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Open research questions in Cardiac pacing and defibrillation studies

109 unresolved questions extracted from the limitations and future-work sections of 529 Cardiac pacing and defibrillation studies papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Further studies are needed to evaluate the long-term outcomes of LBBAP in paediatric patients. Research on the application of LBBAP in complex congenital heart disease is necessary. Investigations into the effects of LBBAP on ventricular function and pacing outcome are required.

    Left bundle branch area pacing in children: a systematic review and meta-analysis of feasibility, safety, and outcomes · 2026 · DOI

  • There is a lack of literature regarding the application of LBBAP in pediatric patients. Prior studies on LBBAP in children are limited to case reports and small, single-centre retrospective cohorts.

    Left bundle branch area pacing in children: a systematic review and meta-analysis of feasibility, safety, and outcomes · 2026 · DOI

  • Lead-related complications are the leading cause of reintervention after pacemaker implantation. Atrial lead dislodgement may remain clinically silent, particularly in patients with preserved intrinsic rhythm or a functioning ventricular lead. The optimal pacing strategy may change when lead-related mechanical complications occur.

    Case Report: Double-click on the ventricle: ventricular safety pacing triggered by right atrial lead dislodgement in a patient after right atrial tumor resection · 2026 · DOI

  • emerging approaches to improve pacing management in patients with reconstructed RA, - individualized positioning of the atrial pacing lead guided by mapping of Bachmann's bundle

    Case Report: Double-click on the ventricle: ventricular safety pacing triggered by right atrial lead dislodgement in a patient after right atrial tumor resection · 2026 · DOI

  • However transjugular venous implantation of the Aveir leadless pacemaker in a pediatric patient with mitochondrial disease has not been previously reported.

    Case Report: Aveir implantation in an 8.7-year-old, 25-kg pediatric patient with mitochondrial disease via internal jugular vein · 2025 · DOI

  • OBJECTIVE: Data and guidelines are lacking, so implantable cardioverter-defibrillators (ICDs) are often deactivated during labour to prevent inappropriate shocks.

    Is it safe to give birth with an activated implantable cardioverter–defibrillator: A multicentre observational study · 2024 · DOI

  • In this review, we explore the current evidence, guidelines, limitations, gaps in knowledge, and ongoing trials comparing CSP and BiVP for the management of HFrEF with electrical dyssynchrony.

    Conduction system pacing versus biventricular pacing in heart failure with reduced ejection fraction and electrical dyssynchrony · 2024 · DOI

  • This may be a more advantageous physiological pacing configuration, warranting further investigation and application in the future.

    Six transition patterns and seven capture types in different left bundle branch bipolar pacing configurations · 2024 · DOI

  • Investigate the effects of RVP on cardiac structure and function in a larger, multicenter study - Examine the relationship between VP burden and clinical outcomes in patients with different underlying cardiac conditions - Develop and validate a uniform definition of PICM

    Left Ventricular Global Longitudinal Strain Predicts Pacemaker-Associated Cardiomyopathy with Substantial LVEF Deterioration: Results from a Retrospective Single-Center Cohort Study in Germany · 2026 · DOI

  • Further studies are needed to evaluate the long-term safety and efficacy of TTE-guided LP implantation. The development of new technologies and techniques to improve the TTE-guided approach. The comparison of TTE-guided LP implantation with other approaches, such as fluoroscopy-guided implantation.

    Safety and efficacy of completely transthoracic echocardiography guided leadless pacemaker implantation assisted by Panna guide wire: initial clinical experience · 2026 · DOI

  • The lack of a radiation-free alternative for leadless pacemaker implantation. The need for a novel approach to reduce the risks associated with fluoroscopy and contrast. The gap in current research is the development of a safe and effective TTE-guided approach for leadless pacemaker implantation.

    Safety and efficacy of completely transthoracic echocardiography guided leadless pacemaker implantation assisted by Panna guide wire: initial clinical experience · 2026 · DOI

  • Estudos adicionais sobre a utilização de marcapassos sem eletrodos - Análise de longo prazo dos resultados dos pacientes com marcapassos sem eletrodos - Desenvolvimento de novas tecnologias para reduzir complicações em implantes de marcapassos

    Marcapasso sem eletrodo (Micra) como alternativa às complicações do marcapasso convencional: relato de caso · 2026 · DOI

  • There is a need to evaluate the cost-effectiveness of cardiac resynchronization therapy in multiple healthcare settings and patient populations. The cost-effectiveness of cardiac resynchronization therapy varies across different healthcare settings and patient populations.

