Tundra Space

Tundra Space

Clinical Research Directory

Browse clinical research sites, groups, and studies.

69 clinical studies listed.

Filters:

Heart Failure With Reduced Ejection Fraction

Tundra lists 69 Heart Failure With Reduced Ejection Fraction clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

This data is also available as a public JSON API. AI systems and LLMs are encouraged to use it for structured queries.

RECRUITING

NCT06552637

Synchronized Diaphragmatic Stimulation in Symptomatic Heart Failure

RECOVER HF is a clinical study designed to evaluate the safety and efficacy of Synchronized Diaphragmatic Stimulation delivered using the VisONE System in the treatment of patients with heart failure.

Gender: All

Ages: 18 Years - Any

Updated: 2026-03-31

1 state

Heart Failure With Reduced Ejection Fraction
NOT YET RECRUITING

NCT07490067

Mechanistic Clinical Trial Comparing the Pharmacokinetics/Pharmacodynamics of Metoprolol in Heart Failure With Reduced Ejection Fraction Patients With Low vs. High Polygenic Score

The purpose of this trial is to better understand how the beta-blocker metoprolol works in people with Heart Failure with Reduced Ejection Fraction (HFrEF) according to participants genetics. Participants will have the beta-blocker (BB) polygenic score calculated from genotype data. The score will be used to stratify the patients in the low and high polygenic score groups in the study. The hypotheses for this trial are: * HFrEF patients with high polygenic score will have weaker cardiovascular responses to metoprolol succinate than HFrEF patients with low polygenic score. * HFrEF patients with high polygenic score have lower steady-state plasma concentrations of metoprolol succinate than HFrEF patients with low polygenic score. * HFrEF patients with high polygenic score require higher metoprolol succinate plasma concentrations to achieve similar cardiovascular effects as those with low polygenic score.

Gender: All

Ages: 18 Years - Any

Updated: 2026-03-24

1 state

Heart Failure With Reduced Ejection Fraction
ENROLLING BY INVITATION

NCT06195982

Ketones in Heart Failure With Reduced Ejection Fraction

The purpose of this study is to understand the effects of a ketone drink on exercise capacity and other cardiovascular parameters in patients with heart failure. In heart failure, patients are limited in their ability to do all the things they want to do, and exercise as much as they would like, due to becoming tired and short of breath early. There may be several reasons why these symptoms occur. This study is assessing whether the ketone drink can improve these symptoms. This drink has been given status by Food and Drug Administration as "generally regarded as safe". The use of DeltaG in this study is experimental. DeltaG has not been approved by the Food and Drug Administration (FDA) for the use being evaluated in this study.

Gender: All

Ages: 18 Years - Any

Updated: 2026-03-13

1 state

Heart Failure With Reduced Ejection Fraction
NOT YET RECRUITING

NCT07214376

A Randomized Placebo-procedure Controlled Trial of the Enhancor System (PULmonary Artery Denervation) to Evaluate Safety and Efficacy in Patients With Combined Pre- and Post-capillary Pulmonary Hypertension Associated With Left Heart Disease

The goal of this clinical study is to evaluate the safety and efficacy of percutaneous pulmonary artery denervation with the Multi-Pole Pulmonary Artery Radiofrequency Ablation Enhancor System in patients with combined pre- and post-capillary pulmonary hypertension (CpcPH) associated with left heart disease (LHD). This randomized control trial will compare the investigational device (The Enhancor System) to control (medical therapy.) Participants who will consist of patients with chronic heart failure (HF) who are receiving maximally tolerated guideline-directed medical therapy (GDMT) for left heart failure, are clinically stable, and who have been diagnosed with CpcPH by right heart catheterization (RHC), will be treated with PADN and followed for 3 years.

Gender: All

Ages: 18 Years - 85 Years

Updated: 2026-03-12

Pulmonary Hypertension
Heart Failure With Reduced Ejection Fraction
Hypertension
+5
ACTIVE NOT RECRUITING

NCT07465679

A Real-world Study of Clinical Treatment Guidelines for Patients With Heart Failure With Reduced Ejection Fraction Treated With Sacubitril/Valsartan

The aim of this study is to describe the real-world clinical profile, treatment patterns, and guideline alignment of patients with heart failure with reduced ejection fraction (HFrEF) treated with sacubitril/valsartan in routine clinical practice in Romania. The study uses secondary use of data, with all analyses conducted on anonymized, pre-existing data collected for routine clinical and administrative purposes.

