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
  1. Lee R. Atrial fibrillation: Surgical ablation. Accessed Nov. 18, 2021.
  2. Ferri FF. Atrial fibrillation. In: Ferri's Clinical Advisor 2022. Elsevier; 2022. Accessed Nov. 18, 2021.
  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. 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