The Maze procedure is a surgery that helps relieve a rapid, irregular heart rhythm (atrial fibrillation). Your doctor may suggest surgery if the irregular rhythm can not be prevented by medication or other medical treatments.

This surgical procedure is usually performed with another open-heart surgery. It gets its name from the marks made in the upper chambers of the heart during the procedure that look like a maze.

If the atrial fibrillation is happening sporadically, the surgery can be 80% effective in maintaining a normal rhythm. If the atrial fibrillation is chronic, the surgery is approximately 60% effective.

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Go here to learn more about what to expect during and after open-heart surgery.