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Clinical Trial Summary

This randomized, controlled, diagnostic, multicenter trial will compare two diagnostic imaging pathways--coronary computed tomography angiography (CCTA) and single photon emission tomography (SPECT) myocardial perfusion imaging (MPI)--to determine the incidence of major adverse coronary events (MACE), defined as myocardial infarction (MI) or cardiac-related death, and cross-over to revascularization. CCTA may be used to direct patients with symptoms of stable angina or angina equivalent to optimal medical therapy (OMT). The use of CCTA as a diagnostic tool for angina symptoms will be associated with no increase in MACE or revascularization, decreased cost, reduced risks (e.g., less radiation exposure), additional insights into alternate explanations of chest pain, and increased cost-effectiveness in comparison with use of SPECT MPI/invasive coronary angiography (ICA).


Clinical Trial Description

The Randomized Evaluation of Patients with Stable Angina Comparing Utilization of Diagnostic Examinations (RESCUE) is a multi-center randomized, controlled trial responding to the need for comparative analysis of these imaging technologies and the role of OMT in clinical care. A total of 4300 patients will be randomized to CCTA or SPECT MPI/ICA for diagnostic assessment of angina at up to 80 institutions internationally. This study builds on the results of the COURAGE trial by comparing CCTA and SPECT MPI/ICA integrated into a care paradigm featuring initial treatment with OMT for patients diagnosed using computer-aided diagnosis (CAD) without significant disease in the left main coronary artery. Participants will be followed for a composite endpoint of MACE and cross-over to revascularization over a follow-up period up to two years (two to six time points depending on diagnostic results and time of enrollment into the trial). The primary endpoint of the study is a combined endpoint of occurrence of MACE and revascularization. We will calculate differences in the combined MACE/revascularization endpoint between the CCTA and SPECT MPI/ICA arms. Participant outcomes will be assessed by age, gender, comorbidity, and angina classification class at presentation. Several comparative-effectiveness analyses will be performed. We hypothesize that the CCTA arm will be associated with no increase in MACE or revascularization, decreased cost, reduced risks (e.g., less radiation exposure), additional insights into or alternate explanations of chest pain, and increased cost-effectiveness in comparison with SPECT MPI/ICA. Findings are expected to result in validation of an evolving new standard of care for patients with stable angina that takes advantage of CCTA and OMT to more cost-effectively drive appropriate care while reducing the need for invasive diagnosis and increased radiation exposure with SPECT MPI/ICA. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT01262625
Study type Interventional
Source American College of Radiology
Contact
Status Terminated
Phase N/A
Start date May 20, 2011
Completion date February 2015

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