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Open research questions in Mechanical Circulatory Support Devices

608 gap statements mined from Mechanical Circulatory Support Devices papers in our 7.9M-paper local library, which holds 3,159 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.

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What the literature leaves open

  • The direct short-term effects of inhaled nitric oxide on pulmonary artery pressure in patients with cardiogenic shock receiving mechanical circulatory support have not been prospectively evaluated. The current evidence is limited by the lack of prospective studies evaluating the effects of inhaled nitric oxide in this patient population.

    Effects of inhaled nitric oxide during mechanical circulatory support: a prospective pilot study · 2026 · DOI

  • The lack of a validated diagnostic marker for selective coronary hypoxemia. The need for an exploratory physiological framework for the recognition and investigation of selective coronary hypoxemia.

    Selective coronary hypoxemia during VA-ECMO: limitations of peripheral oxygenation monitoring · 2026 · DOI

  • Limited evidence regarding integrated nursing management during transitions between multiple life-support modalities. Need for a comprehensive approach to nursing management in patients with end-stage heart failure.

    Stage-specific integrated nursing management enables successful transition to left ventricular assist device support in end-stage dilated cardiomyopathy: a case report · 2026 · DOI

  • The optimal treatment for ST-elevation myocardial infarction with cardiogenic shock remains uncertain. There is a lack of systematic evaluation of mechanical circulatory support strategies in this population.

    Comparative efficacy and safety of mechanical circulatory support in ST-elevation myocardial infarction with cardiogenic shock: a network meta-analysis · 2026 · DOI

  • The paper identifies a gap in the current predictive models, which have varying definitions for RHF. The gap is also due to the heterogeneity in LVAD types, patient populations, and study eras. The paper notes that direct comparison of models based solely on area-under-the-curve (AUC) values is inherently problematic.

    Prediction of Right Heart Failure in LVAD Candidates: Current Approaches and Future Directions · 2025 · DOI

  • One challenge is the methodological complexity of analyzing sex differences in recurrent hospitalization. Another challenge is the need to account for competing risks and recurrent events in the analysis. The study also faced the challenge of handling missing data, which was addressed using the semiparametric imputation procedure.

    Psychosocial Risk and Recurrent Hospitalizations in Women and Men Following LVAD Implantation: A Multi-State Analysis of the INTERMACS Registry · 2025 · DOI

  • The study notes that cardiogenic shock is a life-threatening condition with high mortality. The study identifies challenges in managing CS, including the need for early recognition and initiation of etiopathophysiologic treatment and hemodynamic support. The study notes that there is great heterogeneity in terms of the etiologic, pathophysiological, and hemodynamic features among patients.

    Clinical Characteristics and Outcomes of Patients Admitted in Cardiac Intensive Care Unit with Cardiogenic Shock: A Single-Center Study · 2025 · DOI

  • Multidisciplinary "CS teams" have demonstrated improved outcomes; however, data from low- and middle-income countries are scarce.

    Building a Multidisciplinary Cardiogenic Shock Program in Latin America: Outcomes From the TecSalud Program · 2026 · DOI

  • Morbid obesity is increasingly prevalent in Acute Myocardial Infarction (AMI) but its impact on outcomes among patients receiving Extracorporeal Membrane Oxygenation (ECMO) remains poorly defined.

    D-1 | Morbid Obesity and Clinical Outcomes in Acute Myocardial Infarction Patients on Extracorporeal Membrane Oxygenation: A Nationwide Analysis · 2026 · DOI

  • Early percutaneous coronary intervention (PCI) and mechanical circulatory support (MCS) are cornerstone interventions, yet their comparative effectiveness remains uncertain.

    F-2 | Comparative 30- and 90-Day Outcomes of Early Mechanical Circulatory Support Versus Percutaneous Coronary Intervention in Acute Myocardial Infarction Complicated by Cardiogenic Shock: A Propensity-Matched Retrospective Cohort Study · 2026 · DOI

  • This study explores trends in CS-related mortality among adults in the United States (US) from 1999 to 2023, addressing a key gap in the literature.

    OR3-13 | Nationwide Trends and Racial Disparities in Cardiogenic Shock–Related Mortality in the United States, 1999–2023 · 2026 · DOI

  • Emergent device implantation frequently occurs outside routine daytime hours, yet whether nighttime initiation is associated with delays in care or worse outcomes remains uncertain.

    Diurnal Variation in Mechanical Circulatory Support Initiation and Associated Outcomes · 2026 · DOI

  • The optimal hemodynamic support strategy for patients undergoing high-risk percutaneous coronary intervention (PCI) without cardiogenic shock remains uncertain.

    OR2-11 | Better Outcomes, Equal Safety: PLVAD Reduces Mortality and AKI Without Increasing Bleeding in High-Risk PCI—An updated Meta-Analysis · 2026 · DOI

  • Transthoracic echocardiography (TTE) is widely used for hemodynamic assessment, but its accuracy with estimating cardiac filling pressures and cardiac index in a cardiogenic shock (CS) population remains unclear.

