Subclinical COronary Atheroscleorosis Updated With Coronary cT Angiography (SCOUT Study)

NCT ID: NCT00431860

Last Updated: 2007-05-03

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Total Enrollment

3000 participants

Study Classification

OBSERVATIONAL

Study Start Date

2005-12-31

Study Completion Date

2011-11-30

Brief Summary

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The purpose of this study is to validate the usefulness of 64-slice multi-detecter computeted tomography as a screening tool in asymptomatic population.

Detailed Description

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A large proportion of patients with sudden cardiac death or nonfatal myocardial infarction (MI) had no prior symptom, which emphasizes the importance of early detection and treatment of the underlying subclinical coronary atherosclerosis before they happen. However, there are no powerful screening methods to detect subclinical coronary atherosclerosis until recently. Traditional CAD risk factors, treadmill exercise test, and EBCT are known to have limited power to detect subclinical coronary atherosclerosis and predict future cardiac events.

Coronary CT angiography (CTA) depicting detailed coronary artery anatomy in a noninvasive fashion would seem to be already one of the mainstays of diagnostic procedure in symptomatic population. Instead of the probability of significant stenosis, CTA could provide information about the location, burden and characteristics of atherosclerotic plaque per se, which might give additional insight to stratify the risk of future cardiac events and therapy.

In this study, we will evaluate the prevalence and characteristics of subclinical coronary atherosclerosis on CTA and its impact on the management in asymptomatic population. And then, we will develop standardized protocol for the management of subclinical coronary atherosclerosis, and follow for adverse cardiac events.

In phase I study, we will enroll subjects who had undergone CTA and analyze the characteristics of plaques on CTA. Also, we will evaluate the impact of CTA by comparing the performance of secondary test with those who had not undergone CTA evaluation.

In phase II study, we will recruit subjects who had significant coronary stenosis on CTA. If the patients had significant stenosis, they will undergo coronary angiography to confirm the severity of stenosis. If they had coronary artery stenosis more than 75%, they will receive percutaneous coronary intervention with drug-eluting stent (DES). If they had intermediate lesion, their treatment option will be judged by the results of fractional flow reserve test. If they had coronary lesion less than 50%, they will be treated only by medication.

When the patients are eligible for study, investigators will give information about the study and obtain written consent. The presence of chest pain symptom will be screened with Rose questionnaire. Medical history and physical examination will be performed, and baseline laboratory work-up will be performed.

Following above treatment guidelines, all patients will be followed for adverse cardiac events for 5 years.

Conditions

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Coronary Atherosclerosis

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

OTHER

Interventions

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Coronary computed tomographic angiography

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* asymptomatic subjects
* 20-75 years
* subjects who had undergone spiral coronary CT angiography for health check-up

Exclusion Criteria

* typical or atypical chest pain
* serious comorbid conditions(i.e. malignancy)
Minimum Eligible Age

20 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Seoul National University Bundang Hospital

OTHER

Sponsor Role lead

Principal Investigators

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Huk-Jae Chang, MD, PhD

Role: STUDY_DIRECTOR

Seoul National University Bundang Hospital

Locations

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Seoul National University Bundang hospital

Sungnam-si, Gyeonggi-do, South Korea

Site Status RECRUITING

Countries

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South Korea

Central Contacts

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Huk-Jae Chang, MD, PhD

Role: CONTACT

82-31-787-7024

Facility Contacts

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Huk-Jae Chang, MD, PhD

Role: primary

82-32-787-7024

References

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Choi EK, Choi SI, Rivera JJ, Nasir K, Chang SA, Chun EJ, Kim HK, Choi DJ, Blumenthal RS, Chang HJ. Coronary computed tomography angiography as a screening tool for the detection of occult coronary artery disease in asymptomatic individuals. J Am Coll Cardiol. 2008 Jul 29;52(5):357-65. doi: 10.1016/j.jacc.2008.02.086.

Reference Type DERIVED
PMID: 18652943 (View on PubMed)

Other Identifiers

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B-0606/034-019

Identifier Type: -

Identifier Source: org_study_id