Publications by authors named "Jean Francois Obadia"

Objectives: To evaluate the cost-effectiveness of percutaneous repair (PR) for secondary mitral regurgitation.

Design: An economic evaluation using a time-varying Markov model comprising three states to assess the cost and effectiveness of PR added to guideline-directed medical treatment (GDMT) compared with GDMT alone. Clinical outcomes considered within the model were overall survival and heart failure (HF) hospitalisations (HFH), and the incremental cost-effectiveness ratio (ICER) was calculated.

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Importance: Correction of tricuspid regurgitation using tricuspid transcatheter edge-to-edge repair (T-TEER) in addition to guideline-directed optimized medical therapy (OMT) may improve clinical outcomes.

Objective: To evaluate the efficacy of T-TEER + OMT vs OMT alone in patients with severe, symptomatic tricuspid regurgitation.

Design, Setting, And Participants: Investigator-initiated, prospective, randomized (1:1) trial evaluating T-TEER + OMT vs OMT alone in adult patients with severe, symptomatic tricuspid regurgitation.

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Article Synopsis
  • Patients with mitral regurgitation (MR) and significant mitral annular calcification (MAC) face limited treatment options, making transcatheter mitral valve replacement (TMVR) an interesting area of study.
  • The research involved 279 patients, revealing that those with MAC had higher rates of post-procedural bleeding and renal failure but similar overall survival rates and functional improvement compared to those without MAC.
  • The findings suggest that while TMVR can be performed in MAC patients, it comes with increased complications, highlighting the need for more research on tailored TMVR devices for this group.
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Background: Large datasets of transcatheter aortic valve implantation (TAVI) for pure aortic valve regurgitation (PAVR) are scarce.

Aims: We aimed to report procedural safety and long-term clinical events (CE) in a contemporary cohort of PAVR patients treated with new-generation devices (NGD).

Methods: Patients with grade III/IV PAVR enrolled in the FRANCE-TAVI Registry were selected.

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Background And Aims: Severe tricuspid regurgitation is associated with increased mortality rates, but benefit of its correction and ideal timing are not clearly determined. This study aimed to identify patient subsets who might benefit from the surgery.

Methods: In TRIGISTRY, an international cohort study of consecutive patients with severe isolated functional tricuspid regurgitation (33 centres, 10 countries), survival rates up to 10 years were compared between patients who underwent isolated tricuspid valve surgery (repair or replacement) and those conservatively managed, overall and according to TRI-SCORE category (low: ≤3, intermediate: 4-5, and high: ≥6).

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Article Synopsis
  • Type 2 diabetes (T2D) negatively impacts left ventricular (LV) remodeling and function in patients with severe aortic stenosis (AS), leading to worse cardiac outcomes despite similar AS severity compared to non-diabetics.
  • The study combined clinical assessments and biological analyses between T2D and non-diabetic patients undergoing valve replacement, revealing significant differences in gene expression related to inflammation, cardiac hypertrophy, and mitochondrial function.
  • Findings indicated that T2D is associated with reduced mitochondrial function and calcium signaling, contributing to adverse cardiac remodeling, which may inform future treatment strategies for these patients.
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Objectives: Left atrial appendage occlusion during cardiac surgery is a therapeutic option for stroke prevention in patients with atrial fibrillation. The effectiveness and safety of left atrial appendage occlusion have been evaluated in several studies, including the LAAOS-III trial. While these studies have demonstrated efficacy and safety, the long-term economic impact of this surgical technique has not yet been assessed.

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  • Mechanical complications (MCs) following acute myocardial infarction (AMI) are rare but serious, with surgery being the recommended treatment; this study evaluated outcomes of patients who underwent such surgeries from 2001 to 2019.
  • Among 720 patients analyzed, the average age was 70, with the majority being male; the most frequent complication was ventricular septal rupture, leading to a significant in-hospital mortality rate of 37.4%.
  • Despite high immediate mortality, long-term survival rates for hospital survivors were promising, showing 65.7% survival at 10 years, with older age and postoperative low cardiac output syndrome being key factors influencing overall mortality.
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  • This study evaluates the safety and effectiveness of the aortic valve-sparing root reconstruction (AVSR) procedure in 92 patients with Type A aortic dissection (TAAD), even in severe preoperative conditions.
  • Over a 14-year period, key data including patient age, surgery duration, and outcomes were analyzed, revealing a hospital mortality rate of 16.3% and an average follow-up of 27.6 months.
  • The findings suggest that AVSR can be safely performed regardless of preoperative complications, though caution is advised for patients older than 70 years.
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Background And Aims: Mitral valve surgery and, more recently, mitral transcatheter edge-to-edge repair (TEER) are the two treatments of severe mitral regurgitation in eligible patients. Clinical comparison of both therapies remains limited by the number of patients analysed. The objective of this study was to analyse the outcomes of mitral TEER vs.

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Objectives: Relevant paravalvular leakage (PVL) due to prosthesis dislodgement is a rare but potentially severe complication after transcatheter mitral valve implantation (TMVI). Due to the epicardial anchoring mechanism of the Tendyne® TMVI system, repositioning of the valve stent may be possible by retensioning of the tether. This multicentre study aimed to investigate the procedural and short-term safety as well as efficacy of retensioning manoeuvres.