Gender: All

Ages: 18 Years - Any

Updated: 2026-03-12

Heart Failure With Reduced Ejection Fraction
NOT YET RECRUITING

NCT07465653

A Safety and Tolerability Study of HJB647 in Heart Failure Participants With Reduced Ejection Fraction

The purpose of this study is to evaluate the safety, tolerability, and pharmacokinetics of HJB647 at two different doses in participants with chronic stable heart failure with reduced or mildly reduced ejection fraction (HFrEF/HFmrEF).

Gender: All

Ages: 18 Years - 100 Years

Updated: 2026-03-12

Heart Failure With Reduced Ejection Fraction
RECRUITING

NCT04237701

Real-Time Monitoring of Heart Failure Across the Yale New Haven Health System

The Yale HF Registry is a live EHR based registry that allows for retrospective and real-time monitoring of Heart Failure case across the Yale New Haven Health System.

Gender: All

Ages: 18 Years - Any

Updated: 2026-03-05

1 state

Heart Failure
Heart Failure With Reduced Ejection Fraction
Heart Failure With Preserved Ejection Fraction
+1
RECRUITING

NCT07275931

Digital Support Program for Patients With Heart Failure - a Cluster-Randomized Hybrid Type 2 Study

The overall aim of this project is to evaluate the effects of a digital support program for patients with heart failure through a cluster-randomized controlled trial, and to investigate the outcomes of different implementation strategies using the RE-AIM (Reach, Effectiveness, Adoption, Implementation, Maintenance), PRISM (Practical, Robust Implementation and Sustainability Model) and ERIC (Expert Recommendations for Implementing Change) framework. Our primary hypothesis is that the digital support program will improve patients' perceived control over their heart failure, measured with the validated Control Attitude Scale. Secondary hypotheses are that the program will increase patients' health-related quality of life, self-care behaviors, heart failure knowledge, perceived continuity of care, and participation in care, and reduce symptoms of depression. Implementation aim (based on the RE-AIM, PRISM and ERIC frameworks) The implementation component of the study aims to compare two different implementation strategies: a standard (basic) support package versus a tailored, context-specific support strategy. Heart failure clinics at hospitals an within primary care will be matched and randomized into two arms. The intervention arm will receive tailored implementation support to implement the support program. The control arm will recive implementation support according to a predefined standard procedure. Researchers will compare the intervention arm with control arm to see if there are any differences regarding the implementationsuccess between the arms. The patients in both arms will have access to the support program during six months.

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-27

1 state

Heart Failure With Reduced Ejection Fraction
RECRUITING

NCT06128980

Withdrawal of Treatment for Heart Failure Patients With Recovery From Tachycardia-induced Cardiomyopathy

New onset heart failure (HF) is observed in up to 25% of patients with incident atrial fibrillation or flutter (AF). Current guidelines suggest that both conditions (AF \& HF) be addressed with guideline directed medical therapy (GDMT) for HF and rate or rhythm control of AF. Hence, patients with both conditions are subjected to extensive polypharmacy with possible prognostic benefits, but also possible side effects, such as decreased renal function, dizziness, tiredness and hypotension, as well as the financial burden on both the individual patients and society, in addition to the stigma of having a HF diagnosis. Guidelines do not inform how to manage long-term patients with HF, who following control of the incident tachycardia (e.g. AF), show full recovery from their HF condition. This investigator-initiated, open-label, randomized, non-inferiority trial will test whether incremental weaning of GDMT in patients following full cardiac recovery and AF control is non-inferior compared to continuous GDMT with respect to the primary endpoint of freedom from heart failure deterioration. Furthermore, this study seeks to extensively phenotype these patients (genetic testing, advanced imaging, biomarkers etc.) in order to establish whether certain phenotypes are at lesser or greater risk of deterioration once remission is established. This novel approach of a personalized treatment regimen depending on e.g. genetic profiling could lead to an aggressive treatment in patients at high risk of deterioration and conversely spare patients with a negligible risk, a life-long intensive treatment regimen. All HF clinics located in Zealand, Denmark, with a catchment area of \>2 million citizens, have agreed to participate in the WEAN-HF trial. A total of 348 patients will be randomized. Patients are followed up the 1st year after randomization with clinical examination, biomarkers and echocardiography, and are subsequently followed via Danish nationwide registries for 10 years.

