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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01174550
Other study ID # Pro00019865
Secondary ID R01HL098237-01
Status Completed
Phase N/A
First received August 2, 2010
Last updated February 2, 2016
Start date July 2010
Est. completion date October 2014

Study information

Verified date January 2016
Source Duke University
Contact n/a
Is FDA regulated No
Health authority United States: Federal GovernmentUnited States: Institutional Review Board
Study type Interventional

Clinical Trial Summary

A prospective multicenter imaging study for evaluation of chest pain. Objective is to determine whether an initial non-invasive anatomic imaging strategy with coronary CT angiography (CTA) will improve clinical outcomes in subjects with symptoms concerning for coronary artery disease relative to an initial functional testing strategy (usual care). Study hypothesis: initial anatomic testing strategy will provide information that will result in superior long-term health outcomes as compared to an initial functional testing strategy.


Description:

Pragmatic randomized trial of clinical effectiveness of diagnostic testing strategies for coronary artery disease (CAD), to be performed in outpatient settings including acute and primary care and cardiology offices. Qualifying patients presenting with new or worsening symptoms suspicious for clinically significant CAD who require diagnostic testing and have not been previously evaluated will be randomized to an initial strategy of either anatomic or functional testing. All subsequent decisions regarding additional testing, medications and/or procedures will be at the discretion of the responsible clinical care team Within the functional testing arm, the subject's care team will select the specific test to be performed (exercise electrocardiogram (ECG), stress nuclear, or stress echocardiogram (echo)) consistent with 'usual care' in that practice setting. The subject's care team will be provided with 'Information sheets' summarizing current standards for test interpretation and preventive care, but specific medical treatment will not be mandated by the trial.


Recruitment information / eligibility

Status Completed
Enrollment 10003
Est. completion date October 2014
Est. primary completion date October 2014
Accepts healthy volunteers No
Gender Both
Age group 45 Years and older
Eligibility Inclusion Criteria:

- new or worsening chest pain suspicious for clinically significant coronary artery disease (CAD)

- no prior evaluation for this episode of symptoms

- planned non-invasive testing for diagnosis

- men age =55 years

- men age =45 years with increased probability of coronary artery disease (CAD) due to either (A. Diabetes Mellitus (DM) requiring medical treatment OR Peripheral Arterial Disease (PAD) defined as documented >50% peripheral arterial stenosis treated medically or invasively OR cerebrovascular disease (stroke, documented > 50% carotid stenosis treated medically or invasively) OR B. At least one of the following cardiovascular risk factors: 1-Ongoing tobacco use, 2-Hypertension, 3-Abnormal ankle brachial index (ABI) defined as less than <0.9, 4-Dyslipidemia

- women age =65 years

- women age =50 years with increased probability of coronary artery disease (CAD) due to either (A. Diabetes Mellitus (DM) requiring medical treatment OR Peripheral Arterial Disease (PAD) defined as documented >50% peripheral arterial stenosis treated medically or invasively OR cerebrovascular disease (stroke, documented > 50% carotid stenosis treated medically or invasively) OR B. At least one of the following cardiovascular risk factors: 1-Ongoing tobacco use, 2-Hypertension, 3-Abnormal ankle brachial index (ABI) defined as less than <0.9, 4-Dyslipidemia

- Serum creatinine = 1.5 mg/dL within the past 90 days

- Negative urine/serum pregnancy test for female subjects of child-bearing potential

Exclusion Criteria:

- Diagnosed or suspected acute coronary syndrome (ACS) requiring hospitalization or urgent or emergent testing; Elevated troponin or creatine kinase-myocardial band (CK-MB)

- Hemodynamically or clinically unstable condition systolic blood pressure (BP) < 90 mmHg, atrial or ventricular arrhythmias, or persistent resting chest pain felt to be ischemic despite adequate therapy)

- Known coronary artery disease (CAD) with prior Myocardial infarction (MI), percutaneous coronary intervention (PCI), coronary artery bypass graft (CABG) or any angiographic evidence of coronary artery disease (CAD) =50% lesion in a major epicardial vessel

- Any invasive coronary angiography or non-invasive anatomic or functional cardiovascular (CV) test for detection of coronary artery disease (CAD), including coronary tomographic angiography (CTA) and exercise electrocardiogram (ECG), within the previous twelve (12) months

- Known significant congenital, valvular (> moderate) or cardiomyopathic process (hypertrophic cardiomyopathy or reduced systolic left ventricular function (LVEF) = 40%)) which could explain cardiac symptoms

- Contraindication to undergoing a coronary tomographic angiography (CTA), including but not limited to: a. Allergy to iodinated contrast agent, b. Unable to receive beta blockers unless heart rate < 65 beats per minute, c. Pregnancy

- Life expectancy < 2 years

- Unable to provide written informed consent or participate in long-term follow-up

Study Design

Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Diagnostic


Related Conditions & MeSH terms


Intervention

Procedure:
Coronary Angiography
Use of standard equipment for usual-care testing
Stress Echocardiogram
Use of standard equipment for usual-care testing
Nuclear Stress Test
Use of standard equipment for usual-care testing
Exercise Electrocardiogram
Use of standard equipment for usual-care testing

Locations

Country Name City State
United States Duke University Medical Center Durham North Carolina

Sponsors (2)

Lead Sponsor Collaborator
Duke University National Heart, Lung, and Blood Institute (NHLBI)

