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Cardiovascular DiseasesNCT00005756

Epidemiology of Coronary Calcification in the Elderly

An observational study of Cardiovascular Diseases and Heart Diseases, run by University of Pittsburgh.

Completed

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

Official record
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Trial summary

To investigate the prevalence and prognostic value of subclinical atherosclerosis in the Pittsburgh SHEP cohort and a cohort of normal controls. Read more about this study

Who is it for?
Ages 65 to 100 years
How many people
Not given
Where
No sites listed yet
Study dates
Aug 1999to Jul 2007
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 65 to 100 years
  • All sexes
  • No healthy volunteers
  • Older adult

Study population: 614 older adults aged, on average, 80 years (range, 67 to 99 years); 367 (60%) were women, and 143 (23%) were black.

Who may be able to join

  • Age 65 or older in 1989-90 Able to give informed consent Able to travel to study site No plans to move from the area within 3 years of CHS enrollment

Who cannot join

  • Inability to give informed consent at time of EBCT scan Unable to travel to study center Lives in nursing home.

About this study

To investigate the prevalence and prognostic value of subclinical atherosclerosis in the Pittsburgh SHEP cohort and a cohort of normal controls.

Read the detailed description

BACKGROUND:

This is an ancillary study to the Systolic Hypertension in the Elderly Program (SHEP)

DESIGN NARRATIVE:

Continued annual telephone follow-up of the remaining 178 Pittsburgh SHEP participants and 168 controls will be conducted . A final clinic visit will include measures of coronary and aortic calcification using electron beam computed tomography (CT), pulse wave velocity as a measure of aortic stiffening and cognitive function testing. For the Pittsburgh SHEP cohort, the antihypertensive treatment effect has been striking with event rates for the active and placebo groups continuing to diverge beyong the end of SHEP. Successful demonstration of a treatment effect on coronary calcium scores would be the first randomized data showing an antihypertensive effect directly in the coronary arteries. Risk factors for coronary calcification will be evaluated, producing data of a type not yet available in the literature for older adults and not being collected in any other ongoing studies of the elderly. The added measures of vascular stiffness will supplement the extensive data on subclinical atherosclerosis already available for this cohort. The extent to which these measures predict cardiovascular events will be evaluated. The study has been renewed through July 2006.

Since hypertension and aging are associated with cognitive impairment and vascular dementia, SHEP participants assigned to the placebo group are expected to have lower cognitive function compared to those assigned to active treatment. Among both hypertensive and normotensive groups, lower cognitive function among those with evidence of subclinical atherosclerosis is expected.

Finally, members of the cohort who were originally normotensive at study entry are now developing systolic hypertension. These subjects will allow a prospective evaluation of risk factors for systolic hypertension. Continued study of this cohort into their 80s will provide unique data on the risks and etiology of systolic hypertension, the efficacy of its treatment and the prognostic value of a number of measures of subclinical atherosclerosis. It is predicted that the results will be directly applicable to the largest growing segment of the U.S. population.

Medical subject headings
Cardiovascular Diseases, Heart Diseases, Coronary Artery Disease, Coronary Disease, Hypertension

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 startAug 1999
  3. Primary completionJul 2007
  4. Study completionJul 2007

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
NCT00005756
Sponsor's protocol ID
5111
Other IDs
R01HL064587
Status last verified
Jan 2016
First submitted
25 May 2000
Last updated
13 Jan 2016
Results posted
No
Data monitoring committee
Yes
Individual data sharing
Yes

Publications

  • Newman AB, Naydeck BL, Sutton-Tyrrell K, Feldman A, Edmundowicz D, Kuller LH. Coronary artery calcification in older adults to age 99: prevalence and risk factors. Circulation. 2001 Nov 27;104(22):2679-84. doi: 10.1161/hc4601.099464.

    PubMed 11723018
  • Newman AB, Naydeck BL, Sutton-Tyrrell K, Edmundowicz D, O'Leary D, Kronmal R, Burke GL, Kuller LH. Relationship between coronary artery calcification and other measures of subclinical cardiovascular disease in older adults. Arterioscler Thromb Vasc Biol. 2002 Oct 1;22(10):1674-9. doi: 10.1161/01.atv.0000033540.89672.24.

    PubMed 12377748
  • Newman AB, Naydeck BL, Whittle J, Sutton-Tyrrell K, Edmundowicz D, Kuller LH. Racial differences in coronary artery calcification in older adults. Arterioscler Thromb Vasc Biol. 2002 Mar 1;22(3):424-30. doi: 10.1161/hq0302.105357.

    PubMed 11884285
  • Rosano C, Aizenstein HJ, Cochran JL, Saxton JA, De Kosky ST, Newman AB, Kuller LH, Lopez OL, Carter CS. Event-related functional magnetic resonance imaging investigation of executive control in very old individuals with mild cognitive impairment. Biol Psychiatry. 2005 Apr 1;57(7):761-7. doi: 10.1016/j.biopsych.2004.12.031.

    PubMed 15820233
  • Rosano C, Aizenstein H, Cochran J, Saxton J, De Kosky S, Newman AB, Kuller LH, Lopez OL, Carter CS. Functional neuroimaging indicators of successful executive control in the oldest old. Neuroimage. 2005 Dec;28(4):881-9. doi: 10.1016/j.neuroimage.2005.05.059. Epub 2005 Oct 12.

    PubMed 16226041

Questions about this trial

What is this clinical trial studying?

An observational study of Cardiovascular Diseases and Heart Diseases, run by University of Pittsburgh.

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

Who may be eligible to take part?

The sponsor lists 1 inclusion and 1 exclusion criteria. 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 13 Jan 2016. 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 NCT00005756, which also lists 5 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 13 Jan 2016.

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