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Platelet Drug Trial in Coronary Disease Progression

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: October 28, 1999
Last Update Posted: November 26, 2013
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI)
To determine the effectiveness of the platelet inhibitor drugs dipyridamole and aspirin in reducing the angiographic progression of coronary artery disease over a five-year period and to test the predictive value of the platelet survival half-life in identifying patients with more rapid progression of coronary disease and development of its complications.

Condition Intervention Phase
Cardiovascular Diseases Coronary Disease Heart Diseases Myocardial Ischemia Drug: aspirin Drug: dipyridamole Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Masking: Double
Primary Purpose: Prevention

Resource links provided by NLM:

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

Study Start Date: December 1979
Study Completion Date: December 1982
Detailed Description:


Coronary atherosclerosis is the leading cause of death in this country and the developed countries of the world. Although modern coronary care units have resulted in a markedly decreased hospital mortality from acute myocardial infarction, especially in those patients who enter the hospital early, its overall impact is limited since two-thirds of patients who die from coronary disease do not reach the hospital. When the trial was initiated in 1979, new approaches to the medical treatment of coronary disease and its complications were needed with an effort directed towards prevention of its progression and prevention of its complications through medical therapy. This prevention could save significant health care dollars over the long-term especially if the need for aortocoronary bypass graft surgery and the incidence of myocardial infarction could be reduced. Early identification of the patient at risk of developing coronary disease or of those with early coronary artery lesions would allow a greater impact of any successful intervention therapy.


Randomized, double-blind. The patients in the experimental group were treated with dipyridamole and aspirin for five years. Patients in the control group received a lactose placebo. The primary endpoint was angiographic evidence of progression of coronary artery disease and development of new coronary disease. Secondary endpoints included total mortality, cardiac mortality, mortality due to myocardial infarction, and incidence of new myocardial infarction. Recruitment ended in December 1982.

The study completion date listed in this record was obtained from the statement immediately above ("Recruitment ended in December 1982") and was confirmed from the Query/View/Report (QVR) System.


Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Patients aged 65 or less. Angiographically identified coronary heart disease
  Contacts and Locations
No Contacts or Locations Provided
  More Information

ClinicalTrials.gov Identifier: NCT00000496     History of Changes
Other Study ID Numbers: 15
First Submitted: October 27, 1999
First Posted: October 28, 1999
Last Update Posted: November 26, 2013
Last Verified: April 2012

Additional relevant MeSH terms:
Cardiovascular Diseases
Heart Diseases
Coronary Disease
Coronary Artery Disease
Myocardial Ischemia
Pathologic Processes
Vascular Diseases
Arterial Occlusive Diseases
Phosphodiesterase Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Platelet Aggregation Inhibitors
Vasodilator Agents