Evidence map›Paper›PMID 33221925›Full record

SynthesisInteractive cardiovascular and thoracic surgery2021

Mitral valve surgery after a failed MitraClip procedure.

Francesco Melillo, Luca Baldetti, Alessandro Beneduce, Eustachio Agricola, Alberto Margonato, Cosmo Godino

Open access · bronzeAbstract readMeta-Analysis
In one paragraph

Synthesis in Interactive cardiovascular and thoracic surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 2 pooled it
2.5field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 2 syntheses or guidelines pooled it, 26 citations in OpenAlex.

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  11. Clinical Impact of Computational Heart Valve Models.Materials (Basel, Switzerland) · 2022
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Francesco MelilloCardio-Thoracic-Vascular Department, San Raffaele Hospital, Milan, Italy.
Luca BaldettiCardio-Thoracic-Vascular Department, San Raffaele Hospital, Milan, Italy.
Alessandro BeneduceCardio-Thoracic-Vascular Department, San Raffaele Hospital, Milan, Italy.
Eustachio AgricolaCardio-Thoracic-Vascular Department, San Raffaele Hospital, Milan, Italy.
Alberto MargonatoCardio-Thoracic-Vascular Department, San Raffaele Hospital, Milan, Italy.
Cosmo GodinoCardio-Thoracic-Vascular Department, San Raffaele Hospital, Milan, Italy.
Vita-Salute San Raffaele University · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesAmong patients undergoing transcatheter mitral valve repair with the MitraClip device, a relevant proportion (2-6%) requires open mitral valve surgery within 1 year after unsuccessful clip implantation. The goal of this review is to pool data from different reports to provide a comprehensive overview of mitral valve surgery outcomes after the MitraClip procedure and estimate in-hospital and follow-up mortality.

methodsAll published clinical studies reporting on surgical intervention for a failed MitraClip procedure were evaluated for inclusion in this meta-analysis. The primary study outcome was in-hospital mortality. Secondary outcomes were in-hospital adverse events and follow-up mortality. Pooled estimate rates and 95% confidence intervals (CIs) of study outcomes were calculated using a DerSimionian-Laird binary random-effects model. To assess heterogeneity across studies, we used the Cochrane Q statistic to compute I2 values.

resultsOverall, 20 reports were included, comprising 172 patients. Mean age was 70.5 years (95% CI 67.2-73.7 years). The underlying mitral valve disease was functional mitral regurgitation in 50% and degenerative mitral regurgitation in 49% of cases. The indication for surgery was persistent or recurrent mitral regurgitation (grade >2) in 93% of patients, whereas 6% of patients presented with mitral stenosis. At the time of the operation, 80% of patients presented in New York Heart Association functional class III-IV. Despite favourable intraoperative results, in-hospital mortality was 15%. The rate of periprocedural cerebrovascular accidents was 6%. At a mean follow-up of 12 months, all-cause death was 26.5%. Mitral valve replacement was most commonly required because the possibility of valve repair was jeopardized, likely due to severe valve injury after clip implantation.

conclusionsSurgical intervention after failed transcatheter mitral valve intervention is burdened by high in-hospital and 1-year mortality, which reflects reflecting the high-risk baseline profile of the patients. Mitral valve replacement is usually required due to leaflet injury.

Indexed as

Cardiac Surgical ProceduresSurgical InstrumentsAgedFollow-Up StudiesHumansMaleMitral ValveRisk AssessmentTreatment FailureTreatment OutcomeFailureMitral regurgitationPercutaneous edge-to-edgeSurgeryTranscatheter mitral valve repair

Identifiers

PMID33221925
PMCPMC8906661
OpenAlexW3108229757

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.