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Objectives: Post-acute myocardial infarction mechanical complications (post-AMI MCs) represent rare but life-threatening conditions, including free-wall rupture, ventricular septal rupture and papillary muscle rupture. During the coronavirus disease-19 (COVID-19) pandemic, an overwhelming pressure on healthcare systems led to delayed and potentially suboptimal treatments for time-dependent conditions. As AMI-related hospitalizations decreased, limited information is available whether higher rates of post-AMI MCs and related deaths occurred in this setting.

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Aims: Many historical and recent reports showed that post-infarction ventricular septal rupture (VSR) represents a life-threatening condition and the strategy to optimally manage it remains undefined. Therefore, disparate treatment policies among different centres with variable results are often described. We analysed data from European centres to capture the current clinical practice in VSR management.

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Background And Aims: Benefit of tricuspid regurgitation (TR) correction and timing of intervention are unclear. This study aimed to compare survival rates after surgical or transcatheter intervention to conservative management according to a TR clinical stage as assessed using the TRI-SCORE.

Methods: A total of 2,413 patients with severe isolated functional TR were enrolled in TRIGISTRY (1217 conservatively managed, 551 isolated tricuspid valve surgery, and 645 transcatheter valve repair).

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Objectives: To analyze the incidence, clinical impact on survival, and risk factors of lower limb ischemia (LLI) of surgical peripheral femoral venoarterial extracorporeal membrane oxygenation (VA ECMO) in the current era.

Design: A retrospective analysis of the authors' institutional database of VA ECMO was performed. Patients were divided into 2 groups according to the occurrence of LLI.

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Background: Transcatheter mitral valve replacement (TMVR) using dedicated devices is an alternative therapy for high-risk patients with symptomatic mitral regurgitation (MR).

Aims: This study aimed to assess the 2-year outcomes and predictors of mortality in patients undergoing TMVR from the multicentre CHOICE-MI Registry.

Methods: The CHOICE-MI Registry included consecutive patients with symptomatic MR treated with 11 different dedicated TMVR devices at 31 international centres.

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Background: Transcatheter mitral valve replacement (TMVR) is an emerging therapeutic alternative for patients with secondary mitral regurgitation (MR). Outcomes of TMVR versus guideline-directed medical therapy (GDMT) have not been investigated for this population. This study aimed to compare clinical outcomes of patients with secondary MR undergoing TMVR versus GDMT alone.

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Background: We aimed to analyze the impact of timing of implantation (strategy-outcome relationship) and volume of procedures (volume-outcome relationship) on survival of veno-arterial extracorporeal membrane oxygenation (VA ECMO) for cardiogenic shock complicating acute myocardial infarction (AMI).

Methods: We conducted an observational retrospective study through two propensity score-based analyses using a nationwide database between January 2013 and December 2019. We classified patients into early implantation (VA ECMO on the day of primary percutaneous coronary intervention [PCI]) and delayed implantation (VA ECMO beyond the day of PCI) groups.

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Objective: To review the survival modelling used in cost-effectiveness studies evaluating an interventional procedure and to discuss implications for decision-makers.

Design: A case study of three economic evaluations that each used immature data from the EVEREST II High Surgical Risk (HSR) Study of transcatheter edge-to-edge repair (TEER) for patients with severe mitral regurgitation (MR) who were at high risk of surgery.

Setting: Estimation of patient survival in cost-effectiveness studies.

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Objectives: The TRI-SCORE reliably predicts in-hospital mortality after isolated tricuspid valve surgery (ITVS) on native valve but has not been tested in the setting of redo interventions. We aimed to evaluate the predictive value of the TRI-SCORE for in-hospital mortality in patients with redo ITVS and to compare its accuracy with conventional surgical risk scores.

Methods: Using a mandatory administrative database, we identified all consecutive adult patients who underwent a redo ITVS at 12 French tertiary centres between 2007 and 2017.

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When updated clinical trial data becomes available reassessing the cost-effectiveness of technologies may modify estimates and influence decision-making. We investigated the impact of updated trial outcomes on the cost-effectiveness of percutaneous mitral repair (PR) for secondary mitral regurgitation. We updated our previous three-state time-varying Markov model to assess the cost-effectiveness of PR + guideline directed medical treatment (GDMT) versus GDMT alone.

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Background: Differences in procedural success rates have been proposed to explain the divergent results between the MITRA-FR trial (Percutaneous Repair with the MitraClip Device for Severe Functional/Secondary Mitral Regurgitation) and the COAPT trial (Cardiovascular Outcomes Assessment of the MitraClip Percutaneous Therapy for Heart Failure Patients with Functional Mitral Regurgitation).

Aim: To examine whether MITRA-FR patients who had successful clip implantation achieved a better outcome than the control group.

Methods: Based on the per protocol population of MITRA-FR, we compared the outcome in 71 patients in whom optimal clip implantation was achieved (group 1: mitral regurgitation grade ≤ 1 + at discharge) with that in 23 patients with non-optimal clip implantation (group 2: mitral regurgitation grade ≥ 2 + at discharge) and that in 137 patients in the control group (group 3).

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Article Synopsis
  • The study investigated the relationship between donor-specific antibodies (DSA) and outcomes like cardiac allograft vasculopathy (CAV) and long-term mortality in heart transplant patients.
  • Out of 282 patients, 18% developed de novo DSA during follow-up, with those having complement-binding abilities (DSA+C3d+) showing a significantly higher risk for severe CAV or mortality compared to those without DSA.
  • The findings suggest that screening for DSA and their ability to bind complement can help improve patient monitoring and outcomes in heart transplant cases.
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