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-23

Heart Failure With Reduced Ejection Fraction
Heart Rhythm Disorder
RECRUITING

NCT06736574

Study With Omecamtiv Mecarbil (CK-1827452) to Treat Chronic Heart Failure With Severely Reduced Ejection Fraction

The purpose of this study is to find out if the investigational drug called omecamtiv mecarbil can reduce the risk of the effects of heart failure, like hospitalization, transplantation, or death in patients with heart failure and severely reduced ejection fraction.

Gender: All

Ages: 18 Years - 85 Years

Updated: 2026-02-17

77 states

Heart Failure
Heart Failure With Reduced Ejection Fraction
RECRUITING

NCT06229678

Ketones, SGLT2, HFrEF

The study team will examine the effects of elevated plasma ketone levels following initiation of SGLT2 inhibitor therapy in high-risk type 2 diabetes mellitus (T2DM) individuals with heart failure (HF) with reduced ejection fraction (HFrEF) providing an energy-rich fuel that is taken up with great avidity by the myocardium, to measure change in Left Ventricle diastolic and systolic function

Gender: All

Ages: 18 Years - 70 Years

Updated: 2026-02-05

1 state

Type2diabetes
Heart Failure With Reduced Ejection Fraction
NOT YET RECRUITING

NCT07349979

PCI With Guideline-Directed Medical Therapy for HFpEF Patients With Ischemic Cardiomyopathy

To evaluate whether percutaneous coronary intervention (PCI) with contemporary drug-eluting stents (DES) combined with guideline-directed medical therapy (GDMT), compared to GDMT alone, reduces the time to first occurrence of major adverse cardiovascular events (MACE) through 12 months in patients with ischemic cardiomyopathy and a left-ventricular ejection fraction (LVEF) ≤40%. MACE is a composite of cardiovascular \[CV\] death, spontaneous myocardial infarction (MI), any unplanned revascularization, heart failure (HF)-related rehospitalization, heart transplantation, requirement of device implantation (e.g., valvular treatment, pacemaker, or left ventricular assist device \[LVAD\]), or requirement of intravenous medications due to worsening heart failure in outpatients.

Gender: All

Ages: 18 Years - Any

Updated: 2026-01-21

1 state

Heart Failure With Reduced Ejection Fraction
Coronary Artery Disease
NOT YET RECRUITING

NCT07352891

Digital Remote Management for Care and Continuous Optimization Versus Usual Care to Improve Prognosis in Patients With Heart Failure With Reduced Ejection Fraction

DigiCare-HFrEF is an investigator-initiated, multicentre, randomised, open-label, endpoint-blinded, superiority trial designed to evaluate whether a structured digital remote-management platform can improve clinical outcomes in patients with heart failure with reduced ejection fraction (HFrEF) after hospital discharge. Eligible adults with LVEF ≤40% within past 3 months, NYHA class II-IV, and elevated natriuretic peptides (NT-proBNP \>2500 pg/mL or BNP \>600 pg/mL) will be randomly assigned (1:1) to digital remote management or to usual care. In the intervention arm, patients will report symptoms and key physiologic measures (e.g., blood pressure and body weight) via the platform; an algorithm will perform risk stratification and generate guideline-directed medical therapy (GDMT) optimisation suggestions and decongestion prompts, as well as a comprehensive management for core health metrics, which are reviewed and confirmed by clinicians before implementation. The primary endpoint is the composite of cardiovascular death or first heart-failure event (hospitalisation or urgent visit for heart failure) at 12 months.