    OR3-16 | Comparative Analysis of Transthoracic Echocardiography and Right Heart Catheterization for Assessment of Left-sided Filling Pressures and Cardiac Index in Cardiogenic Shock: A Retrospective Cohort Study · 2026 · DOI

  • Percutaneous management of high risk, percutaneous coronary intervention (PCI) needing mechanical support for complex coronary artery disease in patients needing transcatheter aortic valve replacement for severe aortic stenosis remains incompletely defined.

    Clinical Outcomes of Concurrent Impella-Assisted High-Risk PCI and TAVR in Patients With Complex Coronary Artery Disease and Severe Aortic Stenosis · 2026 · DOI

  • Left ventricular/left ventricle (LV) overload remains a major limitation of veno-arterial extracorporeal membrane oxygenation (VA-ECMO) in patients with cardiogenic shock.

    Utilization of Preventive Single-Inflow Cannula Left Atrial Veno-Arterial Extracorporeal Membrane Oxygenation in Cardiogenic Shock · 2026 · DOI

  • Introduction Pulmonary artery (PA) cannulation is emerging as a method for concurrent cardiac and respiratory failure, but limited data exists on how cannula positioning, particularly cannula tip angle, affects perfusion symmetry.

    Investigating cannula tip angles in pulmonary artery ECMO: A computational study on the potential benefits of angulation for oxygen delivery · 2026 · DOI

  • Weaning from venoarterial extracorporeal membrane oxygenation (VA ECMO) remains a major challenge because reliable indicators of cardiac recovery are lacking.

    Temporal evolution of arterial pulse pressure trajectories as early predictor of weaning success in venoarterial extracorporeal membrane oxygenation · 2026 · DOI

  • When performed in experienced centres, prone positioning during ECMO is feasible and safe, but evidence for a survival benefit is inconclusive.

    Improving outcomes of patients with venovenous extracorporeal membrane oxygenation · 2026 · DOI

  • Small sample size, - Retrospective case series, - Limited follow-up time, - Study only examined HM3 LVAD…

    Perioperative management and outcomes of hip and knee arthroplasty among heartmate 3 left ventricular assist device recipients · 2026 · DOI

  • Larger controlled studies are needed to clarify the clinical importance of iNO - Studies should investigate the effects of iNO on systemic hemodynamics and antegrade flow - Research should assess the safety of prolonged or high-dose iNO…

    Effects of inhaled nitric oxide during mechanical circulatory support: a prospective pilot study · 2026 · DOI

  • Initial mechanistic validation should incorporate reference measurements of aortic-root or coronary arterial oxygenation - Subsequent clinical feasibility studies could examine whether combinations of peripheral blood gases, NIRS, ECG, echocardiography, and ScsO₂ identify reproducible physiological…

    Selective coronary hypoxemia during VA-ECMO: limitations of peripheral oxygenation monitoring · 2026 · DOI

  • Mechanistic and machine learning approaches present a more fundamental shift in the approach to making progress in this field, - Incorporation of hemodynamic parameters like the pulmonary arterial pulsatile index may increase the accuracy of predictive…

    Prediction of Right Heart Failure in LVAD Candidates: Current Approaches and Future Directions · 2025 · DOI

  • Explore factors contributing to the association between psychosocial risk and disparities in LVAD outcomes for women and men - Consider both biological factors and gender-related factors - Investigate the role of behavioral risk factors such as obesity and smoking in clinical outcomes after LVAD…

    Psychosocial Risk and Recurrent Hospitalizations in Women and Men Following LVAD Implantation: A Multi-State Analysis of the INTERMACS Registry · 2025 · DOI

  • The main reported barrier for DTIs implementation was the lack of guidelines and published protocols…

    Current use and limitations of direct thrombin inhibitors in pediatric ECMO: A European survey · 2026 · DOI

Most-cited papers in Mechanical Circulatory Support Devices

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Open questions raised by papers listed on this page include: (1) The current evidence is limited by the lack of prospective studies evaluating the effects of inhaled nitric oxide in this patient population (“Effects of inhaled nitric oxide during mechanical circulatory support: a…”, 2026); (2) The lack of a validated diagnostic marker for selective coronary hypoxemia (“Selective coronary hypoxemia during VA-ECMO: limitations of peripheral…”, 2026); (3) There is a lack of systematic evaluation of mechanical circulatory support strategies in this population (“Comparative efficacy and safety of mechanical circulatory support in…”, 2026); (4) Multidisciplinary "CS teams" have demonstrated improved outcomes; however, data from low- and middle-income countries are scarce (“Building a Multidisciplinary Cardiogenic Shock Program in Latin America:…”, 2026); (5) Transthoracic echocardiography (TTE) is widely used for hemodynamic assessment, but its accuracy with estimating cardiac filling pressures and cardiac index in a cardiogenic shock (CS) population remains unclear (“OR3-16 | Comparative Analysis of Transthoracic Echocardiography and Right Heart…”, 2026). 608 gap statements have been mined from Mechanical Circulatory Support Devices papers in our 7.9M-paper local library, which holds 3,159 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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