optimally for potential retrieval and communication for dual chamber pacing are also described.
CONCLUSIONS: The advanced teaching concepts described and emphasized in this article may help improve success and prevent procedural complications, especially when physicians are learning how implant these novel helix-fixation LCPs.
METHODS: Cases of single chamber Aveir LCP implantation were reviewed to highlight examples of procedural pitfalls and suggested methods to circumnavigate them.
RESULTS: There are unique procedural considerations regarding the Aveir LCP implant as well as challenges that that may be occasionally encountered. Techniques to address these-such as avoiding air embolism, maneuvering difficult entry into the right ventricle, handling complicated positioning/repositioning, evaluating proper fixation, and releasing difficult tethers-are illustrated in detail. Advice to reduce risks of perforation and to position optimally for potential retrieval and communication for dual chamber pacing are also described.
CONCLUSIONS: The advanced teaching concepts described and emphasized in this article may help improve success and prevent procedural complications, especially when physicians are learning how implant these novel helix-fixation LCPs.
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