Summary

Eligibility
for people ages 18 years and up (full criteria)
Location
at La Jolla, California and other locations
Dates
study started
completion around

Description

Summary

The purpose of this study is to evaluate initial clinical safety, device functionality and effectiveness of the Edwards Transcatheter Atrial Shunt System.

Official Title

EArLy FeasibiLity Study Of the EdWards Transcatheter Atrial Shunt System (ALt FLOW US)

Details

The early feasibility study of the Edwards Transcatheter Atrial Shunt System is a multi-center, prospective, early feasibility study to evaluate initial clinical safety, device functionality, and effectiveness of the Edwards Transcatheter Atrial Shunt System.

Keywords

Heart Failure, Transcatheter Atrial Shunt System, Edwards Transcatheter Atrial Shunt System

Eligibility

You can join if…

Open to people ages 18 years and up

  1. Signed and dated IRB approved study consent form prior to study related procedures
  2. ≥ 18 years old
  3. Chronic symptomatic Heart Failure (HF) documented by the following:
    1. NYHA class II with a history of NYHA class > II; NYHA class III; or ambulatory NYHA class IV AND
    2. ≥ 1 HF hospital admission (with HF as the primary, or secondary diagnosis); or treatment with intravenous (IV) or intensification of oral diuresis for HF in a healthcare facility (emergency department/acute care facility) within the 12 months prior to study entry; OR an NT-pro BNP value > 150 pg./ml in normal sinus rhythm, > 450 pg./ml in atrial fibrillation, or a BNP value > 50 pg./ml in normal sinus rhythm, > 150 pg./ml in atrial fibrillation within the past 6 months prior to study entry.
  4. In the judgment of the investigator, subject is on stable Guideline Directed Medical Therapy (GDMT) for heart failure and management of potential comorbidities according to current ACCF/AHA Guidelines and that is expected to be maintained without change for 3 months
  5. At rest: elevated LAP or PCWP pressure of > 15 mmHg and LAP (or PCWP) exceeds right atrial pressure (RAP) by > 5 mmHg AND/OR during supine ergometer exercise stress test, as measured at end-expiration, elevated LA (or PCWP) pressure of > 25 mmHg and LA (or PCWP) exceeds right atrial pressure (RAP) by > 10 mmHg
  6. Willing to attend study follow-up assessments for up to 5 years

    Inclusion Criteria for Cohort B, Heart Failure with Pulmonary Vascular Disease only:

  7. Pulmonary Vascular Resistance (PVR) > 3.0 and ≤ 8.0 Wood Units at rest
  8. Mean Pulmonary Artery Pressure (mPAP) ≥ 25 mmHg at rest AND
  9. If baseline PVR is > 4.0, must show successful reversibility of PH under a resting Sodium Nitroprusside* challenge where success is defined as a lowering of the PVR to a level ≤ 4.0 Wood Units while maintaining a Systolic Blood Pressure ≥ 90 mmHg.
    • Equivalent vasodilator agent (e.g., nitric oxide) may be used as deemed appropriate per hospital practice

You CAN'T join if...

  1. Severe heart failure defined as one or more of the below:
    1. ACC/AHA/ESC Stage D heart failure, non-ambulatory NYHA Class IV HF
    2. If BMI < 30, Cardiac index < 2.0 L/min/m2
    3. If BMI ≥ 30, cardiac index < 1.8 L/min/m2
    4. Inotropic infusion (continuous or intermittent) within the past 6 months
    5. Patient is on the cardiac transplant waiting list
    6. LVEF < 20%
  2. Presence of significant valve disease defined by the site cardiologist as:
    1. Mitral valve regurgitation defined as grade > 3+ MR or > moderate MS
    2. Tricuspid valve regurgitation defined as grade > 2+ TR
    3. Aortic valve disease defined as > 2+ AR or > moderate AS
  3. MI and/or any therapeutic invasive, non-valvular cardiac procedure within past 3 months or current indication for coronary revascularization
  4. Surgical valve repair or replacement within the past 12 months; Transcatheter valve repair or replacement within the past 6 months.
  5. Cardiac Resynchronization Therapy initiated, stroke or transient ischemic attack (TIA) within the past 6 months
  6. Hemodynamic instability within 30 days of scheduled implant procedure
  7. Patient requiring surgery under general anesthesia for any reason within 30 days of scheduled implant procedure
  8. Clinically diagnosed hypertrophic obstructive cardiomyopathy, constrictive pericarditis or other infiltrative cardiomyopathy (eg, hemochromatosis, sarcoidosis)
  9. Has renal insufficiency as determined by creatinine (S-Cr) level > 2.5 mg/dL or estimated-GFR < 25ml/min/1.73 m2 by CKD-Epi equation; or currently requiring dialysis

    10. Significant hepatic impairment defined as 3× upper limit of normal of transaminases,

    total bilirubin, or alkaline phosphatase

    11. Performance of the 6 minute walk test with a distance <50m OR >600m 12. Subject is contraindicated to receive either dual antiplatelet therapy or warfarin

    (analogue); or has a documented coagulopathy

    13. Known hypersensitivity to anticoagulation therapy or contrast agent, which cannot be

    adequately medicated

    14. Known hypersensitivity to Nickel and/or Tantalum 15. In the judgment of the investigator, life expectancy <12 months for noncardiovascular

    reasons

    16. In the opinion of the investigator, the subject is not an appropriate candidate for

    the study

    17. Anatomy (including implantable devices) that is not compatible with the Edwards

    Transcatheter Atrial Shunt System

    18. Active endocarditis or infection within 3 months of scheduled implant procedure 19. Currently participating (e.g., undergoing trial specific exams/treatment/procedures)

    in an investigational drug or device study. Note: trials requiring extended follow-up for products that were investigational but have since become commercially available are not considered investigational trials.

    20. Patient is a current intravenous recreational drug user 21. Positive serum pregnancy test in female subjects of child-bearing potential or nursing

    mothers or planning on becoming pregnant during the duration of the trial

    22. Patient is under guardianship 23. Known pre-existing shunting, determined to be clinically significant by the

    investigator

    24. (Not applicable to Cohort B) Right ventricular dysfunction, defined by the site

    cardiologist as:

    1. More than mild RV dysfunction as estimated by TTE; OR
    2. TAPSE <1.4 cm; OR
    3. RV size ≥ LV size as estimated by TTE; OR
    4. Echocardiographic or clinical evidence of congestive hepatopathy
      1. Evidence of pulmonary vascular disease with PVR >3.0 Wood units

      Exclusion Criteria for Cohort B, Heart Failure with Pulmonary Vascular Disease only:

      1. Propensity for increased Right ventricular dysfunction, defined by the site cardiologist as:
  10. More than moderate RV dysfunction as estimated by TTE; OR
  11. TAPSE <1.2 cm; OR
  12. RV size ≥ LV size as estimated by TTE; OR
  13. Mean Right Atrial Pressure (RAP) > 18 mm Hg; OR
  14. Echocardiographic or clinical evidence of congestive hepatopathy

Locations

  • UC San Diego Health in progress, not accepting new patients
    La Jolla California 92037 United States
  • University California San Francisco accepting new patients
    San Francisco California 94143 United States
  • Swedish Medical Center accepting new patients
    Seattle Washington 98122 United States

Details

Status
accepting new patients at some sites,
but this study is not currently recruiting here
Start Date
Completion Date
(estimated)
Sponsor
Edwards Lifesciences
ID
NCT03523416
Study Type
Interventional
Participants
Expecting 75 study participants
Last Updated