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Time to Primary Endpoint Time to primary endpoint as defined as a composite of death, myocardial infarction (MI), major complications from cardiovascular (CV) procedures or testing, and unstable angina hospitalization. The Kaplan-Meier events rates (cumulative percentage of participants with an event) were estimated for the anatomic and functional diagnostic test groups. 90 days, 6 months, 12 months, 18 months, 24 months, 30 months, 36 months, 42 months No
Secondary Time to Death, Myocardial Infarction (MI), Unstable Angina Hospitalization Time to this secondary endpoint as defined as a composite of death, myocardial infarction (MI), and unstable angina hospitalization. The Kaplan-Meier events rates (cumulative percentage of participants with an event) were estimated for the anatomic and functional diagnostic test groups. 90 days, 6 months, 12 months, 18 months, 24 months, 30 months, 36 months, 42 months No
Secondary Time to Death or Myocardial Infarction (MI) Time to this secondary endpoint as defined as a composite of death and myocardial infarction (MI). The Kaplan-Meier events rates (cumulative percentage of participants with an event) were estimated for the anatomic and functional diagnostic test groups. 90 days, 6 months, 12 months, 18 months, 24 months, 30 months, 36 months, 42 months No
Secondary Time to Major Complications From Cardiovascular (CV) Procedures Time to this secondary endpoint as defined as a composite of major complications from cardiovascular procedures and testing (stroke, bleeding, anaphylaxis, renal failure). The Kaplan-Meier events rates (cumulative percentage of participants with an event) were estimated for the anatomic and functional diagnostic test groups. 90 days, 6 months, 12 months, 18 months, 24 months, 30 months, 36 months, 42 months No
Secondary Time to Death, Myocardial Infarction (MI), Unstable Angina (UA), Complications, No Coronary Artery Disease (CAD) Time to primary endpoint as defined as a composite of death, myocardial infarction (MI), major complications from cardiovascular (CV) procedures or testing, unstable angina hospitalization, and no coronary artery disease (CAD). The Kaplan-Meier events rates (cumulative percentage of participants with an event) were estimated for the anatomic and functional diagnostic test groups. 90 days, 6 months, 12 months, 18 months, 24 months, 30 months, 36 months, 42 months No
Secondary Percentage of Invasive Cardiac Catheterization Events Without Obstructive Coronary Artery Disease Within 90 Days Following Participant Randomization Percentage of Invasive Cardiac Catheterization Events Without Obstructive Coronary Artery Disease (CAD)Within 90 Days Following Participant Randomization Up to 90 days following participant randomization No
Secondary Medical Cost Assess and compare total medical cost for the two diagnostic testing arms by intention to treat at both 90 days and 3 years cumulative. 90 days and 3 years cumulative No
Secondary Quality of Life (QOL) as Measured by Duke Activity Status Index Participant score in Quality of Life as measured by Duke Activity Status Index (DASI). DASI measures a person's functional capacity based on a 12-item questionnaire that correlates with peak O2 uptake during exercise testing. The DASI is a self-administered questionnaire that measures a patient's functional capacity. It can be used to get a rough estimate of a patient's peak oxygen uptake. The maximum score for the DASI is 58.2 (better functional ability/capacity) and the minimum score is 0 (worse functional ability/capacity). Baseline, 6 months, 12 months 24 months No
Secondary Quality of Life (QOL) as Measured by Seattle Angina Scale Anginal Frequency Subscale Participant score Quality of Life measured by Seattle Angina Scale Anginal Frequency Subscale utilizing the Seattle Angina Questionnaire (SAQ). SAQ: 19-item, 5-6-point Likert, questionnaire measuring 5 dimensions of coronary artery disease: Anginal Stability: whether symptoms are changing. Anginal Frequency: how often patient having symptoms Physical Limitation: how much condition hampers ability to do what he wants.Treatment Satisfaction: how well patient understands care. Disease Perception: impact of condition on interpersonal relationships. Each dimension assigns response an value, beginning with 1 for response at the lowest level of functioning & summing across items within each of the 5 scales. Scale scores transformed to 0-100 range by subtracting the lowest scale. Higher score suggest symptoms more stable & less frequent, condition has less impact on activities, increased satisfaction with treatment, & perception of disease has less impact on interpersonal relationships. Baseline, 6 month, 12 month, 24 month No
Secondary Quality of Life (QOL) as Measured by Seattle Anginal Quality of Life Subscale Participant score Quality of Life measured by Seattle Angina Scale Anginal Frequency Subscale utilizing the Seattle Angina Questionnaire (SAQ). SAQ: 19-item, 5-6-point Likert, questionnaire measuring 5 dimensions of coronary artery disease: Anginal Stability: whether symptoms are changing. Anginal Frequency: how often patient having symptoms Physical Limitation: how much condition hampers ability to do what he wants.Treatment Satisfaction: how well patient understands care. Disease Perception: impact of condition on interpersonal relationships. Each dimension assigns response an value, beginning with 1 for response at the lowest level of functioning & summing across items within each of the 5 scales. Scale scores transformed to 0-100 range by subtracting the lowest scale. Higher score suggest symptoms more stable & less frequent, condition has less impact on activities, increased satisfaction with treatment, & perception of disease has less impact on interpersonal relationships. Baseline, 6 months, 12 months, 24 months No
Secondary Quality of Life (QOL) as Measured by Complete Resolution of Symptoms That Led to the Initial Testing Percentage of participants with improvement in Quality of Life as measured by complete resolution of the symptoms that led to initial testing 6 month, 12 month 24 month No
Secondary Cumulative Radiation Exposure Within 90 Days Cumulative radiation exposure from all cardiovascular diagnostic tests and procedures performed within 90 days after randomization. 90 days No
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