What is the clinical evidence from this study?

Study design: Observational. Population: Severe mitral regurgitation following acute myocardial infarction (n=471). Intervention: Mitral valve intervention (surgical or percutaneous) vs. Conservative treatment. Primary outcome: In-hospital mortality (HR 0.28, 95% CI 0.18-0.46, p=<0.01).

What question did this study set out to answer?

To compare the clinical outcomes of conservative medical therapy, surgical mitral valve repair or replacement, and percutaneous mitral valve repair in patients developing secondary mitral regurgitation shortly after acute myocardial infarction.

July 23, 2021European Heart Journal

Conservative, surgical, and percutaneous treatment for mitral regurgitation shortly after acute myocardial infarction

Q: What are the key findings of this study?

Mitral valve intervention was associated with lower in-hospital mortality compared to conservative treatment (11% vs. 27%, P<0.01) in patients with moderate-to-severe MR following acute MI.

Q: What question did this study set out to answer?

To compare the clinical outcomes of conservative medical therapy, surgical mitral valve repair or replacement, and percutaneous mitral valve repair in patients developing secondary mitral regurgitation shortly after acute myocardial infarction.

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Key result

Mitral valve intervention was associated with lower in-hospital mortality compared to conservative treatment (11% vs. 27%, P<0.01) in patients with moderate-to-severe MR following acute MI.

Why the study?

Severe mitral regurgitation following acute myocardial infarction is linked to high mortality and has inconclusive recommendations in clinical guidelines.

Does mitral valve intervention (surgical or percutaneous) reduce mortality compared to conservative treatment in patients with moderate-to-severe secondary MR following acute MI?

Population

471 consecutive patients with at least moderate-to-severe post-MI MR across 21 international centres

Comparison

Conservative therapy vs SMVR vs PMVR

Design

Retrospective international multicenter registry

Follow-up

1 year

Authors

DHDan HabermanMedStar Washington Hospital Center RERodrigo Estévez‐LoureiroInterventional / Structural Cardiology TBTomás Benito‐GonzálezUniversidad de Salamanca

Discussion

Member takes

Implication

May support percutaneous over surgical or conservative management in post-MI secondary MR; leaves open confirmation by randomized trials.

Key Points

To compare the clinical outcomes of conservative medical therapy, surgical mitral valve repair or replacement, and percutaneous mitral valve repair in patients developing secondary mitral regurgitation shortly after acute myocardial infarction.
Retrospective international registry of N=471 consecutive patients (mean age 73 ± 11 years; 43% female) with moderate-to-severe post-infarction mitral regurgitation across 21 centers in North America, Europe, and the Middle East.
Evaluated outcomes across three treatment arms: conservative medical therapy (n=266), surgical mitral valve repair/replacement (SMVR; n=106), and percutaneous mitral valve repair (PMVR; n=99) using edge-to-edge repair, with a primary endpoint of in-hospital mortality.
Mitral valve intervention was associated with lower in-hospital mortality (11% vs. 27%, P < 0.01) and 1-year mortality (16% vs. 35%, P < 0.01; adjusted HR 0.28, 95% CI 0.18-0.46, P < 0.01) compared with conservative management.
PMVR demonstrated lower in-hospital mortality (6% vs. 16%, P = 0.03) and lower 1-year mortality (17% vs. 31%, P = 0.04; adjusted HR for SMVR vs. PMVR 3.75, 95% CI 1.55-9.07, P < 0.01) compared to SMVR, despite similar procedural success (93% vs. 92%, P = 0.53).

Study Design

Type

Observational (n=471)

Multicenter

Yes

Structured PICO

Does mitral valve intervention (surgical or percutaneous) reduce mortality compared to conservative treatment in patients with moderate-to-severe secondary MR following acute MI?

Population

471 patients (mean age 73, 43% female) with at least moderate-to-severe secondary mitral regurgitation following acute myocardial infarction, followed for up to 1 year.

Exposure

Mitral valve intervention, consisting of either surgical mitral valve repair or replacement (SMVR, n=106) or percutaneous mitral valve repair (PMVR) using edge-to-edge repair (n=99).

Comparator

Conservative treatment.

Outcome

In-hospital mortalityhard clinical

Main Result

Hazard Ratio: 0.28 (95% CI 0.18–0.46)

Absolute Event Rate: 11% vs 27%

p-value: p=<0.01

Early mitral valve intervention, particularly percutaneous edge-to-edge repair, is associated with significantly lower mortality compared to conservative management in patients with severe secondary MR post-MI.

Cite This Study

Haberman et al. (2021) conducted an observational in Severe mitral regurgitation following acute myocardial infarction (n=471). Mitral valve intervention (surgical or percutaneous) vs. Conservative treatment was evaluated on In-hospital mortality (HR 0.28, 95% CI 0.18-0.46, p=<0.01). Mitral valve intervention was associated with lower in-hospital mortality compared to conservative treatment (11% vs. 27%, P<0.01) in patients with moderate-to-severe MR following acute MI.

synapsesocial.com/papers/6a74d52696d04a2f43f55cfb https://doi.org/10.1093/eurheartj/ehab496

Topics

Mitral valve intervention

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Conservative, surgical, and percutaneous treatment for mitral regurgitation shortly after acute myocardial infarction

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Cite This Study

Topics

Conservative, surgical, and percutaneous treatment for mitral regurgitation shortly after acute myocardial infarction

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Cite This Study

Also Consider

Topics

Also Consider