The Value of Myocardial Perfusion Single-Photon Emission Computed Tomography in Screening Asymptomatic Patients With Atrial Fibrillation for Coronary Artery Disease
J. Wells Askew, MD*,*,
Todd D. Miller, MD, FACC*,1,
David O. Hodge, MS and
Raymond J. Gibbons, MD, FACC*,2
* Division of Cardiovascular Diseases, Department of Internal Medicine, Mayo Clinic and Mayo Clinic College of Medicine, Rochester, Minnesota
Division of Biostatistics, Department of Health Sciences Research, Mayo Clinic and Mayo Clinic College of Medicine, Rochester, Minnesota.
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Figure 1 Summed Stress Score Results in Patients With and Without Atrial Fibrillation
Solid bars = atrial fibrillation patients; open bars = non-atrial fibrillation patients. *The p value for mean SSS between patients with and without atrial fibrillation (p = 0.35). SSS = summed stress score.
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Figure 3 Kaplan-Meier Survival Curves According to Summed Stress Score Risk Categories
Kaplan-Meier estimates for overall survival in atrial fibrillation (AF) patients (A) and non-AF patients (B) according to summed stress score (SSS) risk categories. Survival difference was statistically significant in both AF and non-AF patients (p < 0.001 by log rank statistic). Numbers below the graphs indicate numbers of patients available for analysis at given time points.
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Figure 4 Kaplan-Meier Survival Curves
Kaplan-Meier estimates for overall survival in atrial fibrillation (AF) and non-AF patients. Differences between survival curves were statistically significant (p < 0.001 by log rank statistic). Numbers below the graph indicate numbers of patients available for analysis at given time points.
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Figure 5 Relationship of Summed Stress Score and Mortality in the Presence of Atrial Fibrillation
Kaplan-Meier estimates for overall survival in atrial fibrillation (AF) and non-AF patients according to low-/intermediate-risk summed stress score (SSS) and high-risk SSS. Differences between the survival curves of the low-/intermediate-risk SSS AF and non-AF groups as well as between the high-risk SSS AF and non-AF groups were statistically significant (p < 0.001 by log rank statistic for the curves as shown). Numbers below the graph indicate numbers of patients available for analysis at given time points.
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