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Analysis of Recurred Mitral Regurgitation after Mitral Repair according to Procedure or Valve Related Causes  

Shin Hong Ju (Department of Thoracic and Cardiovascular Surgery, University of Ulsan College of Medicine)
Yoo Dong Gon (Department of Thoracic and Cardiovascular Surgery, Gangneung Asan Hospital, University of Ulsan College of Medicine)
Lee Yong Jik (Department of Thoracic and Cardiovascular Surgery, University of Ulsan College of Medicine)
Park Soon Ik (Department of Thoracic and Cardiovascular Surgery, University of Ulsan College of Medicine)
Choo Suk Jung (Department of Thoracic and Cardiovascular Surgery, University of Ulsan College of Medicine)
Song Hyun (Department of Thoracic and Cardiovascular Surgery, University of Ulsan College of Medicine)
Chung Cheol Hyun (Department of Thoracic and Cardiovascular Surgery, University of Ulsan College of Medicine)
Song Meong Gun (Department of Thoracic and Cardiovascular Surgery, University of Ulsan College of Medicine)
Lee Jae Won (Department of Thoracic and Cardiovascular Surgery, University of Ulsan College of Medicine)
Publication Information
Journal of Chest Surgery / v.38, no.2, 2005 , pp. 132-138 More about this Journal
Abstract
Background: Mitral valve repair (MVP) is the optimal procedure for mitral regurgitation (MR), however, failure and subsequent reoperations are the limitations. The current study assessed the procedure in relation to the primary valve related causes of recurrent MR. Material and Method: MR was treated in 493 patients undergoing MVP from January of 1994 to January of 2002. The causes of MR were degenerative $(n=252,\;51.5\%),$ rheumatic $(n=156,\; 31.6\%),$ and others $(n=85,\; 16.9\%).$ Surgery comprised 446 ring annuloplasties $(90.5\%),$ 227 new chordae formations $(46\%),$ 125 quadriangular resections $(25.3\%),$ 28 chordae transfers $(5.7\%),$ and 8 Alfieri's stitches $(1.6\%).$ The mean follow up was $29.04\pm22.81$ months. Result: There were 5 early $(1.01\%)$, and 5 late deaths $(1.01\%).$ The reoperation rate was $1.42\%$. There were 45 $(9.1\%)$ recurrent MR (grade III or IV). Of these, 24 were procedure related including incomplete repair (n=14), discordant new chordae length (n=8) and others (n=2). In 21 patients, the cause was valve related including rheumatic disease progression (n=10), recurrent chordae elongation or prolapse (n=5) and others (n=6). Severe MR was higher after incomplete repair (p < 0.001), and valve related failure strongly correlated with rheumatic progression (p < 0.05). Conclusion: Since completeness of operation is the prime risk factor that determine the repair durability, intra-operative assessment of the initial repair with trans-esophageal echocardiography is essential.
Keywords
Mitral valve; repair; Mitral valve regurgitation; Risk analysis;
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