Angina, UnstablePhase 3NCT00000486
Unstable Angina Pectoris Trial
A Phase 3 study testing coronary artery bypass in people with Angina, Unstable and Cardiovascular Diseases, run by National Heart, Lung, and Blood Institute (NHLBI).
Trial summary
To compare the efficacy of medical or surgical (coronary artery bypass graft) therapy with regard to survival and quality of life in patients with unstable angina and requisite coronary anatomy as defined by angiography. Read more about this study
- Who is it for?
- Ages 21 to 65 years
- Conditions the study is for
- Angina, Unstable, Cardiovascular Diseases, Coronary Disease
- What is being tested?
- coronary artery bypass
- Type of treatment
- Surgery or procedure
- How many people
- Not given
- Where
- No sites listed yet
- Study dates
- Jan 1972to Jan 1980
- Phase
- Phase 3
- 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 21 to 65 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Men and women, ages 21 to 65. Angina pectoris (class III or class IV) at rest or with minimal exercise.
About this study
To compare the efficacy of medical or surgical (coronary artery bypass graft) therapy with regard to survival and quality of life in patients with unstable angina and requisite coronary anatomy as defined by angiography.
Read the detailed description
BACKGROUND:
Angina pectoris is a symptomatic condition of attacks of chest pain, often debilitating. It is caused by a decreased supply of blood to the heart, such as that which might occur in coronary artery disease. The usual treatment of angina pectoris is designed to relieve the symptoms. It includes avoidance of activities that produce the discomfort and the use of nitroglycerin and beta blocking drugs. Soon after the introduction of coronary bypass surgery, many doctors enthusiastically adopted this approach in treating patients with unstable angina.
In 1972, emphasizing that there was no definitive evidence showing the superiority of intensive medical management or coronary bypass surgery in determining mortality and morbidity in patients hospitalized with unstable angina, some of the participating groups in the NHLBI Myocardial Infarction Research Units developed a cooperative clinical trial to compare these medical and surgical approaches to therapy.
From 1972 through 1976, 288 patients were entered into this randomized clinical trial. One hundred forty-seven patients received intensive pharmacological medical therapy, and 141 comparable patients underwent coronary artery bypass surgery. Careful follow-up studies were performed on patients in both groups, in-hospital and during the post-hospital phase. These studies included, apart from routine physical examinations, resting electrocardiograms, chest x-ray films, and grade exercise tolerance tests at six months and twelve months.
DESIGN NARRATIVE:
Randomized, non-blind, sequential design with a control group and an experimental group. The patients in the experimental group were treated with coronary bypass surgery. Patients in the control group received intensive medical management. Endpoints were mortality and morbidity measures, such as incidence of myocardial infarction and persistence of angina.
- Conditions
- Angina, Unstable, Cardiovascular Diseases, Coronary Disease, Heart Diseases, Myocardial Ischemia
- Being tested
- coronary artery bypass
- Medical subject headings
- Angina, Unstable, Cardiovascular Diseases, Coronary Disease, Heart Diseases, Myocardial Ischemia
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
coronary artery bypassProcedure or surgery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted28 Oct 1999 (estimated)
- Study startJan 1972
- Study completionJan 1980
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for Angina, UnstableStudies of the same condition, open and under way.
- More trials run by National Heart, Lung, and Blood Institute (NHLBI)The sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Treatment
- Allocation
- Randomised
Sponsor and investigators
- Sponsor type
- US National Institutes of Health
- Investigators
- Lewis Becker, Johns Hopkins UniversityAdolph Hutter, Massachusetts General HospitalLeon Resnekov, University of ChicagoRichard Russell, University of Alabama at BirminghamJohn Schroeder, Stanford UniversityAndrew Wallace, Duke University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00000486
- Sponsor's protocol ID
- 5
- Status last verified
- Jan 2000
- First submitted
- 27 Oct 1999
- Last updated
- 26 Nov 2013
- Results posted
- No
Publications
Unstable angina pectoris: national cooperative study group to compare medical and surgical therapy. I. Report of protocol and patient population. Am J Cardiol. 1976 May;37(6):896-902. doi: 10.1016/0002-9149(76)90116-8.
PubMed 1266755Unstable angina pectoris: national cooperative study group to compare surgical and medical therapy. III. Results in patients with S-T segment elevation during pain. Am J Cardiol. 1980 Apr;45(4):819-24. doi: 10.1016/0002-9149(80)90127-7. No abstract available.
