Key result
Flexible annuloplasty rings did not significantly differ from semi-rigid rings in 10-year overall survival (53.1% vs 40.0%, P=0.330) or freedom from moderate to severe MR (53.1% vs 53.8%, P=0.725).
Why the study?
Long-term data on the various types of annuloplasty rings used for restrictive mitral annuloplasty in chronic ischaemic mitral regurgitation remain limited.
Does the use of flexible versus semi-rigid annuloplasty rings improve survival and reduce MR recurrence in patients with chronic ischaemic mitral regurgitation undergoing restrictive mitral annuloplasty?
Population
133 patients with CIMR undergoing restrictive mitral annuloplasty
Comparison
Flexible rings vs semi-rigid rings
Design
Single-institution retrospective cohort study
Follow-up
10 years
Authors
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Flexible and semi-rigid rings show similar outcomes in CIMR repair; leaves open optimal ring selection pending randomized trials.
Cohort (n=133)
No
Does the use of flexible versus semi-rigid annuloplasty rings improve survival and reduce MR recurrence in patients with chronic ischaemic mitral regurgitation undergoing restrictive mitral annuloplasty?
Absolute Event Rate: 53.1% vs 40%
p-value: p=0.330
In patients with chronic ischaemic mitral regurgitation, the choice between flexible and semi-rigid annuloplasty rings does not significantly impact 10-year survival or MR recurrence, though semi-rigid rings are associated with greater left ventricular reverse remodelling.
Pang et al. (2019) conducted a cohort in Chronic ischaemic mitral regurgitation (CIMR) (n=133). Flexible annuloplasty rings vs. Semi-rigid annuloplasty rings was evaluated on Overall survival at 10 years (p=0.330). Flexible annuloplasty rings did not significantly differ from semi-rigid rings in 10-year overall survival (53.1% vs 40.0%, P=0.330) or freedom from moderate to severe MR (53.1% vs 53.8%, P=0.725).
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