Key result
Adding subvalvular procedures to ring annuloplasty for ischemic mitral regurgitation improves tethering and reduces recurrent mitral regurgitation, though evidence for a survival benefit remains lacking.
Suggests that an ERO threshold of ≥ 0.2 cm2 is more appropriate than ≥ 0.4 cm2 for assessing the severity of ischemic mitral regurgitation.
May reduce recurrent IMR with subvalvular repair; leaves open survival impact and optimal selection pending trials.
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Yamazaki et al. (2018) conducted a review in Ischemic mitral regurgitation. Mitral valve repair with subvalvular procedures (e.g., papillary muscle relocation, approximation, chordal cutting) vs. Ring annuloplasty alone was evaluated. Adding subvalvular procedures to ring annuloplasty for ischemic mitral regurgitation improves tethering and reduces recurrent mitral regurgitation, though evidence for a survival benefit remains lacking.
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