Journal
HERZ
Volume 46, Issue 6, Pages 526-532Publisher
URBAN & VOGEL
DOI: 10.1007/s00059-021-05074-7
Keywords
Cardiac resynchronization therapy; Hemodynamics; Heart failure; Leadless pacing; Conduction system pacing
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Funding
- King's College London
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Endocardial left ventricular (LV) pacing is an alternative therapy for patients with heart failure who do not respond to conventional CRT. It offers advantages such as pacing at various sites without anatomical restrictions, and evidence suggests superior electrical resynchronization and hemodynamic response compared to epicardial CRT.
Cardiac resynchronization therapy (CRT) is an effective treatment for dyssynchronous heart failure; however, 30-50% of patients fail to improve after implant. Endocardial left ventricular (LV) pacing is an alternative therapy for patients who do not respond to conventional CRT or in whom placement of a lead via the coronary sinus is not possible. It enables pacing at a wide variety of sites, without restrictions due to coronary sinus anatomy, and there is evidence of superior electrical resynchronization and hemodynamic response compared with conventional epicardial CRT. In this article, we discuss the potential advantages and disadvantages of endocardial LV pacing compared with conventional CRT, review the evidence for the delivery of endocardial LV pacing using both lead-based and leadless systems, and explore possible future directions of this novel technology.
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