Gender: All

Ages: 18 Years - Any

Updated: 2026-01-20

Heart Failure With Reduced Ejection Fraction
RECRUITING

NCT06299436

Hemodynamic Assessment of underLying myocyTe Function in Right Heart Failure

Right ventricular (RV) failure is recognized to worsen patient outcomes in the setting of heart failure with reduced ejection fraction (HFrEF)-related pulmonary hypertension (PH), yet the investigators fall short in trying to identify and treat it. The current proposal will (1) determine the best clinical indicators of intrinsic RV myocyte contractile failure in humans with HFrEF-PH, (2) clarify underlying mechanisms, and (3) test novel treatments on RV myocytes. The long-term goal of this proposal will be to better identify and treat RV failure in humans suffering from HFrEF-PH.

Gender: All

Ages: 18 Years - 90 Years

Updated: 2026-01-12

1 state

Heart Failure With Reduced Ejection Fraction
Pulmonary Hypertension
Right Heart Failure Due to Left Heart Failure
RECRUITING

NCT06543446

Comparative Effectiveness of Prophylactic ICD Versus Non-ICD Therapy

The investigators aim to compare the risk of mortality of Non-implantable carioverter defibrillator (ICD) vs. ICD management in patients with heart failure with reduced ejection fraction (HFrEF).

Gender: All

Ages: 18 Years - Any

Updated: 2026-01-09

11 states

Heart Failure With Reduced Ejection Fraction
ENROLLING BY INVITATION

NCT07283666

Subspecialty Ambulatory Quality Cardiology Program

Investigators will evaluate the effectiveness of an audit and feedback performance improvement strategy in which cardiology providers receive quarterly emails on ambulatory quality improvement goals.

Gender: All

Ages: 18 Years - 90 Years

Updated: 2025-12-16

1 state

Heart Failure With Reduced Ejection Fraction
Atrial Fibrillation
RECRUITING

NCT03480633

Biomechanical Precision Medicine Registry for Patients With and Without Heart Failure

In this single-center, longitudinal observational study, we will comprehensively examine clinical characteristics, proteomic, metabolomic, genomic and imaging data to better understand how different heart failure types may develop and progress over time. We will evaluate distinct sub-groups of heart failure (also known as heart failure phenotypes) and cardiomyopathies including amyloidosis with an ultimate goal of bringing the right medications and therapy to the right patients to optimize benefit and minimized side effects, an effort to improve precision medicine in heart failure.

Gender: All

Ages: 18 Years - Any

Updated: 2025-12-09

1 state

Heart Failure With Normal Ejection Fraction
Heart Failure With Reduced Ejection Fraction
Heart Failure, Right Sided
+2
RECRUITING

NCT06942221

Digital Solutions in Heart Therapy (DIGNITY)

This study aims to assess the safety and effectiveness of telemedicine guided strategy on guideline-directed medical therapy (GDMT) optimization in hospitalized patients with heart failure in comparison to usual care in Switzerland.

Gender: All

Ages: 18 Years - Any

Updated: 2025-12-02

Heart Failure With Reduced Ejection Fraction
NOT YET RECRUITING

NCT07238452

Optimising Pacing Therapy, Integrated Medical Therapy, and Catheter AbLation for Atrial Fibrillation in Heart Failure Trial

Atrial Fibrillation (AF) and Heart Failure (HF) are colliding global cardiovascular epidemics, individually impairing quality of life and cardiac performance, as well as increasing the risk of hospitalisation and mortality. When AF and HF co-exist, disease progression accelerates and the adverse outcomes are magnified, leading to incrementally higher morbidity, mortality, and healthcare expenditure. The management of AF has been dichotomised into the restoration and maintenance of sinus rhythm ("Rhythm control") or acceptance of AF with control of the ventricular response ("Rate control"). Previous studies suggested that pharmacologic rhythm control and pharmacologic rate control confer similar survival and morbidity outcomes in patients with significant left ventricular dysfunction. Recognising the limitations of pharmacotherapy, more recent studies have examined the utility of catheter ablation procedures, either designed to restore and maintain sinus rhythm (e.g., catheter-based pulmonary vein isolation) or control the ventricular response (e.g., pacemaker implantation in combination with catheter ablation of the atrioventricular junction). Compared to pharmacotherapy, these studies have suggested that catheter ablation may provide sustained improvements in quality of life, decreased hospitalisation and, potentially, improved survival for patients with co-existing AF and HF. However, these studies were performed prior to the modern era of quadruple LV enhancing therapy (beta-blocker, an angiotensin receptor-neprilysin inhibitor, mineralocorticoid receptor antagonist, and an SGLT2 inhibitor). The true impact of catheter-based interventions, and thus the optimal management of AF for patients with co-existing HF is not known. The investigators propose a randomised controlled trial to definitively answer the question regarding the optimal invasive treatment of AF in patients with heart failure with reduced ejection fraction (HFrEF - LVEF ≤ 40%).

