AzTrials
AzTrials

Cardiovascular DiseasesNCT00005534

Prevalence of Asymptomatic Ventricular Dysfunction

An observational study of Cardiovascular Diseases and Heart Diseases, run by Mayo Clinic.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

To conduct a population-based study of the prevalence of asymptomatic ventricular dysfunction. Read more about this study

Who is it for?
Ages 45 years and older
How many people
Not given
Where
No sites listed yet
Study dates
Jan 1997to Mar 2006
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 45 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

No eligibility criteria

About this study

To conduct a population-based study of the prevalence of asymptomatic ventricular dysfunction.

Read the detailed description

BACKGROUND:

Chronic congestive heart failure (CHF), caused by left ventricular dysfunction (LVD), is a major cause of morbidity and mortality. CHF is the major form of cardiovascular disease that is increasing in prevalence, LVD progresses from an asymptomatic phase to a severe symptomatic phase. Recent clinical trials have proven that angiotensin converting enzyme inhibitor reduced mortality, morbidity, and disease progression in asymptomatic patients with objectively measured LVD. However, available estimates of LVD prevalence are based on symptomatic patients, not on objectively measured ventricular function parameters. The distributions of ventricular function parameters in the United States population are unknown. Since the prevalence of objectively measured asymptomatic LVD is unknown, the total number of patients with LVD who could benefit from medical therapy is also not known. Furthermore, screening techniques to identify persons with treatable asymptomatic LVD have not been evaluated in a population-based setting. The plasma concentration of n-atrial natriuretic peptide (n-ANP) is a marker for the presence of asymptomatic LVD that may be a valuable screening tool for asymptomatic LVD.

DESIGN NARRATIVE:

This is a population-based study of the distribution of ventricular function parameters in 2,050 adult residents of Olmsted County, MN and, in collaboration with the Strong Heart study, in 1,522 adult Northern Plains American Indians. This group of Northern Plains Indians is at increased risk for LVD, having a higher prevalence of cardiovascular disease than the general United States population. Subjects undergo echocardiography to measure ventricular function parameters, as well as a clinical assessment of symptoms, signs and risk factors for LVD. Plasma concentration of n-ANP are measured in these populations to determine the accuracy of n-ANP as a noninvasive marker for asymptomatic LVD. These studies provide: comparative population-based estimates of ventricular function parameters and LVD in Olmsted County and Northern Plains Indians; estimates of the magnitude of the population of patients that could benefit from current therapy; current data on risk factors for prevalent CAD in these populations; a foundation upon which future studies of incidence and clinical course of asymptomatic LVD could be based. They also assess the accuracy of plasma n-ANP in identification of asymptomatic LVD.

The study was renewed in May 2001 and will end in March 2005. Studies continue on testing the hypotheses: that abnormalities of left ventricular systolic/diastolic function and left ventricular structure worsen over time; that increasing plasma brain natriuretic peptide is associated with progressive change of left ventricular structure and function; and that abnormal left ventricular structure/function and brain natriuretic peptide are associated with incident clinical events.

Medical subject headings
Cardiovascular Diseases, Heart Diseases, Heart Failure

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted26 May 2000 (estimated)
  2. Study startJan 1997
  3. Primary completionMar 2006
  4. Study completionMar 2006

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
IDs, dates and publications
ClinicalTrials.gov ID
NCT00005534
Sponsor's protocol ID
1577-00
Other IDs
R01HL055502
Status last verified
Mar 2014
First submitted
25 May 2000
Last updated
7 Mar 2014
Results posted
No

Publications

  • Senni M, Rodeheffer RJ, Tribouilloy CM, Evans JM, Jacobsen SJ, Bailey KR, Redfield MM. Use of echocardiography in the management of congestive heart failure in the community. J Am Coll Cardiol. 1999 Jan;33(1):164-70. doi: 10.1016/s0735-1097(98)00523-3.

    PubMed 9935024

  • Senni M, Tribouilloy CM, Rodeheffer RJ, Jacobsen SJ, Evans JM, Bailey KR, Redfield MM. Congestive heart failure in the community: trends in incidence and survival in a 10-year period. Arch Intern Med. 1999 Jan 11;159(1):29-34. doi: 10.1001/archinte.159.1.29.

    PubMed 9892327

  • Senni M, Tribouilloy CM, Rodeheffer RJ, Jacobsen SJ, Evans JM, Bailey KR, Redfield MM. Congestive heart failure in the community: a study of all incident cases in Olmsted County, Minnesota, in 1991. Circulation. 1998 Nov 24;98(21):2282-9. doi: 10.1161/01.cir.98.21.2282.

