Significance of Regional Ventriculo-arterial Coupling in Patients With Chronic Heart Failure

The recruitment status of this study is unknown because the information has not been verified recently.
Verified July 2010 by Taipei Veterans General Hospital, Taiwan.
Recruitment status was  Recruiting
Sponsor:
Collaborator:
National Taiwan University Hospital
Information provided by:
Taipei Veterans General Hospital, Taiwan
ClinicalTrials.gov Identifier:
NCT01298258
First received: February 15, 2011
Last updated: February 16, 2011
Last verified: July 2010
  Purpose

The investigators hypothesize that the different components of arterial load are coupled with different components of LV function. The regional ventriculo-arterial couplings may be important in the pathogenesis of heart failure and ventricular remodeling, and in the prediction of future cardiovascular events.


Condition Intervention
Heart Failure
Drug: Aliskiren

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
Official Title: Significance of Regional Ventriculo-arterial Coupling in Patients With Chronic Heart Failure: Effects of Endothelial Progenitor Cells and a Direct Renin Inhibitor

Resource links provided by NLM:


Further study details as provided by Taipei Veterans General Hospital, Taiwan:

Primary Outcome Measures:
  • CV mortality and HF re-admission [ Time Frame: 1 year after enrollment ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Ventricular function [ Time Frame: 1 year after enrollment ] [ Designated as safety issue: No ]

Estimated Enrollment: 120
Study Start Date: July 2010
Estimated Study Completion Date: July 2013
Estimated Primary Completion Date: July 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Placebo Comparator: placebo
control group
Drug: Aliskiren
Aliskiren 150mg
Experimental: Aliskiren
Aliskiren 150 mh
Drug: Aliskiren
Aliskiren 150mg

Detailed Description:

Heart failure is a major health problem worldwide. Optimal treatment of this disabling and fatal condition may require functional characterization of the failed left ventricle (LV) and its interaction with the arterial system. Part of the physiological significance of the ventriculo-arterial coupling has been studied experimentally and clinically using the framework of the ratio of effective arterial elastance (Ea) to end-systolic elastance (Ees), with limited clinical applications.

From central ascending aorta to terminal arterioles, every segment of the arterial tree contributes to the arterial loads that interact and impact LV performance in both systole and diastole, leads to atrial and ventricular remodeling and hypertrophy, and results in the development of heart failure. On the other hand, the ventricular systole is a complex coordination of multi-directional myocardial fibers involving longitudinal contraction, circumferential shortening, radial thickening, twist, and torsion, the so-called LV deformations.

In the proposed 3-year project, the investigators hypothesize that the different components of arterial load are coupled with different components of LV function. The regional ventriculo-arterial couplings may be important in the pathogenesis of heart failure and ventricular remodeling, and in the prediction of future cardiovascular events. Therapies targeting these may play a role in the prevention and treatment of heart failure. Therefore, the investigators will study at least 60 patients with chronic heart failure (NYHA Class II-IV) who will randomly receive a direct renin inhibitor, aliskiren, or a placebo for 6 months on top of standard therapy. The purposes of the present study are to investigate the relationship between different components of hemodynamic load or arterial abnormalities and different components of LV myocardial deformations or regional LV function, the modulating effects of endothelial progenitor cells (EPCs) on the ventriculo-arterial coupling, and the therapeutic effects of aliskiren on the components of hemodynamic load and LV myocardial deformations and their couplings. The investigators will also investigate whether the ventriculo-arterial coupling, EPCs, and add-on therapy of aliskiren predict cardiovascular outcomes.

