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• W2056582034 abstract "Patients with mildly abnormal or equivocal results on myocardial perfusion imaging (MPI) typically undergo diagnostic angiography or receive medical management for coronary artery disease. Catheterization is often required for either appropriate diagnosis or management. With its very high negative predictive rate, coronary computed tomographic angiography (CCTA) has great potential to rule out clinically significant coronary artery disease in this setting. The aim of this study was to analyze the clinical utility and cost implications of CCTA before invasive angiography in patients with abnormal or equivocal results on MPI. Consecutive patients referred by their physicians to our center with abnormal or equivocal results on MPI were reviewed. Patients with histories of myocardial infarction or of revascularization (coronary artery bypass grafting or percutaneous coronary intervention) were excluded. All patients underwent CCTA. Of 241 participants, only 66 (27%) of the studies with abnormal or equivocal nuclear findings revealed obstructive disease on CCTA (>50% stenosis). Fifty-five of 241 patients had normal coronary arteries, 97 patients had nonsignificant disease (<30%), and 23 patients had mild disease (30% to 50% stenosis) on CCTA, leading to diagnoses of noncardiac chest pain. Selective catheterization (for >50% stenosis on CCTA) demonstrated an average cost reduction of $1,295 per patient. Sensitivity analysis revealed cost savings to be preserved even if up to 70% of the patient cohort underwent catheterization after CCTA and across a wide range of procedural costs. In conclusion, CCTA after equivocal or mild or moderate abnormal MPI findings results in significant cost savings and a robust reduction in the need for cardiac catheterization and excludes obstructive coronary artery disease in almost 75% of patients. Patients with mildly abnormal or equivocal results on myocardial perfusion imaging (MPI) typically undergo diagnostic angiography or receive medical management for coronary artery disease. Catheterization is often required for either appropriate diagnosis or management. With its very high negative predictive rate, coronary computed tomographic angiography (CCTA) has great potential to rule out clinically significant coronary artery disease in this setting. The aim of this study was to analyze the clinical utility and cost implications of CCTA before invasive angiography in patients with abnormal or equivocal results on MPI. Consecutive patients referred by their physicians to our center with abnormal or equivocal results on MPI were reviewed. Patients with histories of myocardial infarction or of revascularization (coronary artery bypass grafting or percutaneous coronary intervention) were excluded. All patients underwent CCTA. Of 241 participants, only 66 (27%) of the studies with abnormal or equivocal nuclear findings revealed obstructive disease on CCTA (>50% stenosis). Fifty-five of 241 patients had normal coronary arteries, 97 patients had nonsignificant disease (<30%), and 23 patients had mild disease (30% to 50% stenosis) on CCTA, leading to diagnoses of noncardiac chest pain. Selective catheterization (for >50% stenosis on CCTA) demonstrated an average cost reduction of $1,295 per patient. Sensitivity analysis revealed cost savings to be preserved even if up to 70% of the patient cohort underwent catheterization after CCTA and across a wide range of procedural costs. In conclusion, CCTA after equivocal or mild or moderate abnormal MPI findings results in significant cost savings and a robust reduction in the need for cardiac catheterization and excludes obstructive coronary artery disease in almost 75% of patients." @default.
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• W2056582034 date "2012-01-01" @default.
• W2056582034 modified "2023-10-16" @default.
• W2056582034 title "Utility of Cardiac Computed Tomography Angiography to Exclude Clinically Significant Obstructive Coronary Artery Disease in Patients After Myocardial Perfusion Imaging" @default.
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• W2056582034 doi "https://doi.org/10.1016/j.amjcard.2011.08.022" @default.
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