PubMed 6965816Russell RO Jr, Wayne JB, Kronefeld J, Charles ED, Oberman A, Kouchoukos NT, White C, Rogers W, Mantle JA, Rackley CE. Surgical versus medical therapy for treatment of unstable angina: changes in work status and family income. Am J Cardiol. 1980 Jan;45(1):134-40. doi: 10.1016/0002-9149(80)90231-3. No abstract available.
PubMed 6965333
Study at a glance
From the registry record, last updated by the sponsor on 26 Nov 2013. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Unstable Angina Pectoris Trial
- ClinicalTrials.gov ID
- NCT00000486
- Acronym / sponsor ID
- 5
- Conditions
- Angina, Unstable, Cardiovascular Diseases, Coronary Disease, Heart Diseases, Myocardial Ischemia
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Lead sponsor
- National Heart, Lung, and Blood Institute (NHLBI)US National Institutes of Health
- Study start
- Jan 1972
- Study completion
- Jan 1980 (actual)
- First posted
- 28 Oct 1999 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
To compare the efficacy of medical or surgical (coronary artery bypass graft) therapy with regard to survival and quality of life in patients with unstable angina and requisite coronary anatomy as defined by angiography.
Detailed description
BACKGROUND:
Angina pectoris is a symptomatic condition of attacks of chest pain, often debilitating. It is caused by a decreased supply of blood to the heart, such as that which might occur in coronary artery disease. The usual treatment of angina pectoris is designed to relieve the symptoms. It includes avoidance of activities that produce the discomfort and the use of nitroglycerin and beta blocking drugs. Soon after the introduction of coronary bypass surgery, many doctors enthusiastically adopted this approach in treating patients with unstable angina.
In 1972, emphasizing that there was no definitive evidence showing the superiority of intensive medical management or coronary bypass surgery in determining mortality and morbidity in patients hospitalized with unstable angina, some of the participating groups in the NHLBI Myocardial Infarction Research Units developed a cooperative clinical trial to compare these medical and surgical approaches to therapy.
From 1972 through 1976, 288 patients were entered into this randomized clinical trial. One hundred forty-seven patients received intensive pharmacological medical therapy, and 141 comparable patients underwent coronary artery bypass surgery. Careful follow-up studies were performed on patients in both groups, in-hospital and during the post-hospital phase. These studies included, apart from routine physical examinations, resting electrocardiograms, chest x-ray films, and grade exercise tolerance tests at six months and twelve months.
DESIGN NARRATIVE:
Randomized, non-blind, sequential design with a control group and an experimental group. The patients in the experimental group were treated with coronary bypass surgery. Patients in the control group received intensive medical management. Endpoints were mortality and morbidity measures, such as incidence of myocardial infarction and persistence of angina.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
Who may qualify
- Ages
- 21 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| coronary artery bypass | Procedure or surgery | – |
Primary outcome
Not reported in the source record.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 26 Nov 2013.
- Background: PubMed 1266755Unstable angina pectoris: national cooperative study group to compare medical and surgical therapy. I. Report of protocol and patient population. Am J Cardiol. 1976 May;37(6):896-902. doi: 10.1016/0002-9149(76)90116-8.
- Background: PubMed 6965816Unstable angina pectoris: national cooperative study group to compare surgical and medical therapy. III. Results in patients with S-T segment elevation during pain. Am J Cardiol. 1980 Apr;45(4):819-24. doi: 10.1016/0002-9149(80)90127-7. No abstract available.
- Background: PubMed 6965333Russell RO Jr, Wayne JB, Kronefeld J, Charles ED, Oberman A, Kouchoukos NT, White C, Rogers W, Mantle JA, Rackley CE. Surgical versus medical therapy for treatment of unstable angina: changes in work status and family income. Am J Cardiol. 1980 Jan;45(1):134-40. doi: 10.1016/0002-9149(80)90231-3. No abstract available.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Lewis Becker
Johns Hopkins University
Adolph Hutter
Massachusetts General Hospital
Leon Resnekov
University of Chicago
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing coronary artery bypass in people with Angina, Unstable and Cardiovascular Diseases, run by National Heart, Lung, and Blood Institute (NHLBI).
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 26 Nov 2013. 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.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
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 NCT00000486, which also lists 3 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 26 Nov 2013.