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Open research questions in Cardiac Valve Diseases and Treatments

1,349 gap statements mined from Cardiac Valve Diseases and Treatments papers in our 7.9M-paper local library, which holds 6,789 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

Choosing where to publish on Cardiac Valve Diseases and Treatments? See the ranked Medicine journals.

What the literature leaves open

  • The need for a less invasive alternative to surgical aortic valve replacement for patients poorly suited to surgery. The gap in understanding the evolution of aortic valve replacement across different eras.

    Evolution of Aortic Valve Replacement Across Two Eras: Institutional Changes in Transcatheter and Surgical Practice and Outcomes · 2026 · DOI

  • Limited valve-specific data on HALT after SAVR. Uncertainty about the incidence and characteristics of HALT with the INSPIRIS RESILIA valve.

    Hypo-attenuated leaflet thickening after surgical aortic valve replacement with INSPIRIS RESILIA valve · 2026 · DOI

  • There is no data that VKAs are superior to DOACs for prevention of thrombotic valves. The incidence of clinical leaflet thrombosis is expected to be even rarer in patients receiving direct oral anticoagulants.

    Sub-acute clinical leaflet thrombosis after transcatheter aortic valve implantation under direct oral anticoagulants · 2026 · DOI

  • The relationship between diabetes and aortic stenosis is complex and influenced by multiple factors. The effects of diabetes on valvular and myocardial disease are not well understood. There is a need for personalized management strategies for diabetic aortic stenosis.

    Ethnic Influence on the Development of Aortic Stenosis in Patients with Diabetes: A Two-Hit Model of Myocardial Fibrosis and an Integrated Framework for Personalised Management · 2026 · DOI

  • Further studies are needed to define the fibrocalcific phenotype and distinguish prevention from slowing and reversal. Research is required to align therapeutic timing with endpoints at the levels of activity, tissue burden, valve function, myocardial response, and clinical events. The relationship between serum environment and cellular drug sensitivity needs to be further explored.

    Fibrocalcific phenotypes in calcific aortic valve disease: imaging characterization, treatment timing, and efficacy assessment · 2026 · DOI

  • The condition of MAC and its impact on mitral valve surgery is not well understood, particularly in high-risk patients.

    Long-term clinical and echocardiographic outcomes after mitral valve surgery for severe mitral annular calcification · 2026 · DOI

  • International guidelines recommend TAVI only in centers with on-site cardiac surgery, but there is a need to evaluate the feasibility and safety of TAVI in centers without on-site cardiac surgery. Evolving technology and expertise have reduced complications, making it possible to consider TAVI in centers without on-site cardiac surgery.

    Transfemoral Transcatheter Aortic Valve Implantation at Hospitals Without On-Site Cardiac Surgery (TAVI at Home): A Multicenter Prospective Interventional Study · 2025 · DOI

  • There is a lack of fully established diagnostic guidelines and reference standards for mitral annular disjunction. The diagnosis and prognostic implications of mitral annular disjunction are not well understood. There is a need for a comprehensive overview of mitral annular disjunction, including its prevalence, anatomical features, and diagnostic challenges.

    Mitral Annular Disjunction: Epidemiology, Diagnostic Methods, Prognosis, and Novel Implications · 2025 · DOI

  • Exclusion criteria were limited to the presence of significant aortic valve regurgitation, the need for emergency surgery, the need for concomitant surgery, previous cardiac surgery or infective endocarditis.

    Bioprostheses and Mechanical Prostheses for Aortic Valve Replacement in Patients Aged 50 to 65 Years Offer Similar Long-Term Survival Rates · 2025 · DOI

  • Further studies are needed to compare the effect of mechanical and bioprosthetic valves on long-term survival in patients aged 50-65 years. Research should focus on the impact of prosthesis size and type on patient outcomes. The development of new prosthetic valves and surgical techniques may require additional research to determine their effectiveness.

    Bioprostheses and Mechanical Prostheses for Aortic Valve Replacement in Patients Aged 50 to 65 Years Offer Similar Long-Term Survival Rates · 2025 · DOI

  • The requirement for general anesthesia and esophageal intubation for TEE, which can be limiting for certain patients. The potential for shadowing artifacts from anterior cardiac structures to impact TEE image quality. The need for further studies to validate the role of 4D-ICE in guiding T-TEER and to evaluate long-term outcomes.

    Early Experience with Acuson AcuNav 4D-ICE to Guide Transcatheter Tricuspid Edge-to-Edge Repair: 4D Intracardiac Echocardiography Compared to Transesophageal Echocardiography · 2025 · DOI

  • The need for a viable alternative or complement to TEE in guiding T-TEER, particularly for patients unsuited for TEE or with complex TEE windows. The lack of studies comparing 4D-ICE and TEE in guiding T-TEER. The need for further multicenter studies to validate the role of 4D-ICE in guiding T-TEER and to evaluate long-term outcomes.

    Early Experience with Acuson AcuNav 4D-ICE to Guide Transcatheter Tricuspid Edge-to-Edge Repair: 4D Intracardiac Echocardiography Compared to Transesophageal Echocardiography · 2025 · DOI

  • There is a lack of standardized acquisition parameters for calcium detection on contrast-enhanced CT scans. The threshold for calcium detection on contrast-enhanced CT scans has yet to be standardized in published reports.

    Management of TAVI Underexpansion with Self-Expanding Valves: A Practical Approach · 2025 · DOI

  • Lack of standardization of cardiac rehabilitation programs for patients after mitral valve intervention. Limited evidence on the efficacy and safety of cardiac rehabilitation programs. Need for further research on the benefits and challenges of cardiac rehabilitation in patients after mitral valve intervention.

