Dr. Guy interviewed on New York Fox 5 News

Dr. Sloane Guy, Robotic Mitral Valve Surgeon, Fox 5 New York

Dr. Guy leads national symposium in robotic mitral valve repair

Dr. Guy leads national symposium in robotic mitral valve repair

Dr. Guy a New York Magazine “Best Doctor”

Dr. Sloane Guy, robotic heart surgeon,  named one of New York Magazine 2016 "Best Doctors"

Dr. Guy a US News & World Report Top Doc

Dr. Sloane Guy, robotic heart surgeon, a US News & World Report Top Doc

Dr. Guy named Top Doc by Castle Connolly

Dr. Sloane Guy, robotic heart surgeon, named Top Doc by Castle Connolly

Dr. Guy is a Fellow of the American College of Surgeons

T. Sloane Guy, MD, FACS

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Dr. Guy featured on heartvalvesurgery.com

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Sloane Guy Robotic Mitral Valve Surgeon

What is Robotic Heart Surgery and Robotic Mitral Valve Surgery All About?

Here you can learn about robotic heart surgery and robotic mitral valve surgery.  Traditionally, heart surgery is performed by dividing the breastplate with a saw (sternotomy).  Minimally invasive heart surgery is where smaller incisions are made to perform the same operations. Robotic heart surgery is a form of minimally invasive heart surgery that uses the more dexterous robotic instruments and a robotically controlled 3D camera to perform surgery through very small incisions with a degree of precision and visualization that would be difficult or impossible without them.

Although results vary for individuals, the endoscopic robotic approach may allow patients to return to normal activity faster than with sternotomy!  An example of a commonly performed robotic operation that we perform is totally endoscopic robotic mitral valve repair.  The robotic system is particularly useful for this problem as it allows for excellent visualization for mitral valve repair.

Robotic Mitral Repair Patient Operated on by Dr. Sloane Guy

Robotic mitral valve repair patient. Recovery time varies but this shows what is possible. Posted with permission of the patient.

Robotic instruments have the same dexterity and range of motion of a surgeon’s hands but are much smaller (maximum of 8 mm in diameter). Also, the robotic system helps to smooth out the surgeon’s hand and finger motion by using a “fly by wire” type of approach similar to that used in modern jet aircraft. In other words, things like a tremor can affect the movements of a surgeon’s hand, however these types of unwanted movements are eliminated by the use of the robotic system. Additionally, the ability to precisely control the high definition 3D camera of the robotic system and steer it easily into position along with a small robot-controlled surgical retractor allows for excellent visualization.

Cornell/NYPH Robotic Heart Team. This high performance team routinely performs totally endoscopic robotic mitral valve repairs in addition to other procedures.

Weill Cornell Medicine/New York Presbyterian Robotic Cardiac Surgery Team

Precision Robotic Surgical Procedures Require a Team Approach and Experience

To perform robotic heart surgery, a highly trained and experienced surgeon and equally experienced team is required. Just like a pit crew in racing, this team must function together flawlessly to achieve a high level of performance. With robotics, the surgeon sits at a console in the operating room controlling the instruments while looking at a high-definition 3D image from the camera inside the patient. The surgeon controls the robot at all times. It does not do anything without the surgeon directing it (just as a pilot controls an airplane).

Listen to Dr. Guy speak about robotic mitral valve repair

Learn from this website what robotic mitral valve surgery and other types of robotic heart surgery procedures are all about! Procedures that can be performed robotically include:  mitral valve repair, maze procedures to treat atrial fibrillation, atrial septal defect closure, atrial myxoma removal, tricuspid valve repair, septal myectomy for hypertrophic cardiomyopathy, coronary artery bypass, pacemaker lead insertion, and others.

Types of Heart Surgery that can be Performed Robotically

Endoscopic Robotic Mitral Valve Repair

Example of a mitral valve repair

Example of a mitral valve repair

Mitral valve repair is particularly amenable to the robotic approach because the mitral valve is inside a small chamber in the heart (the left atrium) and is most easily seen from the right side of the chest.  The robotic system allows the surgery to navigate into this small space and see clearly because of the high definition robotic camera.  Also, the extreme dexterity and freedom of movement of the robotic instruments allows the surgeon to perform complex mitral valve repair techniques.

