Synchronized Diaphragmatic Stimulation in Symptomatic Heart Failure

NCT ID: NCT06552637

Last Updated: 2025-09-04

Basic Information

• Recruitment Status: NOT_YET_RECRUITING
• Clinical Phase: NA
• Total Enrollment: 270 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-10-15
• Study Completion Date: 2027-12-31

Brief Summary

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.

Detailed Description

Symptomatic Diaphragmatic Stimulation (SDS) is a novel extra-cardiac device for patients who have symptomatic heart failure. Elevated intracardiac pressures are the hallmark of heart failure (HF) and a key pathological driver of disease progression and limited exertional capacity. The degree of cardiac pressure elevation is determined by preload, afterload, and pericardial restraint. The pericardium restrains the heart, and the degree of restraint is determined by the pericardial structure itself and the intrathoracic pressure. This aspect of HF pathophysiology is among the fundamental drivers behind the SDS therapy concept. SDS induces a temporal modulation of intrathoracic pressure.. When synchronized with the cardiac cycle, SDS may improve cardiac filling, cardiovascular pressure conditions, and cardiac performance

RECOVER HF is a prospective, randomized, doubled-blinded study of Synchronized Diaphragmatic Stimulation (SDS) delivered in an imperceptible manner in subjects with heart failure defined as New York Heart Association (NYHA) functional class II/III, left-ventricular ejection fraction (LVEF) <=40%, and QRS duration <=130ms despite receiving the appropriate heart failure guideline directed medical therapy (GDMT). All subjects will receive an implanted VisONE System. Two-weeks post implant subjects will be randomized in a 1:1 ratio into a SDS therapy active or control (SDS therapy inactive) arm with both arms receiving GDMT. At 6 months the control arm will have SDS therapy activated with all patients receiving therapy and GDMT throughout the remainder of the study period. The study will be conducted at up to 30 investigational sites in the United States and several outside the U.S. These centers will enroll subjects with the goal of randomizing approximately 270 subjects who meet the entry criteria.

Conditions

Heart Failure With Reduced Ejection Fraction

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: QUADRUPLE

Study Groups

Device and Medical Management

• Subjects will be implanted with the VisONE System programmed to deliver SDS (Therapy On) and receive optimal, stable, Guideline Directed Medical Therapy (GDMT) for heart failure (American Heart Association [AHA] / American College of Cardiology [ACC] guidelines) including those drugs to be determined by the subject's physician
• Assigned Interventions:

• Device: VisONE System (SDS)
• Drug: Medical Management

Group Type: EXPERIMENTAL

Synchronized Diaphragmatic Stimulation

Intervention Type: DEVICE

Implantable Pulse Generator system providing cardiac-gaited stimulation of the diaphragm and thereby influence cardiovascular properties relevant in heart failure.

Medical Management

• Subjects will be implanted with the VisONE System programmed not to deliver SDS (Therapy Off) and receive optimal, stable, Guideline Directed Medical Therapy (GDMT) for heart failure (American Heart Association [AHA] / American College of Cardiology [ACC] guidelines) including those drugs to be determined by the subject's physician
• Assigned Interventions:

• Drug: Medical Management

Group Type: SHAM_COMPARATOR

Synchronized Diaphragmatic Stimulation

Intervention Type: DEVICE

Implantable Pulse Generator system providing cardiac-gaited stimulation of the diaphragm and thereby influence cardiovascular properties relevant in heart failure.

Interventions

Synchronized Diaphragmatic Stimulation

Implantable Pulse Generator system providing cardiac-gaited stimulation of the diaphragm and thereby influence cardiovascular properties relevant in heart failure.

Intervention Type: DEVICE

Other Intervention Names

Asymptomatic Diaphragmatic Stimulation; SDS; ADS; VisONE SDS

Eligibility Criteria

Inclusion Criteria

• NYHA classes II/III on optimal Guideline Directed Medical Therapy (GDMT)
• QRS duration ≤ 130 ms
• EF≤ 40%

Exclusion Criteria

• Baseline 6 minute walk test > 500 meters or < 200 meters
• NT-proBNP< 250 if on loop diuretics, or NT-proBNP < 500 if not on loop diuretics
• Supine resting heart rate > 140 bpm
• Systolic blood pressure < 80 mmHg or > 170 mmHg
• Serum creatinine > 2.5 mg/dL
• Serum hepatic function 3x ULN
• Any of the following within the previous 3 months: unstable angina, AMI, CABG, PTCA, CVA/TIA, persistent AF (> 24 hours), symptomatic NSVT or DCCV
• Any inotropic drug treatment within the previous 3 months
• Bradycardia (heart rate < 50 beats/min), atrial arrhythmias with rates > 100 beats/min, sustained ventricular tachycardia or frequent ventricular ectopy >10% present during screening
• Significant uncontrolled symptomatic bradyarrhythmia, atrial fibrillation, unstable ventricular arrhythmias or frequent ventricular ectopy > 10% documented within the previous 3 months
• Reversible non-ischemic cardiomyopathy
• Valvular disease requiring intervention within the next 12 months or presence of significant valve disease as determined by the site cardiologist as:

1. Greater than mild mitral valve stenosis

2. Greater than moderate mitral valve regurgitation

3. Greater than mild tricuspid valve stenosis

4. Greater than moderate-severe tricuspid valve regurgitation

5. Greater than moderate aortic stenosis

6. Greater than moderate aortic regurgitation

7. Greater than mild-moderate pulmonic stenosis

8. Greater than moderate pulmonic regurgitation

• Severe primary pulmonary disease, including pulmonary arterial hypertension. PAP sys >70 mmHg at rest
• Severe COPD, other respiratory or lung diseases where FEV < 50%
• Presence of more than small pleural effusion or history of pleural drainage within the previous 6 months
• Known history of diaphragmatic paralysis or suspicion confirmed by unilateral or bilateral elevation of the diaphragm on chest x-ray
• Pericardial disease
• Diabetic neuropathy
• Existing diaphragmatic stimulation for respiration assist
• Present LVAD, Baroreflex Activation Therapy, Cardiac Contractility Modulation or interatrial shunt devices; temporary mechanical cardiac assist devices (current or within the previous 3 months); or CRT that is indicated or implanted and functional
• Contraindications to laparoscopic access to the diaphragm, as determined by the implanting physician
• Known intra-abdominal pathology which could increase the risk of laparoscopic access to the diaphragm.
• Previous open laparotomy within 1 year
• Previous thoracic or abdominal organ transplant
• Drug induced immuno-suppression
• Body mass index > 40
• Enrollment in a concurrent investigation / clinical study
• Having a life expectancy of <1 year due to any condition
• Pregnant or planning a pregnancy during the study period
• Known allergies to implantable device materials
• History of systemic infection requiring the use of intravenous antibiotics within the previous 3 months

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Clinical Accelerator

INDUSTRY

Sponsor Role: collaborator

Duke Clinical Research Institute

OTHER

Sponsor Role: collaborator

VisCardia Inc.

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Lee R Goldberg, MD

Role: PRINCIPAL_INVESTIGATOR

University of Pennsylvania

Central Contacts

Patricia Arand, Ph.D.

Role: CONTACT

arandp@viscardia.com

5034313823

Peter Bauer, Ph.D.

Role: CONTACT

bauerp@viscardia.com

5034313824

Other Identifiers

VisCardia H03_22

Identifier Type: -

Identifier Source: org_study_id