Totally Endoscopic Robotic Mitral Valve Repair

mitral-valve-anatomy

Mitral Valve Anatomy

The robot is particular helpful for performing mitral valve repair surgery because of the valve’s location in the heart.  Mitral valve repair is often performed for mitral valve regurgitation.  The valve is located in the left atrium which sits posterior to the heart and is most easily approached from the right side of the chest.  This gives the surgeon a straight-on view of the valve. With robotic mitral valve surgery in New York, we are able to see the mitral valve very clearly. The mitral valve has two basic functions: to open and to close.  This keeps blood moving through the heart in the right direction.  If blood flows backward as in mitral valve regurgitation, it can cause problems including shortness of breath, atrial fibrillation, pulmonary hypertension, heart failure, and others.

The mitral valve has two simple jobs: to open and to close.  Failure to close properly can result in the blood going backwards which can lead to symptoms and damage the heart.   Alternatively, the mitral valve can become narrowed (mitral valve stenosis) which can cause blood to back up in the system.   While the mitral valve can be replaced, we don’t have good replacement options.  A mechanical valve can be used with the intent of avoiding further surgery but requires a blood thinner called warfarin (coumadin) and can lead to stroke or bleeding (about 1% chance of each per year).  For this and many other reasons, mitral valve repair is preferred. Many studies have shown improved survival with repair over replacement for prolapsed valves.  There are many causes of mitral valve disease.including mitral valve prolapse, rheumatic disease, coronary artery disease, infection (endocarditis), and others.

Totally Endoscopic Mitral Valve Repair Ports

Robotic Mitral Valve Repair Ports

With a totally endoscopic robotic approach, we make five small incisions are made under the right armpit area usually ranging from 8-15 mm in size (for repair).  The real advantage of this over traditional sternotomy (breastplate division) or non-robotic or robotic “port access” approaches (5-10 cm”mini” right thoracotomy) is that incisions are very small and rib spreading is not needed.  Rib spreading causes pain.  The incisions are so small that no portion of the operation can be done by visualizing through the ports which is how I define “totally endoscopic”.

Animation of Robotic Mitral Valve Repair

 

The other advantage to approaching the valve robotically from the right chest is that the valve and the heart are in their “natural positions” (as opposed to sternotomy where the heart has to be aggressively retracted to expose the valve which I believe makes it easier to repair the valve.  Mitral valve surgeons disagree on many things, but one thing they all agree with is that you have to see the valve well to repair it and I think after you see the videos of the procedures you will agree there is no better exposure of the valve than with the robotic camera and dynamic robotic retractor.

Robotic Mitral Valve Repair Ports

Robotic Mitral Valve Repair Ports

For mitral valve regurgitation (leaky mitral valve), repair is likely in centers that perform a high volume of mitral valve surgery.  In the case of mitral valve prolapse, the chance of repair in such centers is 95-100%.  The robotic technique has been shown in retrospective studies to have a higher repair rate. If replacement is required, a 30-35 mm incision (with a 35mm port) is often necessary to allow us to get the new valve into the chest but there is no rib spreading.  Patients with prior surgery via a sternotomy (breastplate division) can be ideal candidates as the technique avoids most or all of the scar tissue created by the previous operation.

Da Vinci Robotic Surgical System.  Intuitive Surgical, Inc. (©2009 Intuitive Surgical, Inc.

The surgeon can see the valve very well as can all team members participating in the surgery (by looking at TV screens in the OR).  In standard surgery, usually only the surgeon can get a reasonable view.  I think it is easier to expose the valve and see all of it than with traditional approaches. Performing totally endoscopic mitral valve surgery with the robot requires the use of advanced catheter-based techniques for heart-lung bypass and stopping the heart as illustrated here.  The terms Heartport, Thruport, or Port Access have all been used to refer to this technology which is very powerful when combined with robotic technology and an

A catheter system provides heart-lung bypass and keeps the heart protected during the procedure.

A catheter system provides heart-lung bypass and keeps the heart protected during the procedure.

In traditional surgery, the heart is bypassed and stopped during surgery using tubes (cannulae) placed directly in the heart. With our endoscopic robotic approach, this is usually done through blood vessels to the leg (femoral artery and vein) using catheter-based approaches and a small incision.  One additional difference between totally endoscopic robotic mitral valve surgery and other techniques is that it requires much more teamwork in the operating room than most programs can muster.  The era of the “superstar” surgeon is over and the era of the “superstar” surgical team has arrived!  With robotic mitral valve repair in New York, you will benefit from such an approach. The robot can also be used to replace the mitral valve.  Other procedures can be done at the same time including tumor removal, closure of the atrial appendage, MAZE procedure for atrial fibrillation, tricuspid valve repair or replacement, and others.  Patients with HOCM (Hypertrophic Obstructive Cardiomopathy) can also undergo resection of the abnormal muscle blocking flow and repair of the mitral valve with the endoscopic robotic technique.

Below is a video of a robotic totally endoscopic mitral valve repair performed by Dr. Guy

 

Request an appointment online to discuss robotic heart surgery. If no appointments are available quickly enough for your needs, please contact my office at 212-746-9443.

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Personalized Mitral Valve Regurgitation Treatment Guideline Education Tool

Based on 2014 AHA/ACC Guideline for the Management of Patients With Valvular Heart Disease. (Circulation 2014 Jun 10;129(23):e521-643.).
This tool is not designed to and does not provide specific medical advice, professional diagnosis, opinion, treatment or services to you or to any other individual.

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T. Sloane Guy, MD, MBA
Weill Cornell Medicine/New York Presbyterian Hospital
525 East 68th Street
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(212) 746-9443
Location: T. Sloane Guy, MD, Weill-Cornell Medicine/NewYork-Presbyterian Hospital

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Weill Cornell Medicine Robotic Heart Surgery

Weill Cornell Medicine Robotic Heart Surgery

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T. Sloane Guy, MD

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