Novel Hemostatic Cardiac Risk Factors in Framingham

This study has been completed.
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI) Identifier:
First received: May 25, 2000
Last updated: June 23, 2005
Last verified: March 2005

To investigate hemostatic variables in relation to cardiovascular risk in the Framingham Offspring Study cohort.

Cardiovascular Diseases
Heart Diseases
Death, Sudden, Cardiac
Myocardial Infarction
Carotid Artery Diseases

Study Type: Observational

Resource links provided by NLM:

Further study details as provided by National Heart, Lung, and Blood Institute (NHLBI):

Study Start Date: July 1994
Estimated Study Completion Date: May 1998
Detailed Description:


Elevation of platelet reactivity plasminogen activator inhibitor, fibrinogen, von Willebrand's factor, and factor VII have been reported to increase myocardial infarction risk. Myocardial infarction and sudden cardiac death are more frequent in the morning when platelet activity is increased and fibrinolysis is decreased. Reduction of recurrent myocardial infarction by aspirin and coumadin suggests causal roles for platelet activity and coagulation. Increases in viscosity and decreases in anti-thrombin III and Protein C have been linked with increased thrombosis. Despite these findings, a coherent picture of these disparate hemostatic indices as cardiac risk factors has yet to emerge.


Platelet reactivty, plasminogen activatator inhibitor, fibrinogen, von Willebrand's factor, factor VII, and other hemostatic risk factors were measured in all 4,000 subjects of the Framingham Offspring Study. The data were combined with the regularly collected Framingham data to: determine the relationships between hemostatic factors and carotid atherosclerosis as assessed by ultrasound; determine the relationship between hemostatic factors and the traditional cardiac risk factors; and determine if hemostatic risk factors independently predict myocardial infarction and cardiac death.


Genders Eligible for Study:   Male
Accepts Healthy Volunteers:   No

No eligibility criteria

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Please refer to this study by its identifier: NCT00005356

Sponsors and Collaborators
Investigator: Geoffrey Tofler Beth Israel Deaconess Medical Center
  More Information

Publications: Identifier: NCT00005356     History of Changes
Other Study ID Numbers: 4242
Study First Received: May 25, 2000
Last Updated: June 23, 2005
Health Authority: United States: Federal Government

Additional relevant MeSH terms:
Carotid Artery Diseases
Death, Sudden, Cardiac
Brain Diseases
Cardiovascular Diseases
Central Nervous System Diseases
Cerebrovascular Disorders
Death, Sudden
Heart Arrest
Heart Diseases
Nervous System Diseases
Pathologic Processes
Vascular Diseases processed this record on March 26, 2015