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Open research questions in Cardiac Arrhythmias and Treatments

376 gap statements mined from Cardiac Arrhythmias and Treatments papers in our 7.9M-paper local library, which holds 2,534 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

  • Adjunctive intracardiac echocardiography may improve procedural guidance and facilitate early detection of impending overheating,10 although its ability to fully prevent steam pops remains uncertain.

    Latrogenic Ventricular Septal Defect Following Papillary Muscle PVC Ablation: A Case Report · 2026 · DOI

  • When the mechanism remains uncertain, persistence of tachycardia with unchanged ventricular rate and QRS morphology despite adenosine-unmasked atrioventricular dissociation should prompt reconsideration of a ventricular origin.

    Case Report: Upper septal fascicular ventricular tachycardia mimicking supraventricular tachycardia: diagnostic pitfalls and mapping-guided ablation · 2026 · DOI

  • C_LIO_LIClinical evidence is specific to the catheter platform and energy-delivery protocol, and the incremental benefit of sequential RF and PF delivery remains uncertain.

    Dual-Energy Pulsed Field and Radiofrequency Ablation With a Contact Force-Sensing Focal Catheter for Ventricular Arrhythmias: Initial Clinical Experience · 2026 · DOI

  • There is a lack of standardized protocol for optimal energy delivery in AVNRT ablation. The optimal RF power settings for AVNRT ablation are not well established. There is a need for studies evaluating the efficacy and safety of low-power ablation strategies.

    Efficacy and safety of low-power (20 W) catheter ablation for typical atrioventricular nodal reentrant tachycardia: a prospective multicenter study · 2026 · DOI

  • These findings provide actionable insights for optimizing ED management of SVT and warrant further investigation into individualized treatment approaches based on patient-specific predictors.

    Exploring Treatment Protocol Adherence and Variations in Paroxysmal Supraventricular Tachycardia in the Emergency Department: A Multi-Center Cohort Study · 2025 · DOI

  • Lastly, while NT-proBNP reductions were significant, variabil-ity among patients warrants further investigation to identify factors influencing these results.

    Impact of Catheter Ablation on Functional Capacity and Cardiac Stress Markers in Patients with Premature Ventricular Contractions · 2025 · DOI

  • Future study is needed to continue improving the diagnosis and management of LQTS in the fetus. Although fMCG has proven to be a reliable diagnostic method to identify prolonged QT interval in utero, it is not widely available at this time.

    The Prenatal Diagnosis and Perinatal Management of Congenital Long QT Syndrome: A Comprehensive Literature Review and Recent Updates · 2025 · DOI

  • Although the underlying mechanisms remain unclear, the influence of sex hormones—particularly their effects on cardiac ion channels—has been proposed as a contributing factor. Further research is necessary to build upon our findings. Women and heart disease, the underrecognized burden: Sex differences, biases, and unmet clinical and research challenges.

    Specific Premature Ventricular Complex Characteristics in Women: Insights from a Patient Cohort · 2025 · DOI

  • Future research should focus on validating these results in larger, prospective, controlled trial groups and on comparing universal modeling with different types of EAM techniques.

    Optimization of Outflow-Tract Ventricular Arrhythmia Ablation Using a Universal Right Ventricle Model · 2025 · DOI

  • However, studies exploring preoperative electrophysiology in pediatric CHD are scarce, and existing studies are constrained by small sample sizes, the lack of age-matched controls, and limited access to human tissue.

    Early Currents: Developmental Electrophysiology and Arrhythmia in Pediatric Congenital Heart Disease · 2025 · DOI

  • Future studies are warranted to validate these findings, refine procedural endpoints, and standardize techniques that may ultimately redefine the therapeutic paradigm for patients requiring definitive AV nodal ablation.

    Atrioventricular Junction Ablation with High-Definition Recording of Atrioventricular Node Potential · 2025 · DOI

  • In conclusion, while our findings provide valuable insights into neonatal arrhythmias, further prospective studies with larger patient populations are warranted to more comprehensively evaluate risk factors and elucidate determinants contributing to increased mortality.

    Clinical Evaluation of Neonatal Arrhythmias: Experience from a Specialized Pediatric Cardiac Center · 2026 · DOI

  • The relationship between the initial and recurrent tachycardias remains uncertain.

    Case Report: Upper septal fascicular ventricular tachycardia mimicking supraventricular tachycardia: diagnostic pitfalls and mapping-guided ablation · 2026 · DOI

  • Notably, analogous large-scale studies have not yet been reported in the pediatric population.

    Prognosis of Pediatric Dilated Cardiomyopathy: Nomogram and Risk Score Models for Predicting Death/Heart Transplantation · 2025 · DOI

  • Detailed characterization of arrhythmias can be performed by multiple catheter mapping; but this has not yet been explored in horses.

