Wolf Mini Maze for Atrial Fibrillation (AFib) Treatment

At Houston Methodist DeBakey Heart & Vascular Center, we offer a unique approach to treating atrial fibrillation, a common heart rhythm disorder affecting more than 10 million people in the U.S. Developed by cardiothoracic surgeon Randall K. Wolf, MD, the Wolf Mini Maze procedure is a minimally invasive surgical treatment designed to stabilize heart rhythm, get patients off blood thinners and significantly reduce stroke risk. In collaboration with a specialized team of cardiovascular and electrophysiology experts, Dr. Wolf has performed this procedure on thousands of patients, including many who had lived with persistent AFib for years.

About the Wolf Mini Maze

The Wolf Mini Maze procedure was developed after decades of research focused on the role of the nervous system in triggering atrial fibrillation. The procedure is performed through two small incisions between the ribs and involves two key components: partial cardiac denervation and left atrial appendage closure.

  • What is partial cardiac denervation?

    Your heart rhythm is influenced by signals from the autonomic nervous system — the same system that increases your heart rate during stress or excitement. In some people, excessive or imbalanced nerve input can contribute to AFib. The Wolf Mini Maze procedure reduces abnormal nerve stimulation on the outside of the heart. By decreasing these triggers, heart rhythm is stabilized — without extensive internal scarring.
  • Why close the left atrial appendage?

    Most AFib-related strokes originate in a small pouch of the heart called the left atrial appendage. Once this pouch is closed during the Wolf Mini Maze, the risk of blood clots and stroke is substantially reduced, and many patients can discontinue using blood thinners (also called anticoagulants).
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AFib Treatment Options: Wolf Mini Maze Versus Catheter Ablation

AFib is not the same for everyone. While some people experience occasional episodes, others remain in continuous AFib. Over time, AFib can increase the risk of stroke, heart failure and diminished quality of life, making the right treatment imperative. At Houston Methodist, our experts consult with you to determine the best care options for your unique circumstances, offering comprehensive and flexible AFib treatment plans.

 

Traditional treatment options may include lifelong medication or the need for multiple catheter-based ablation procedures. Both catheter ablation (also known as cardiac ablation) and the Wolf Mini Maze are minimally invasive procedures that aim to treat atrial fibrillation — but they approach the problem very differently. For some patients, catheter ablation remains the most appropriate first-line treatment. For certain patients, particularly those with enlarged atria or long-standing continuous AFib, the Wolf Mini Maze procedure may offer improved long-term results.

Catheter Ablation

  • Targets the inside of the heart
  • Creates scar tissue in order to block abnormal electrical signals
  • Is often effective for early or intermittent AFib
  • May require multiple rounds of treatment

Wolf Mini Maze Procedure

  • Targets the outside of the heart
  • Decreases the number of autonomic nerves stimulating the heart
  • Includes closure of the left atrial appendage, which has shown a 97% reduction risk of blood clots and stroke
  • On average, more than 90% of patients who undergo the Wolf Mini Maze maintain normal sinus rhythm
  • Patients can often discontinue blood thinner medications after the procedure
 

Who Is a Candidate for the Wolf Mini Maze?

Seeking a consultation for the Wolf Mini Maze procedure does not commit you to surgery. The duration of your condition, the size of your heart’s chambers — particularly the left atrium — and whether you are continuously or intermittently out of rhythm all influence which treatment may be most effective.

 

At Houston Methodist, we carefully evaluate your diagnosis, heart-rhythm history and imaging, while collaborating across specialties to ensure you receive the most appropriate care based on your unique circumstances. If we determine another therapy may be more effective for you, we will discuss it with you. We are here to help you understand your options, reduce your risk and reclaim confidence in your heart rhythm.

 

Ranked #14 in the Nation for Cardiology, Heart & Vascular Surgery


Houston Methodist Hospital is ranked Best in Texas and No. 14 in the nation by U.S. News & World Report for Cardiology, Heart & Vascular Surgery. U.S. News & World Report has also named Houston Methodist Hospital one of the nation's best as a nationally ranked Honor Roll hospital.

 

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Why Choose Houston Methodist for Your AFib Treatment

We are committed to thorough, continuous partnership in your heart care. On average, more than 90% of patients treated for AFib using the Wolf Mini Maze remain in stable rhythm for years, even decades. Our healthcare team aims to help you make the most informed decision for your heart health and return to an active, fulfilling life — without atrial fibrillation.
Personalized Approach to Your AFib Journey

Expert evaluation and patient-centered collaboration

Treating AFib effectively involves more than a single procedure. At Houston Methodist, we:

 

  • Are transparent about your treatment candidacy and alternatives
  • Collaborate closely with cardiac electrophysiologists
  • Complete a thorough review of your personal imaging, health and rhythm history
  • Prioritize your knowledgeable and informed decision-making
  • Provide evaluations and second opinions, often virtually, if you are traveling across the country or internationally
Continuous Support for Comprehensive Care

Successful treatment and attentive follow-up

During surgery, you may receive a small, subcutaneous heart monitor that tracks your rhythm daily for up to five years. This allows our team to confirm long-term rhythm stability, detect early recurrence (if it occurs), and provide evidence-based follow-up care. We even offer virtual pre-op and follow-up visits, for patients who live far from Houston Methodist or who simply prefer the added convenience.

Wolf Mini Maze Treatment for AFib

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    Patient Stories

    If you are living with AFib, we understand you may also be living with fatigue, anxiety about stroke risk and frustration with repeated procedures. The Wolf Mini Maze procedure means more than restoring heart rhythm control. It means returning to ordinary life.

     

    Hundreds of patients have described that they can once more travel confidently, train for marathons, mountain bike, even skydive — or simply take long walks and climb stairs without fear of exhaustion, irregular heartbeats or stroke. Through educational webcasts, patient stories and community resources, individuals share their experiences with AFib and life after treatment at Houston Methodist.

    Michael's patient story
    Patient Story - Dr. Ozner (Cardiologist)
    Seth's patient story
    Patient Story - Dr. Evans (Surgeon)
    Trent's patient story
    Patient Story – Trent A.

    Frequently Asked Questions

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