Define in Humans With Compensated CHF and Renal Dysfunction, the Modulating Action of Chronic AT1 Receptor Blockade in Addition to ACE Inhibition on Cardiorenal and Humoral Function

  • Study type:

    Interventional What is this?

    Describes the nature of a clinical study. Types include:

    • Observational study — observes people and measures outcomes without affecting results.
    • Interventional study (clinical trial) — studies new tests, treatments, drugs, surgical procedures or devices.
    • Medical records research — uses historical information collected from medical records of large groups of people to study how diseases progress and which treatments and surgeries work best.
  • Study phase:

    I/II What is this?

    During the early phases (phases 1 and 2), researchers assess safety, side effects, optimal dosages and risks/benefits. In the later phase (phase 3), researchers study whether the treatment works better than the current standard therapy. They also compare the safety of the new treatment with that of current treatments. Phase 3 trials include large numbers of people to make sure that the result is valid. There are also less common very early (phase 0) and later (phase 4) phases. Phase 0 trials are small trials that help researchers decide if a new agent should be tested in a phase 1 trial. Phase 4 trials look at long-term safety and effectiveness, after a new treatment has been approved and is on the market.

Study IDs

  • Site IRB:

    • Rochester, Minnesota: 09-003284
  • NCT ID:

    NCT01678794
  • Sponsor Protocol Number:

    09-003284

About this study

To advance our understanding of the mechanisms of human cardiorenal syndrome with emphasis upon the interaction of diuretic therapy and the renal-angiotensin-aldosterone -system and cGMP pathway.

The belief is that the chronic AT1 receptor blockade in subjects with compensated CHF and renal dysfunction will improve renal function with increased sodium excretion, glomerular filtration rate and effective renal plasma flow and renal function reserve as compared to the response of placebo-treated subjects.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. If you need assistance understanding the eligibility criteria, please contact the study team.

See eligibility criteria

Inclusion Criteria:

  • Left ventricular ejection fraction of equal or less than 40% assessed by echocardiography, nuclear scan, MRI or left ventriculogram within the past 48 months.
  • Stable New York Heart Association (NYHA) class II and III symptoms as defined by: no change in NYHA symptoms over the past 3 months, on stable doses of ACE inhibitor, beta blocker, digoxin and furosemide over the last 4 weeks and no episode of decompensated CHF over the past 6 months.
  • Calculated creatinine clearance of equal or less than 80 ml/min and greater than 20 ml/min, using the MDRD formula assessed within the past 48 months and a confirmatory calculated creatinine clearance equal or less than 80 ml/min and greater than 20 ml/min at the time of enrollment.

Subjects who are already taking AT1 receptor blocker will be excluded. Aldosterone antagonist, antiarrhythmic medications and other vasodilators will be allowed; however, all medications must be at stable doses 4 weeks prior to enrollment. Subjects taking nonsteroidal anti-inflammatory drugs (NSAIDs) except aspirin will not be able to increase their medication dose for the duration of the study. Subjects will be excluded if they have had a prior diagnosis of intrinsic renal disease, including renal artery stenosis of > 50%, or if they meet any one of the exclusion criteria listed below.

Exclusion Criteria:

  • Prior diagnosis of intrinsic renal diseases including renal artery stenosis of > 50%
  • Peritoneal or hemodialysis within 90 days or anticipation that dialysis or ultrafiltration of any form will be required during the study period
  • Hospitalization for decompensated CHF during the past 6 months
  • Subjects that are taking AT1 receptor blockers
  • Myocardial infarction within 6 months of screening
  • Unstable angina within 6 months of screening, or any evidence of myocardial ischemia
  • Significant valvular stenosis, hypertrophic, restrictive or obstructive cardiomyopathy, constrictive pericarditis, primary pulmonary hypertension, or biopsy proven active myocarditis
  • Severe congenital heart diseases
  • Sustained ventricular tachycardia or ventricular fibrillation within 14 days of screening
  • Second or third degree heart block without a permanent cardiac pacemaker
  • Stroke within 3 months of screening, or other evidence of significantly compromised CNS perfusion
  • ALT >1.5 times the upper limit of normal
  • Serum sodium of < 125 mEq/dL or > 160 mEq/dL
  • Serum potassium of < 3.5 mEq/dL or > 5.7 mEq/dL
  • Serum digoxin level of > 2.0 ng/ml
  • Hemoglobin < 9 gm/dl
  • Other acute or chronic medical conditions or laboratory abnormality which may increase the risks associated with study participation or may interfere with interpretation of the data
  • Received an investigational drug within 1 month prior to dosing
  • Patients with an allergy to iodine.
  • Female subject who is pregnant or breastfeeding
  • In the opinion of the investigator, is unlikely to comply with the study protocol or is unsuitable for any reasons

Participating Mayo Clinic locations

Study statuses change often. Please contact us for help.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Horng Chen, M.D.

Contact us for the latest status

Sherry Benike R.N.

(507)266-3629

benike.sherry@mayo.edu