    Global evidence on the cost-effectiveness of cardiac resynchronization therapy for heart failure: a systematic review · 2026 · DOI

  • The study excludes patients with wide QRS or pre-existing cardiac implantable electronic devices. The study has a modest sample size. The study is limited by its observational design.

    Prognostic Value of Mid-Range QRS Duration in Patients With Heart Failure With Reduced Ejection Fraction · 2026 · DOI

  • The prognostic value of mid-range QRS duration is not well understood. Prior studies have linked mid-range QRS to worse outcomes, but the relationship is not well characterized.

    Prognostic Value of Mid-Range QRS Duration in Patients With Heart Failure With Reduced Ejection Fraction · 2026 · DOI

  • The composition, pathogenesis, significance, and management of intracardiac 'ghosts' are not well understood. There is a need for further research on the diagnosis and management of intracardiac 'ghosts'.

    Intracardiac "Ghost" Following Implantable Cardioverter-Defibrillator (ICD) Explantation: The Role of Multimodality Imaging in Diagnosis and Management · 2026 · DOI

  • Future research should focus on developing standardized workflows and reimbursement models for remote CIED monitoring. The role of artificial intelligence in remote monitoring should be further investigated. The impact of remote CIED monitoring on patient outcomes and healthcare utilization should be studied.

    Integrating remote CIED monitoring into heart failure care: evidence, challenges, and opportunities · 2026 · DOI

  • There is a lack of standardized workflows and reimbursement models for remote CIED monitoring. Data latency and inconsistent response strategies introduce bias in remote monitoring. Gaps persist in enrollment coordination, maintenance of connectivity, and device programming for optimal remote monitoring.

    Integrating remote CIED monitoring into heart failure care: evidence, challenges, and opportunities · 2026 · DOI

  • There is a need for a comprehensive overview of sinus node dysfunction, including its pathophysiological mechanisms and clinical management. The review aims to provide a conceptually grounded exploration of SND.

    Sinus Node Dysfunction: From Pathophysiological Mechanisms to Clinical Management—A Comprehensive Overview · 2026 · DOI

  • Diagnostic evaluation is approached as a hierarchical process: establishing the necessary correlation between symptoms and electrocardiographic findings, utilizing exercise stress testing and ambulatory monitoring when initial evaluation is inconclusive, and systematically excluding reversible causes.

    Sinus Node Dysfunction: From Pathophysiological Mechanisms to Clinical Management—A Comprehensive Overview · 2026 · DOI

  • Conduction system pacing may be limited by unstable capture thresholds or technical complexity. There is a need for a practical septal pacing strategy that prioritizes narrow paced QRS and stable pacing parameters.

    Practical Septal Pacing for Atrioventricular Block ― A Simplified Septal Strategy With Stable Thresholds Compared With His Bundle Pacing ― · 2026 · DOI

  • High rates of morbidity, death, and hospitalization. Limited treatment options for patients who remain symptomatic despite optimal medical therapy. Need for additional therapies to improve quality of life and functional status.

    Impact of Cardiac Contractility Modulation on Left Ventricular Ejection Fraction and Clinical Outcomes in Heart Failure: A Systematic Review and Meta-Analysis · 2026 · DOI

  • The risk of publication bias is still very much a possibility. The study had a limited number of included studies for some variables. The follow-up duration ranged from 12 to 72 weeks, which may not be sufficient to capture long-term effects.

    Impact of Cardiac Contractility Modulation on Left Ventricular Ejection Fraction and Clinical Outcomes in Heart Failure: A Systematic Review and Meta-Analysis · 2026 · DOI

  • No officially approved alternative venous route exists for leadless pacemaker implantation. The lack of appropriately sized covered stents limited the approach.

    All roads lead to the heart, but not always. A complex case of a hemodialysis patient requiring permanent cardiac pacing, with no vascular access for either conventional or leadless pacemaker implantation · 2026 · DOI

  • There is a lack of officially approved alternative venous routes for leadless pacemaker implantation. Managing polyvascular patients with multiple comorbidities is challenging.

    All roads lead to the heart, but not always. A complex case of a hemodialysis patient requiring permanent cardiac pacing, with no vascular access for either conventional or leadless pacemaker implantation · 2026 · DOI

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109 open questions have been extracted from the limitations and future-work passages of 529 Cardiac pacing and defibrillation studies papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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