  Eligibility

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  1. Outpatients ≥ 18 years of age, male or female. Female patients must be either post-menopausal for one year, surgically sterile, or using effective contraceptive methods such as oral contraceptives, barrier method with spermicide or an intrauterine device.
  2. Patients with a diagnosis of chronic heart failure (NYHA Class II-IV) and reduced systolic function: LVEF ≤ 45% at Visit 1 (local measurement, measured within the past 6 months assessed by echocardiogram, MUGA, CT scan, MRI or ventricular angiography).
  3. NT-pro BNP ≥ 600pg/ml (BNP ≥ 150 pg/ml) at Visit 1 or NT-pro BNP ≥ 450 pg/mL (BNP (≥ 100 pg/ml) and a hospitalization for HF within last 12 months
  4. Patients must be on a stable dose of either an ACE inhibitor or an ARB for at least 4 weeks prior to Visit 1.
  5. Patients must be treated with a beta blocker, unless contraindicated or not tolerated, at a stable dose for at least 4 weeks prior to Visit 1.
  6. Patients with documented sinus rhythm at Visit 1.

Exclusion Criteria:

  1. History of hypersensitivity to any of the study drugs.
  2. Patients who require treatment with both ACEI and ARB.
  3. Current acute decompensated HF (exacerbation of chronic HF manifested by signs & symptoms that may require IV therapy).
  4. Symptomatic hypotension and/or less than 100 mmHg at the time of screening or less than 90 mmHg at the time of randomization.
  5. eGFR < 30 ml/min/1.73m2 as measured by the MDRD formula at Visit 1 (screening) , or a > 25% decrease after 14 days of active run-in period.
  6. Serum potassium > 5.0 mmol/L at screening (Visit 1).
  7. Acute coronary syndrome, stroke, transient ischemic attack, cardiac, carotid or major vascular surgery, percutaneous coronary intervention (PCI) or carotid angioplasty, within the past 3 months prior to visit 1.
  8. Coronary or carotid artery disease likely to require surgical or percutaneous intervention within the 6 months after Visit 1.
  9. Patients with active or unstable bronchospasm or asthma (patients must be on stable regimen of respiratory medications for 1 month prior to Visit 1).
  10. Right heart failure due to severe pulmonary disease.
  11. Diagnosis of peripartum or chemotherapy induced cardiomyopathy within the 12 months prior to visit 1.
  12. Patients with a history of heart transplant or who are on a transplant list or with left ventricular assistance device (LVAD device).
  13. Documented ventricular arrhythmia with syncopal episodes within past 3 months, prior to visit 1, that is untreated.
  14. Symptomatic bradycardia or second or third degree heart block without a pacemaker.
  15. Implantation of a CRT (cardiac resynchronization therapy) device within the prior 3 months from visit 1 or intent to implant a CRT device.
  16. Presence of hemodynamically significant mitral and/or aortic valve disease, except mitral regurgitation secondary to left ventricular dilatation.
  17. Presence of other hemodynamically significant obstructive lesions of left ventricular outflow tract, including aortic and sub-aortic stenosis.
  18. Severe primary pulmonary, renal or hepatic disease.
  19. Presence of any other disease with a life expectancy of < 1 year.
  20. Chronic long-term requirement for NSAIDs (high dose) or COX2 inhibitors, with the exception of aspirin at doses used for CV prophylaxis (≤325 mg o.d.).
  21. Any surgical or medical condition which might significantly alter the absorption, distribution, metabolism, or excretion of study drugs
  22. Subjects get pregnant or will be pregnant within 6 months.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01298258

Contacts
Contact: Chen-Huan Chen, M.D. 886228752973

Locations
Taiwan
Taipei Veterans General Hospital Recruiting
Taipei, Taiwan
Contact: Chen-Huan Chen, M.D.    886228752073      
Sponsors and Collaborators
Taipei Veterans General Hospital, Taiwan
National Taiwan University Hospital
Investigators
Principal Investigator: Chen-Huan chen, M.D. Taipei Veterans General Hospital, Taiwan
  More Information

No publications provided

Responsible Party: Chen-Huan Chen, National YangMing University
ClinicalTrials.gov Identifier: NCT01298258     History of Changes
Other Study ID Numbers: 99NSC-REVAC
Study First Received: February 15, 2011
Last Updated: February 16, 2011
Health Authority: Taiwan: Institutional Review Board

Additional relevant MeSH terms:
Heart Failure
Heart Diseases
Cardiovascular Diseases

ClinicalTrials.gov processed this record on July 26, 2014