Anatomy and Physiologic Roles of the Left Atrial Appendage: Implications for Endocardial and Epicardial Device Closure

Nicholas Y. Tan, Omar Z. Yasin, Alan Sugrue, Abdallah El Sabbagh, Thomas A. Foley, Samuel J Asirvatham

Research output: Contribution to journalReview article

3 Scopus citations

Abstract

The left atrial appendage has been implicated as a major nidus for thrombus formation, particularly in atrial fibrillation. This discovery has prompted substantial interest in the development of left atrial appendage exclusion devices aimed at decreasing systemic thromboembolism risk. Its deceptively simple appearance belies the remarkable complexity that characterizes its anatomy and physiology. We highlight the key anatomic features and variations of the left atrial appendage as well as its relationships with surrounding structures. We also summarize crucial anatomic factors that should be taken into account by the interventional cardiologist when planning for or performing left atrial appendage exclusion procedures.

Original languageEnglish (US)
Pages (from-to)185-199
Number of pages15
JournalInterventional Cardiology Clinics
Volume7
Issue number2
DOIs
StatePublished - Apr 1 2018

Keywords

  • Amplatzer cardiac plug
  • Atrial fibrillation
  • Lariat approach
  • Left atrial appendage anatomy
  • Percutaneous device closure
  • Watchman device

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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