Animation of Robotic Mitral Valve Repair Surgery


The most important factors in selecting a center for robotic heart surgery is training and experience. Recent media reports have expressed appropriate concern over the safety of robotics by surgeons and teams that are inadequately trained and prepared for these advanced procedures. I have spent over a decade focusing on mastering robotic surgery gaining enormous) experience at every level including extensive formal and informal robotic cardiac surgery.

Another issue to be aware of is that many hospitals and surgeons claim to do robotic heart surgery, but very few are doing it routinely and exclusively through tiny incisions. I mostly do what I consider to be totally endoscopic procedures, which I define as: the incisions being so small (usually 8-15 mm) that you cannot see into the chest directly to do any portion of the procedure.  For totally endoscopic robotic mitral valve repair, the large largest incision that I make in the chest is only 15mm, about the diameter of a finger!

Comparison of Incisions in Mitral Valve Surgery

Keep in mind, that depending on what their problem is, most patients undergoing heart surgery will still need a standard incision.  However, many heart surgery procedures are easily performed with the robot. Also understand that there are many different techniques and methods to repair your mitral valve.  There are many excellent surgeons who use alternative techniques with great results (such as sternotomy, mini-sternotomy, “port access” mini-thoracotomy, and others).

T. Sloane Guy, MD, Robotic Mitral Valve Specialist

Dr. Guy performing a mitral valve repair with the Da Vinci® Robot

That being said, I sincerely believe in robotic cardiac surgery for an appropriate patient because it allows me to make truly tiny incisions to do the operation, avoid a sternotomy (sawing open the breastplate), and see and repair the mitral valve with great clarity and precision.

The purpose of this website is to provide you with detailed information about robotic cardiac surgery from a surgeon who does it and empower you so that you can make informed choices about your medical care.  Ultimately the decisions are yours.  I want to make sure you are able to make informed decisions and truly understand your options.

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.

T. Sloane Guy, Robotic Heart Surgeon

T. Sloane Guy, MD

Dr. Guy earned his MD and completed surgery residency and cardiothoracic surgery fellowship at the University of Pennsylvania. He has extensive training and experience in robotic cardiac surgery. He is a former Lieutenant Colonel in U.S. Army who served 3 tours as a combat surgeon in Iraq and Afghanistan. He is an Associate Professor of Cardiothoracic Surgery and Director of Robotic Cardiac Surgery at Weill Cornell Medicine and NewYork-Presbyterian Hospital in New York City.

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Contact & Location Info

T. Sloane Guy, MD, MBA
Weill Cornell Medicine/New York Presbyterian Hospital
525 East 68th Street
Suite M404
New York, NY 10065
(212) 746-9443 Location: T. Sloane Guy, MD, Weill-Cornell Medicine/NewYork-Presbyterian Hospital

NewYork-Presbyterian Hospital & Weill Cornell Medicine, 68th St./York Ave.

NewYork-Presbyterian Hospital

Summary of Dr. Guy’s Background

Wake Forest University, BS, 1989
Wharton School of Business, MBA, 1992
University of Pennsylvania School of Medicine, MD, 1994
University of Pennsylvania Surgery Residency, 2002
University of Pennsylvania Cardiothoracic Fellowship, 2004
Uniformed Services University of the Health Sciences, 1995 - 2010
UC San Francisco, 2006-2010
Temple University School of Medicine, 2011-2015
Weill Cornell Medicine, 2015-present
American Board of Surgery
American Board of Thoracic Surgery
American Association for Thoracic Surgery
Society of Thoracic Surgeons
Heart Valve Society
Fellow, American College of Surgeons
Fellow, American College of Cardiology
International Society of Minimally Invasive Cardiothoracic Surgery
Hospital of the University of Pennsylvania, 2002-2004
Walter Reed Army Medical Center, 2004-2006
San Francisco VAMC/UCSF, 2006-2010
Saint Joseph's Hospital of Atlanta, 2011
Temple University Hospital, 2011-2015
Weill Cornell Medicine/NewYork-Presbyterian Hospital, 2015-present