    Multiple Catheter Recording in Horses to Investigate Atrial Depolarization Pattern During Sinus Rhythm and Induced Premature Atrial Complexes · 2025 · DOI

  • This condition is well described in humans and small animals, but has not been reported previously in horses.

    Orthodromic Atrioventricular Reentry Bradycardia and Tachycardia Caused by an Accessory Pathway in Horses · 2025 · DOI

  • Although stellate ganglion ablation (SGA) has emerged as a promising therapy, manily in electric storm —as acknowledged in current guidelines—, it remains positioned at a lower tier within clinical algorithms, and existing evidence is limited.

    Taming ventricular tachycardia: experience of stellate ganglion ablation across the spectrum of ventricular arrhythmias, a safe and effective intervention beyond the electrical storm · 2025 · DOI

  • Arterial sources other than the main AVN artery branching near the cardiac crux-such as the Bonapace's septal branch or Kugel's collateral artery-have often been overlooked or regarded as atypical and remain poorly characterised.

    Anatomical characterisation of an additional atrioventricular node artery contributing to the arterial complex of proximal conduction components: Bonapace’s septal branch or Kugel’s collateral artery · 2025 · DOI

  • Advanced catheter ablation using three-dimensional electroanatomic mapping (EAM) has shown favorable outcomes in high-income countries, but real-world evidence from low- and middle-income settings is scarce.

    Effectiveness and Safety of Radiofrequency Catheter Ablation Using Three-Dimensional Electroanatomic Mapping Systems in Treating Ventricular Arrhythmias: A Single-Center Prospective Cohort Study in Vietnam · 2025 · DOI

  • However, these outcome data have not been evaluated in relation to the presence or absence of a dilated left atrium (LA).

    The outcomes of patients with septic shock treated with propafenone compared to amiodarone for supraventricular arrhythmias are related to end-systolic left atrial volume · 2024 · DOI

  • In light of the above, it is clear that transcatheter ablation procedures can be made more accurate and safer through a more accurate assessment of the anatomical structures responsible for arrhythmia and their relationship with adjacent structures.

    Atrioventricular Junction Ablation with High-Definition Recording of Atrioventricular Node Potential · 2025 · DOI

  • Also, the duration of follow-up varied widely, which may influence the likelihood of observing spontaneous resolution, particularly in patients with shorter follow-up intervals.

    Spontaneous resolution of idiopathic ventricular arrhythmias in children: clinical predictors and a probability-based scoring system · 2026 · DOI

  • However, these catheterizations have been poorly explored in horses because apart from 3-dimensional (3D) mapping systems, continuous guidance of the catheter's position with adequate detail is difficult using current imaging modalities.

    Feasibility of transthoracic echocardiographic guidance for multicatheter electrophysiological mapping studies in horses · 2024 · DOI

  • Only three centers participated in the study, - Center-level clustering was not modeled due to limited data, - Some variables could not be entered into the multivariable model due to complete separation or absence…

    Efficacy and safety of low-power (20 W) catheter ablation for typical atrioventricular nodal reentrant tachycardia: a prospective multicenter study · 2026 · DOI

  • Further investigation is needed to elucidate the potential clinical application of NHD, - The development of nasal formulations of antianginal drugs, beta-blockers, calcium-channel blockers, and their pharmacokinetic or pharmacodynamic patterns in animal models should be further studied, - The clinical potential of the nose-to-heart approach should be further explored, - The effectiveness and safety of the IN route…

    Nose-to-Heart Approach: Unveiling an Alternative Route of Acute Treatment · 2024 · DOI

Most-cited papers in Cardiac Arrhythmias and Treatments

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Open questions raised by papers listed on this page include: (1) There is a lack of standardized protocol for optimal energy delivery in AVNRT ablation (“Efficacy and safety of low-power (20 W) catheter ablation for typical…”, 2026); (2) Future study is needed to continue improving the diagnosis and management of LQTS in the fetus (“The Prenatal Diagnosis and Perinatal Management of Congenital Long QT Syndrome:…”, 2025); (3) Although the underlying mechanisms remain unclear, the influence of sex hormones—particularly their effects on cardiac ion channels—has been proposed as a contributing factor (“Specific Premature Ventricular Complex Characteristics in Women: Insights from…”, 2025); (4) Future research should focus on validating these results in larger, prospective, controlled trial groups and on comparing universal modeling with different types of EAM techniques (“Optimization of Outflow-Tract Ventricular Arrhythmia Ablation Using a Universal…”, 2025); (5) Studies exploring preoperative electrophysiology in pediatric CHD are scarce, and existing studies are constrained by small sample sizes, the lack of age-matched controls, and limited access to human tissue (“Early Currents: Developmental Electrophysiology and Arrhythmia in Pediatric…”, 2025). 376 gap statements have been mined from Cardiac Arrhythmias and Treatments papers in our 7.9M-paper local library, which holds 2,534 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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