Key result
An immediate post-procedural mitral valve area <1.8 cm2 was associated with a significantly lower event-free survival rate compared to an area ≥1.8 cm2 (P<0.001).
Why the study?
Does an immediate post-PMV MVA ≥1.8 cm² predict improved restenosis-free and clinical event-free survival in patients after successful percutaneous mitral valvuloplasty?
Population
329 patients who achieved procedural success after percutaneous mitral valvuloplasty between 1995 and 2000.
Comparison
Immediate post-PMV mitral valve area ≥1.8 cm² vs Immediate post-PMV mitral valve area <1.8 cm²
Design
Cohort
Follow-up
median 74 months and 109 months
Authors
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May inform post-PMV risk stratification; extends Level 3 data but leaves open prospective validation.
Cohort (n=329)
Does an immediate post-PMV MVA ≥1.8 cm² predict improved restenosis-free and clinical event-free survival in patients after successful percutaneous mitral valvuloplasty?
p-value: p=< 0.001
An immediate post-procedural mitral valve area of ≥1.8 cm² is a strong predictor of long-term restenosis-free and clinical event-free survival after successful percutaneous mitral valvuloplasty.
Song et al. (2009) conducted a cohort in successful percutaneous mitral valvuloplasty (n=329). Immediate post-PMV MVA <1.8 cm2 vs. Immediate post-PMV MVA ≥1.8 cm2 was evaluated on event-free survival (cardiovascular death, mitral valve surgery, and repeat PMV) (p=< 0.001). An immediate post-procedural mitral valve area <1.8 cm2 was associated with a significantly lower event-free survival rate compared to an area ≥1.8 cm2 (P<0.001).
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