Medicine
Minimally Invasive Mitral Valve Repair and Replacement
Quick fact
In select patients, minimally invasive mitral valve surgery delivers results equal to conventional open-heart surgery, but with less post-operative pain, lower risk of wound infection, and a faster return to normal activities—often with only a 5–8 cm incision in the right chest.
Why this is interesting
You might think that all heart surgeries require opening the chest from sternum to sternum, but many mitral valve repairs today are done through a few small incisions. How is that possible, and is it as safe as traditional surgery?
Read the full explanation
Understanding Minimally Invasive Mitral Valve Repair and Replacement
Think of the heart as a house with a faulty door—the mitral valve. Traditionally, to fix the door, you’d have to knock down the whole front wall (sternum). Minimally invasive surgery is like using a side window (a small cut between the ribs) and using long, specialized tools and a camera to reach the door without disturbing the wall. The surgeon makes small incisions in the right side of the chest, often between the ribs, and uses a video camera to see inside. The heart is still stopped temporarily, and a heart-lung machine (cardiopulmonary bypass) takes over circulation. Specialized instruments are inserted through the small incisions to repair or replace the valve. Because the incisions are small, there is less tissue damage, less pain, and quicker recovery.
A deeper explanation
The heart-lung machine is connected through vessels in the groin and neck, which is a departure from the traditional method of opening the chest. The surgical team uses transesophageal echocardiography (a probe in the esophagus) to see the valve clearly and to assess the repair before the heart is restarted. For repair, the surgeon may use techniques like leaflet resection, chordal replacement, or annuloplasty (placing a ring to support the valve). If the valve cannot be repaired, it is replaced with a biological or mechanical valve. Minimal access does not mean minimal surgery—the same precision is required. The key is patient selection: suitable patients include those with certain valve pathologies, no significant chest wall deformities, and no severe lung disease. Outcomes are now proven to be comparable to open surgery, with reduced complications, shorter hospital stays, and better cosmetic results.