Minimally Invasive TT Maze Surgery Advances AFib Treatment

Keck Medicine of USC cardiothoracic surgeon Jonathan Praeger, MD, explains how a less-invasive approach to epicardial ablation helps resolve longstanding persistent AFib.

By
October 6, 2026
7 min

Keck Medicine of USC

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Minimally invasive totally thoracoscopic (TT) maze surgery improves outcomes for patients with longstanding persistent atrial fibrillation (AFib).
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Endocardial ablation is less effective for longstanding persistent AFib due to complex mechanisms involving remodeling and fibrosis in the atrium.
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The TT maze procedure involves small incisions and uses radiofrequency to isolate pulmonary veins and address sources of persistent AFib.
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Patients undergoing TT maze typically experience minimal pain and a short hospital stay, with many returning home after two nights.
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Awareness and training in TT maze surgery are limited among clinicians, impacting its availability for patients with longstanding persistent AFib.

Minimally Invasive TT Maze Surgery Advances AFib Treatment

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Original Source(s)

Minimally Invasive TT Maze Surgery Advances AFib Treatment

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