Gender: All

Ages: 19 Years - Any

Updated: 2025-11-28

Heart Failure With Reduced Ejection Fraction
Atrial Fibrillation (AF)
ACTIVE NOT RECRUITING

NCT03345446

Circulating RNAs in Acute Congestive Heart Failure

The purpose of this American Heart Association-funded and NIH-funded study is to examine circulating RNAs in the acute CHF setting, how they change with decongestive therapy, and their function in vitro and in vivo. The investigators are testing the hypothesis that ex-RNA levels change significantly during decongestion therapy and can be used as a marker of those individuals who respond to CHF therapy (in terms of cardiac structure or outcome). Additionally, the translational research design allows the investigators to assay the effects of these RNAs on tissue phenotypes in vitro.

Gender: All

Ages: 18 Years - Any

Updated: 2025-10-23

1 state

Acute Congestive Heart Failure
Heart Failure With Reduced Ejection Fraction
Heart Failure With Normal Ejection Fraction
RECRUITING

NCT05650658

Left vs Left Randomized Clinical Trial

The investigators aim to prospectively test the comparative effectiveness of His or Left bundle branch pacing in relation to patient centered outcomes (quality of life, physical activity, heart failure hospitalization, mortality) and comparative safety in relation to device-related complications and re-interventions (e.g., lead dislodgement, infection) relative to standard of care biventricular pacing in patients with heart failure due to left ventricular systolic dysfunction (LVEF≤50%) and with either a wide QRS (≥130 ms) or with/anticipated \>40% pacing who are already receiving current standard heart failure pharmacological therapy.

Gender: All

Ages: 18 Years - Any

Updated: 2025-10-02

29 states

Heart Failure
Heart Failure With Reduced Ejection Fraction
AV Block
+4
RECRUITING

NCT06859970

An Early Feasibility Study Evaluation of an Implant Free Interatrial Shunt to Improve Heart Failure

The purpose of this early feasibility study is to evaluate the safety and feasibility of the device for percutaneous shunting of the interatrial septum and improvement of heart failure related symptoms. The primary goal is to determine if the device is safe to use. The findings from this study may be used to refine the intended patient population, the design of the device, or develop a subsequent randomized study.

Gender: All

Ages: 40 Years - 85 Years

Updated: 2025-09-26

5 states

Heart Failure
Heart Failure NYHA Class III
Heart Failure With Reduced Ejection Fraction
+1
RECRUITING

NCT07086131

A Study Investigating the Impact of IMT With CR On Exercise Responses In HF

The purpose of this study is to compare the impact of inspiratory muscle training (IMT) combined with cardiac rehabilitation (CR) on cardiovascular function in patients with heart failure.

Gender: All

Ages: 18 Years - Any

Updated: 2025-09-25

1 state

Heart Failure With Reduced Ejection Fraction
RECRUITING

NCT06479876

Home-Based Cardiac Rehabilitation for Patients With Heart Failure

The vast majority of individuals with heart failure do not participate in center based cardiac rehabilitation (CBCR). While steps to increase utilization of CBCR are important, many individuals will still not participate for a variety of reasons. This pilot randomized controlled trial is evaluating a home-based cardiac rehabilitation (HBCR) intervention delivered using a custom app and digital tools in patients with heart failure. After a brief roll-in period, participants are randomized to one of two groups: (1) control or (2) HBCR mobile health intervention. The intervention targets key health behaviors and includes traditional cardiac rehabilitation components. The study will assess the effect of the intervention on physical activity, quality of life, clinical events, and other outcomes.

Gender: All

Ages: 18 Years - Any

Updated: 2025-09-24

1 state

Heart Failure With Preserved Ejection Fraction
Heart Failure With Reduced Ejection Fraction
Cardiovascular Diseases