Completed

Recurrent Carotid Stenosis

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What is being tested

aspirin

+ dipyridamole
Drug
Who is being recruted

Cardiovascular Diseases
+2

+ Carotid Stenosis
+ Cerebrovascular Disorders
From 18 to 75 Years

See all eligibility criteria

How is the trial designed

Prevention Study

Phase 2
Interventional
Study Start: August 1986

See protocol details

Summary

Principal SponsorEmory University
Last updated: December 11, 2013
Sourced from a government-validated database.Claim as a partner
Study start date: August 1, 1986Actual date on which the first participant was enrolled.

To determine whether recurrent stenosis following carotid endarterectomy could be reduced by pre- and post-operative oral administration of platelet-inhibiting drugs. BACKGROUND: Following endarterectomy, platelets adhere and aggregate on the endarterectomized surface and release platelet-derived growth factor which induces smooth muscle cell migration and proliferation which may result in restenosis. Many patients had been treated with aspirin and dipyridamole, but not in a controlled trial. The Recurrent Carotid Stenosis Study established whether antiplatelet therapy was beneficial in the prevention of recurrent carotid artery stenosis. DESIGN NARRATIVE: Randomized, double-blind. Eighty-three patients (90 endarterectomies) were randomly assigned to receive 325 mg of oral aspirin plus 75 mg of dipyridamole, beginning 12 hours pre-operatively, followed by a second dose administered within eight hours after the operation, and given three times daily thereafter for one year. Eighty patients (85 endarterectomies) received placebo. After the adequacy of the surgical procedure was confirmed by intraoperative angiography, restenosis at the endarterectomy sites was evaluated using serial duplex ultrasound before hospital discharge and at three-month intervals postoperatively for one year.

Official TitleRecurrent Carotid Stenosis 
Principal SponsorEmory University
Last updated: December 11, 2013
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details
Prevention Study
Prevention studies aim to stop a disease from developing. They often involve people at risk and test things like vaccines, lifestyle changes, or preventive medications.

How participants are assigned to different groups/arms
In this clinical study, participants are placed into groups randomly, like flipping a coin. This ensures that the study is fair and unbiased, making the results more reliable. By assigning participants by chance, researchers can better compare treatments without external influences.

Other Ways to Assign Participants
Non-randomized allocation: Participants are assigned based on specific factors, such as their medical condition or a doctor's decision.
None (Single-arm trial): If the study has only one group, all participants receive the same treatment, and no allocation is needed.

How the interventions assigned to participants is kept confidential
Neither participants nor researchers know who is receiving which treatment. This is the most rigorous way to reduce bias, ensuring that expectations do not influence the results.

Other Ways to Mask Information
Open-label: Everyone knows which treatment is being given.
Single-blind: Participants do not know which treatment they are receiving, but researchers do.
Triple-blind: Participants, researchers, and outcome assessors do not know which treatment is given.
Quadruple-blind: Participants, researchers, outcome assessors, and care providers all do not know which treatment is given.

Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria
Any sexBiological sex of participants that are eligible to enroll.
From 18 to 75 YearsRange of ages for which participants are eligible to join.
Healthy volunteers not allowedIf individuals who are healthy and do not have the condition being studied can participate.
Conditions
Pathology
Cardiovascular Diseases
Carotid Stenosis
Cerebrovascular Disorders
Heart Diseases
Vascular Diseases
Criteria

Men and women who had recently undergone carotid endarterectomy.

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.
This study has no location dataSave this study to your profile to know when the location data is available. 
CompletedNo study centers