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Smith, Robert L.; Hamandi, Mohanad; Ailawadi, Gorav; George, Timothy J.; Mack, Michael J.; DiMaio, J. Michael; Ryan, William H.; Squiers, John J.; Schaffer, Justin; Szerlip, Molly A.; Lanfear, Allison T.; Hutcheson, Kelley; Brinkman, William T.; Harrington, Katherine B.; Tyerman, Zachary M.; Goldman, Scott M.
The Journal of thoracic and cardiovascular surgery, July 2023, 2023-07-00, 20230701, Volume: 166, Issue: 1Journal Article
The treatment of mitral valve disease in the presence of mitral annular calcification (MAC) is associated with an increased risk of cardiovascular and all-cause mortality. Various surgical and transcatheter techniques for the treatment of mitral disease with severe MAC have been described. However, these procedures are associated with high risk of operative morbidity and mortality. We describe our experience with open surgical implantation of a balloon-expandable valve (BEV) in patients with severe MAC as an alternative approach. BEV implantation was performed with direct vision through the left atrium via a median sternotomy or minimally invasive approach. The midportion of the anterior leaflet is excised, and a ventricular septal myectomy performed if there is high risk for left ventricular outflow tract obstruction. The primary outcome was technical success according to the Mitral Valve Academic Research Consortium criteria; secondary outcomes were 30-day and 1-year mortality. From October 2015 through October 2020, 51 patients at 2 institutions underwent BEV-in-MAC (mean age, 73.9 ± 8.8 years; 60.8% 31/51 were female; mean Society of Thoracic Surgeons predicted risk of mortality: 6.8% ± 4.8%). Technical success was 94.1% (48/51). Thirty-day and 1-year mortality were 13.7% (7/51) and 33.3% (15/45), and for stroke 3.9% (2/51) and 4.4% (2/45), respectively. Surgical implantation of a BEV in the mitral position offers a treatment option for patients with mitral valve disease complicated by severe MAC who are at increased risk for conventional surgical approaches and at risk for left ventricular outflow tract obstruction with transcatheter approaches. Summary of study findings of balloon-expandable valve (BEV) implantation in 51 patients with mitral valve disease complicated by annular calcification (MAC) who were at increased risk for conventional surgical or transcatheter approaches. Display omitted
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