    PubMed 9826315

  • Devereux RB, Roman MJ, Paranicas M, Lee ET, Welty TK, Fabsitz RR, Robbins D, Rhoades ER, Rodeheffer RJ, Cowan LD, Howard BV. A population-based assessment of left ventricular systolic dysfunction in middle-aged and older adults: the Strong Heart Study. Am Heart J. 2001 Mar;141(3):439-46. doi: 10.1067/mhj.2001.113223.

    PubMed 11231443

  • Redfield MM, Rodeheffer RJ, Jacobsen SJ, Mahoney DW, Bailey KR, Burnett JC Jr. Plasma brain natriuretic peptide concentration: impact of age and gender. J Am Coll Cardiol. 2002 Sep 4;40(5):976-82. doi: 10.1016/s0735-1097(02)02059-4.

    PubMed 12225726

  • Redfield MM, Jacobsen SJ, Burnett JC Jr, Mahoney DW, Bailey KR, Rodeheffer RJ. Burden of systolic and diastolic ventricular dysfunction in the community: appreciating the scope of the heart failure epidemic. JAMA. 2003 Jan 8;289(2):194-202. doi: 10.1001/jama.289.2.194.

    PubMed 12517230

  • Munagala VK, Jacobsen SJ, Mahoney DW, Rodeheffer RJ, Bailey KR, Redfield MM. Association of newer diastolic function parameters with age in healthy subjects: a population-based study. J Am Soc Echocardiogr. 2003 Oct;16(10):1049-56. doi: 10.1016/S0894-7317(03)00516-9.

    PubMed 14566298

  • Pritchett AM, Jacobsen SJ, Mahoney DW, Rodeheffer RJ, Bailey KR, Redfield MM. Left atrial volume as an index of left atrial size: a population-based study. J Am Coll Cardiol. 2003 Mar 19;41(6):1036-43. doi: 10.1016/s0735-1097(02)02981-9.

    PubMed 12651054

  • Dyrbye LN, Redfield MM. The role of brain natriuretic peptide in population screening. Heart Fail Rev. 2003 Oct;8(4):349-54. doi: 10.1023/a:1026143231117.

    PubMed 14574056

  • Redfield MM, Rodeheffer RJ, Jacobsen SJ, Mahoney DW, Bailey KR, Burnett JC Jr. Plasma brain natriuretic peptide to detect preclinical ventricular systolic or diastolic dysfunction: a community-based study. Circulation. 2004 Jun 29;109(25):3176-81. doi: 10.1161/01.CIR.0000130845.38133.8F. Epub 2004 Jun 7.

    PubMed 15184280

  • Pritchett AM, Mahoney DW, Jacobsen SJ, Rodeheffer RJ, Karon BL, Redfield MM. Diastolic dysfunction and left atrial volume: a population-based study. J Am Coll Cardiol. 2005 Jan 4;45(1):87-92. doi: 10.1016/j.jacc.2004.09.054.

    PubMed 15629380

  • Okura Y, Urban LH, Mahoney DW, Jacobsen SJ, Rodeheffer RJ. Agreement between self-report questionnaires and medical record data was substantial for diabetes, hypertension, myocardial infarction and stroke but not for heart failure. J Clin Epidemiol. 2004 Oct;57(10):1096-103. doi: 10.1016/j.jclinepi.2004.04.005.

    PubMed 15528061

  • Jacobsen SJ, Mahoney DW, Redfield MM, Bailey KR, Burnett JC Jr, Rodeheffer RJ. Participation bias in a population-based echocardiography study. Ann Epidemiol. 2004 Sep;14(8):579-84. doi: 10.1016/j.annepidem.2003.11.001.

    PubMed 15350958

  • Rodeheffer RJ. Measuring plasma B-type natriuretic peptide in heart failure: good to go in 2004? J Am Coll Cardiol. 2004 Aug 18;44(4):740-9. doi: 10.1016/j.jacc.2004.03.082.

    PubMed 15312852

  • Redfield MM, Jacobsen SJ, Borlaug BA, Rodeheffer RJ, Kass DA. Age- and gender-related ventricular-vascular stiffening: a community-based study. Circulation. 2005 Oct 11;112(15):2254-62. doi: 10.1161/CIRCULATIONAHA.105.541078. Epub 2005 Oct 3.

    PubMed 16203909

Questions about this trial

What is this clinical trial studying?

An observational study of Cardiovascular Diseases and Heart Diseases, run by Mayo Clinic.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 7 Mar 2014. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00005534, which also lists 15 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 7 Mar 2014.

AzTrials uses cookies for analytics and advertising. You can accept or reject them; the site works either way. Privacy Policy.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in