    Cardiac Rehabilitation After Mitral Valve Intervention: Tailored Assessment, Management, and Exercise Training · 2025 · DOI

  • Advances in surgical techniques have addressed some of these limitations.

    Perioperative Considerations, Anesthetic Management and Transesophageal Echocardiographic Evaluation of Patients Undergoing the Ross Procedure · 2025 · DOI

  • The ecological fallacy inherent in the design, where associations identified at the cohort level cannot be directly extrapolated to individual risk predictions. Geographical and demographic homogeneity represents a significant limitation for generalizability. The complexity of the data and the need to develop a predictive model that can explain the heterogeneity in TAVR outcomes.

    Beyond Conventional Meta-Analysis: A Meta-Learning Model to Predict Cohort-Level Mortality After Transcatheter Aortic Valve Replacement (TAVR) · 2025 · DOI

  • The therapeutic management of mitral regurgitation has undergone a substantial transformation, evolving from an exclusively surgical domain to a comprehensive framework. There is a need for a comprehensive understanding of the role of echocardiography in the diagnosis, quantification, and management of mitral regurgitation.

    Echocardiographic Assessment of Patients Undergoing Mitral Valve Repair · 2025 · DOI

  • The diagnosis of mitral annular calcification (MAC) can be challenging. The treatment of MAC is limited, and there is no confirmed medical therapy. The presence of MAC can influence the outcome of mitral valve transcatheter and surgical interventions.

    Mitral Annular Calcification, a Not So Marginal and Relatively Benign Finding as Many of Us Think: A Review · 2025 · DOI

  • Potential future therapies may be triglyceride lowering and anti-inflammatory therapies. Further research on the role of fibroblast growth factor-23 (FGF-23) in the pathogenesis of MAC is needed.

    Mitral Annular Calcification, a Not So Marginal and Relatively Benign Finding as Many of Us Think: A Review · 2025 · DOI

  • The disease has a complex structural substrate, including both mineral deposition and fibrous matrix remodeling. The literature often merges distinct questions, making it challenging to understand the disease. Prior pharmacologic trials have had limited success, with randomized lipid-lowering and mineral-targeted trials in patients being negative.

    Fibrocalcific phenotypes in calcific aortic valve disease: imaging characterization, treatment timing, and efficacy assessment · 2026 · DOI

  • Managing complications and providing emergency cardiac surgery when needed. Balancing the benefits and risks of TAVI in centers without on-site cardiac surgery.

    Transfemoral Transcatheter Aortic Valve Implantation at Hospitals Without On-Site Cardiac Surgery (TAVI at Home): A Multicenter Prospective Interventional Study · 2025 · DOI

  • Further study of the temporal transition in TAVR and SAVR utilization and outcomes - National and multicenter analyses to confirm the findings - Investigation of the factors contributing to the improvements in TAVR…

    Evolution of Aortic Valve Replacement Across Two Eras: Institutional Changes in Transcatheter and Surgical Practice and Outcomes · 2026 · DOI

  • The specific influence of DM on the natural history of AS has not been incorporated into contemporary guidelines, - Current risk models do not account for ethnicity, - None of the individual trials reported an adequately powered, pre-specified DM subgroup analysis, - The evidence gap for earlier intervention in diabetic patients is critical, - The study did not investigate the effect of diabetes on the valvular…

    Ethnic Influence on the Development of Aortic Stenosis in Patients with Diabetes: A Two-Hit Model of Myocardial Fibrosis and an Integrated Framework for Personalised Management · 2026 · DOI

  • No multivariable Cox model was fitted - The results are therefore associations rather than independent predictors - The study had a limited sample size of 112…

    Long-term clinical and echocardiographic outcomes after mitral valve surgery for severe mitral annular calcification · 2026 · DOI

  • The study identifies a gap in the comparison of costs and clinical outcomes associated with TAVI and SAVR. The study also identifies a gap in the comparison of TAVI and SAVR in patients with and without coronary artery disease.

    Outcomes and Cost-Effectiveness of Transcatheter Versus Surgical Aortic Valve Replacement in Patients with and Without Coronary Artery Disease · 2025 · DOI

Most-cited papers in Cardiac Valve Diseases and Treatments

Most recent work

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Open questions raised by papers listed on this page include: (1) There is no data that VKAs are superior to DOACs for prevention of thrombotic valves (“Sub-acute clinical leaflet thrombosis after transcatheter aortic valve…”, 2026); (2) The effects of diabetes on valvular and myocardial disease are not well understood (“Ethnic Influence on the Development of Aortic Stenosis in Patients with…”, 2026); (3) Further studies are needed to define the fibrocalcific phenotype and distinguish prevention from slowing and reversal (“Fibrocalcific phenotypes in calcific aortic valve disease: imaging…”, 2026); (4) The condition of MAC and its impact on mitral valve surgery is not well understood, particularly in high-risk patients (“Long-term clinical and echocardiographic outcomes after mitral valve surgery…”, 2026); (5) International guidelines recommend TAVI only in centers with on-site cardiac surgery, but there is a need to evaluate the feasibility and safety of TAVI in centers without on-site cardiac surgery (“Transfemoral Transcatheter Aortic Valve Implantation at Hospitals Without…”, 2025). 1,349 gap statements have been mined from Cardiac Valve Diseases and Treatments papers in our 7.9M-paper local library, which holds 6,789 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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