Maze procedure Overview

Maze is a surgical procedure used to treat an irregular heart rhythm (atrial fibrillation). A surgeon creates a pattern (maze) of scar tissue in the upper chambers of the heart (atria) using a scalpel or a device that delivers heat or cold energy.

Scar tissue doesn't conduct electricity. So the maze interferes with stray electrical heart signals that cause atrial fibrillation.

April 30, 2022
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  3. January CT, et al. 2019 AHA/ACC/HRS focused update of the 2014 AHA/ACC/HRS guideline for the management of patients with atrial fibrillation: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines and the Heart Rhythm Society. Circulation. 2019; doi:10.1161/CIR.0000000000000665.
  4. Ruaengsri C, et al. The Cox-maze IV procedure in its second decade: Still the gold standard? European Journal of Cardio-Thoracic Surgery. 2018; doi:10.1093/ejcts/ezx326.
  5. Bonow RO, et al., eds. Mechanisms of cardiac arrhythmias. In: Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine. 11th ed. Saunders Elsevier; 2019. https://www.clinicalkey.com. Accessed Dec. 26, 2019.
  6. McGilvray MMO, et al. Efficacy of stand-alone Cox-Maze IV procedure in patients with longstanding persistent atrial fibrillation. Journal of Cardiovascular Electrophysiology. 2021; doi:10.1111/jce.15113.

Atrial fibrillation ablation