Toronto (May 27, 2007) - University Health Network's Division of Cardiovascular Surgery announced today that at 1pm EDT (17:00 UTC) on June 4, 2007, Dr. Tirone David will conduct a live surgical webcast on

Established surgeons from around the world visit the Peter Munk Cardiac Program to learn more about the way they care for their patients. In addition, that center publishes numerous research reports each year. This adds to the professional knowledge and skill of fellow cardiac surgeons and helps to improve the treatment of all cardiac patients.

University Health Network is home to one of the largest Cardiovascular Surgery Centres in Canada. The Peter Munk Cardiac Program surgeons perform more than 2,000 operations per year. Their combined skill and expertise allows UHN to offer comprehensive innovative treatments for patients with complex heart conditions. These innovative techniques and treatments continue to generate the best clinical results for patients.

Approximately 75,000 patients require some form of mitral valve repair each year. An additional 90,000 patients worldwide have mitral valves that cannot be repaired and ultimately are entirely replaced with prosthetic technology, composed of a metal or mechanical valve or using treated tissue such as porcine valves for implantation.

In 2005, Dr. Tirone David, working with engineers from Medtronic, designed the Simplici-T® Annuloplasty System for use in mitral and tricuspid valve repair surgery to help restore the leaking valve opening to a more-normal shape. "The Simplici-T band restores proper valve coaptation and improves valve function after repair."

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